6 assignment operators in java

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Operators are used to perform operations on variables and values.

In the example below, we use the + operator to add together two values:

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Although the + operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:

Java divides the operators into the following groups:

• Arithmetic operators
• Assignment operators
• Comparison operators
• Logical operators
• Bitwise operators

Arithmetic Operators

Arithmetic operators are used to perform common mathematical operations.

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Java Assignment Operators

Assignment operators are used to assign values to variables.

In the example below, we use the assignment operator ( = ) to assign the value 10 to a variable called x :

The addition assignment operator ( += ) adds a value to a variable:

A list of all assignment operators:

Java Comparison Operators

Comparison operators are used to compare two values (or variables). This is important in programming, because it helps us to find answers and make decisions.

The return value of a comparison is either true or false . These values are known as Boolean values , and you will learn more about them in the Booleans and If..Else chapter.

In the following example, we use the greater than operator ( > ) to find out if 5 is greater than 3:

Java Logical Operators

You can also test for true or false values with logical operators.

Logical operators are used to determine the logic between variables or values:

Java Bitwise Operators

Bitwise operators are used to perform binary logic with the bits of an integer or long integer.

Note: The Bitwise examples above use 4-bit unsigned examples, but Java uses 32-bit signed integers and 64-bit signed long integers. Because of this, in Java, ~5 will not return 10. It will return -6. ~00000000000000000000000000000101 will return 11111111111111111111111111111010

In Java, 9 >> 1 will not return 12. It will return 4. 00000000000000000000000000001001 >> 1 will return 00000000000000000000000000000100

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Multiply 10 with 5 , and print the result.

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Operators are symbols that perform operations on variables and values. For example, + is an operator used for addition, while * is also an operator used for multiplication.

Operators in Java can be classified into 5 types:

• Arithmetic Operators
• Assignment Operators
• Relational Operators
• Logical Operators
• Unary Operators
• Bitwise Operators

1. Java Arithmetic Operators

Arithmetic operators are used to perform arithmetic operations on variables and data. For example,

Here, the + operator is used to add two variables a and b . Similarly, there are various other arithmetic operators in Java.

Example 1: Arithmetic Operators

In the above example, we have used + , - , and * operators to compute addition, subtraction, and multiplication operations.

/ Division Operator

Note the operation, a / b in our program. The / operator is the division operator.

If we use the division operator with two integers, then the resulting quotient will also be an integer. And, if one of the operands is a floating-point number, we will get the result will also be in floating-point.

% Modulo Operator

The modulo operator % computes the remainder. When a = 7 is divided by b = 4 , the remainder is 3 .

Note : The % operator is mainly used with integers.

2. Java Assignment Operators

Assignment operators are used in Java to assign values to variables. For example,

Here, = is the assignment operator. It assigns the value on its right to the variable on its left. That is, 5 is assigned to the variable age .

Let's see some more assignment operators available in Java.

Example 2: Assignment Operators

3. java relational operators.

Relational operators are used to check the relationship between two operands. For example,

Here, < operator is the relational operator. It checks if a is less than b or not.

It returns either true or false .

Example 3: Relational Operators

Note : Relational operators are used in decision making and loops.

4. Java Logical Operators

Logical operators are used to check whether an expression is true or false . They are used in decision making.

Example 4: Logical Operators

Working of Program

• (5 > 3) && (8 > 5) returns true because both (5 > 3) and (8 > 5) are true .
• (5 > 3) && (8 < 5) returns false because the expression (8 < 5) is false .
• (5 < 3) || (8 > 5) returns true because the expression (8 > 5) is true .
• (5 > 3) || (8 < 5) returns true because the expression (5 > 3) is true .
• (5 < 3) || (8 < 5) returns false because both (5 < 3) and (8 < 5) are false .
• !(5 == 3) returns true because 5 == 3 is false .
• !(5 > 3) returns false because 5 > 3 is true .

5. Java Unary Operators

Unary operators are used with only one operand. For example, ++ is a unary operator that increases the value of a variable by 1 . That is, ++5 will return 6 .

Different types of unary operators are:

• Increment and Decrement Operators

Java also provides increment and decrement operators: ++ and -- respectively. ++ increases the value of the operand by 1 , while -- decrease it by 1 . For example,

Here, the value of num gets increased to 6 from its initial value of 5 .

Example 5: Increment and Decrement Operators

In the above program, we have used the ++ and -- operator as prefixes (++a, --b) . We can also use these operators as postfix (a++, b++) .

There is a slight difference when these operators are used as prefix versus when they are used as a postfix.

To learn more about these operators, visit increment and decrement operators .

6. Java Bitwise Operators

Bitwise operators in Java are used to perform operations on individual bits. For example,

Here, ~ is a bitwise operator. It inverts the value of each bit ( 0 to 1 and 1 to 0 ).

The various bitwise operators present in Java are:

These operators are not generally used in Java. To learn more, visit Java Bitwise and Bit Shift Operators .

Other operators

Besides these operators, there are other additional operators in Java.

The instanceof operator checks whether an object is an instanceof a particular class. For example,

Here, str is an instance of the String class. Hence, the instanceof operator returns true . To learn more, visit Java instanceof .

The ternary operator (conditional operator) is shorthand for the if-then-else statement. For example,

Here's how it works.

• If the Expression is true , expression1 is assigned to the variable .
• If the Expression is false , expression2 is assigned to the variable .

Let's see an example of a ternary operator.

In the above example, we have used the ternary operator to check if the year is a leap year or not. To learn more, visit the Java ternary operator .

Now that you know about Java operators, it's time to know about the order in which operators are evaluated. To learn more, visit Java Operator Precedence .

Table of Contents

• Introduction
• Java Arithmetic Operators
• Java Assignment Operators
• Java Relational Operators
• Java Logical Operators
• Java Unary Operators
• Java Bitwise Operators

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The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases. See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

Now that you've learned how to declare and initialize variables, you probably want to know how to do something with them. Learning the operators of the Java programming language is a good place to start. Operators are special symbols that perform specific operations on one, two, or three operands , and then return a result.

As we explore the operators of the Java programming language, it may be helpful for you to know ahead of time which operators have the highest precedence. The operators in the following table are listed according to precedence order. The closer to the top of the table an operator appears, the higher its precedence. Operators with higher precedence are evaluated before operators with relatively lower precedence. Operators on the same line have equal precedence. When operators of equal precedence appear in the same expression, a rule must govern which is evaluated first. All binary operators except for the assignment operators are evaluated from left to right; assignment operators are evaluated right to left.

In general-purpose programming, certain operators tend to appear more frequently than others; for example, the assignment operator " = " is far more common than the unsigned right shift operator " >>> ". With that in mind, the following discussion focuses first on the operators that you're most likely to use on a regular basis, and ends focusing on those that are less common. Each discussion is accompanied by sample code that you can compile and run. Studying its output will help reinforce what you've just learned.

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Java Assignment Operators

Java programming tutorial index.

The Java Assignment Operators are used when you want to assign a value to the expression. The assignment operator denoted by the single equal sign = .

In a Java assignment statement, any expression can be on the right side and the left side must be a variable name. For example, this does not mean that "a" is equal to "b", instead, it means assigning the value of 'b' to 'a'. It is as follows:

Java also has the facility of chain assignment operators, where we can specify a single value for multiple variables.

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Java Assignment Operators

Java Assignment Operators are used to optionally perform an action with given operands and assign the result back to given variable (left operand).

The syntax of any Assignment Operator with operands is

In this tutorial, we will learn about different Assignment Operators available in Java programming language and go through each of these Assignment Operations in detail, with the help of examples.

Operator Symbol – Example – Description

The following table specifies symbol, example, and description for each of the Assignment Operator in Java.

Simple Assignment

In the following example, we assign a value of 2 to x using Simple Assignment Operator.

Addition Assignment

In the following example, we add 3 to x and assign the result to x using Addition Assignment Operator.

Subtraction Assignment

In the following example, we subtract 3 from x and assign the result to x using Subtraction Assignment Operator.

Multiplication Assignment

In the following example, we multiply 3 to x and assign the result to x using Multiplication Assignment Operator.

Division Assignment

In the following example, we divide x by 3 and assign the quotient to x using Division Assignment Operator.

Remainder Assignment

In the following example, we divide x by 3 and assign the remainder to x using Remainder Assignment Operator.

Bitwise AND Assignment

In the following example, we do bitwise AND operation between x and 3 and assign the result to x using Bitwise AND Assignment Operator.

Bitwise OR Assignment

In the following example, we do bitwise OR operation between x and 3 and assign the result to x using Bitwise OR Assignment Operator.

Bitwise XOR Assignment

In the following example, we do bitwise XOR operation between x and 3 and assign the result to x using Bitwise XOR Assignment Operator.

Left-shift Assignment

In the following example, we left-shift x by 3 places and assign the result to x using Left-shift Assignment Operator.

Right-shift Assignment

In the following example, we right-shift x by 3 places and assign the result to x using Right-shift Assignment Operator.

In this Java Tutorial , we learned what Assignment Operators are, and how to use them in Java programs, with the help of examples.

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1. Overview

Operators are a fundamental building block of any programming language. We use operators to perform operations on values and variables.

Java provides many groups of operators. They are categorized by their functionalities.

In this tutorial, we’ll walk through all Java operators to understand their functionalities and how to use them.

2. Arithmetic Operators

We use arithmetic operators to perform simple mathematical operations. We should note that arithmetic operators only work with primitive number types and their boxed types , such as int and  Integer .

Next, let’s see what operators we have in the arithmetic operator group.

2.1. The Addition Operator

The addition operator (+) allows us to add two values or concatenate two strings:

2.2. The Subtraction Operator

Usually, we use the subtraction operator (-) to subtract one value from another:

2.3. The Multiplication Operator

The multiplication operator (*) is used to multiply two values or variables:

2.4. The Division Operator

The division operator (/) allows us to divide the left-hand value by the right-hand one:

When we use the division operator on two integer values ( byte , short , int , and long ), we should note that the result is the quotient value. The remainder is not included .

As the example above shows, if we calculate 15 / 2 , the quotient is 7, and the remainder is 1 . Therefore, we have 15 / 2 = 7 .

2.5. The Modulo Operator

We can get the quotient using the division operator. However, if we just want to get the remainder of a division calculation, we can use the modulo operator (%):

3. Unary Operators

As the name implies, unary operators only require one single operand . For example, we usually use unary operators to increment, decrement, or negate a variable or value.

Now, let’s see the details of unary operators in Java.

3.1. The Unary Plus Operator

The unary plus operator (+) indicates a positive value. If the number is positive, we can omit the ‘+’ operator:

3.2. The Unary Minus Operator

Opposite to the unary plus operator, the unary minus operator (-) negates a value or an expression:

3.3. The Logical Complement Operator

The logical complement operator (!) is also known as the “NOT” operator . We can use it to invert the value of a boolean variable or value:

3.4. The Increment Operator

The increment operator (++) allows us to increase the value of a variable by 1:

3.5. The Decrement Opeartor

The decrement operator (–) does the opposite of the increment operator. It decreases the value of a variable by 1:

We should keep in mind that the increment and decrement operators can only be used on a variable . For example, “ int a = 5; a++; ” is fine. However, the expression “ 5++ ” won’t be compiled.

4. Relational Operators

Relational operators can be called “comparison operators” as well. Basically, we use these operators to compare two values or variables.

4.1. The “Equal To” Operator

We use the “equal to” operator (==) to compare the values on both sides. If they’re equal, the operation returns true :

The “equal to” operator is pretty straightforward. On the other hand, the Object class has provided the equals() method. As the Object class is the superclass of all Java classes, all Java objects can use the equals() method to compare each other.

When we want to compare two objects – for instance, when we compare Long objects or compare String s –  we should choose between the comparison method from the equals() method and that of the “equal to” operator wisely .

4.2. The “Not Equal To” Operator

The “not equal to” operator (!=) does the opposite of the ‘==’ operator. If the values on both sides are not equal, the operation returns true :

4.3. The “Greater Than” Operator

When we compare two values with the “greater than” operator (>), it returns true if the value on the left-hand side is greater than the value on the right-hand side:

4.4. The “Greater Than or Equal To” Operator

The “greater than or equal to” operator (>=) compares the values on both sides and returns true if the left-hand side operand is greater than or equal to the right-hand side operand:

4.5. The “Less Than” Operator

The “less than” operator (<) compares two values on both sides and returns true if the value on the left-hand side is less than the value on the right-hand side:

4.6. The “Less Than or Equal To” Operator

Similarly, the “less than or equal to” operator (<=) compares the values on both sides and returns true if the left-hand side operand is less than or equal to the right-hand side:

5. Logical Operators

We have two logical operators in Java: the logical AND and OR operators. Basically, their function is pretty similar to the AND gate and the OR gate in digital electronics.

Usually, we use a logical operator with two operands, which are variables or expressions that can be evaluated as boolean .

Next, let’s take a closer look at them.

5.1. The Logical AND Operator

The logical AND operator ( && ) returns true only if both operands are true :

5.2. The Logical OR Operator

Unlike the ‘ && ‘ operator, the logical OR operator ( || ) returns true if at least one operand is  true :

We should note that the logical OR operator has the short-circuiting effect : It returns true as soon as one of the operands is evaluated as true, without evaluating the remaining operands.

6. Ternary Operator

A ternary operator is a short form of the if-then-else statement. It has the name ternary as it has three operands. First, let’s have a look at the standard if-then-else statement syntax:

We can convert the above if-then-else statement into a compact version using the ternary operator:

Let’s look at its syntax:

Next, let’s understand how the ternary operator works through a simple example:

7. Bitwise and Bit Shift Operators

As the article “ Java bitwise operators ” covers the details of bitwise and bit shift operators, we’ll briefly summarize these operators in this tutorial.

7.1. The Bitwise AND Operator

The bitwise AND operator (&) returns the bit-by-bit AND of input values:

7.2. The Bitwise OR Operator

The bitwise OR operator (|) returns the bit-by-bit OR of input values:

7.3. The Bitwise XOR Operator

The bitwise XOR (exclusive OR) operator (^) returns the bit-by-bit XOR of input values:

7.4. The Bitwise Complement Operator

The bitwise complement operator (~) is a unary operator. It returns the value’s complement representation, which inverts all bits from the input value:

7.5. The Left Shift Operator

Shift operators shift the bits to the left or right by the given number of times.

The left shift operator (<<) shifts the bits to the left by the number of times defined by the right-hand side operand. After the left shift, the empty space in the right is filled with 0.

Next, let’s left shift the number 12 twice:

n << x has the same effect of multiplying the number  n  with x power of two.

7.6. The Signed Right Shift Operator

The signed right shift operator (>>) shifts the bits to the right by the number of times defined by the right-hand side operand and fills 0 on voids left as a result.

We should note that the leftmost position after the shifting depends on the sign extension .

Next, let’s do “signed right shift” twice on the numbers 12 and -12 to see the difference:

As the second example above shows, if the number is negative, the leftmost position after each shift will be set by the sign extension.

n >> x has the same effect of dividing the number n by x power of two.

7.7. The Unsigned Right Shift Operator

The unsigned right shift operator (>>>) works in a similar way as the ‘>>’ operator. The only difference is that after a shift, the leftmost bit is set to 0 .

Next, let’s unsigned right shift twice on the numbers 12 and -12 to see the difference:

As we can see in the second example above, the >>> operator fills voids on the left with 0 irrespective of whether the number is positive or negative .

8. The “ instanceof ” Operator

Sometimes, when we have an object, we would like to test if it’s an instance of a given type . The “ instanceof ” operator can help us to do it:

9. Assignment Operators

We use assignment operators to assign values to variables. Next, let’s see which assignment operators we can use in Java.

9.1. The Simple Assignment Operator

The simple assignment operator (=) is a straightforward but important operator in Java. Actually, we’ve used it many times in previous examples. It assigns the value on its right to the operand on its left:

9.2. Compound Assignments

We’ve learned arithmetic operators. We can combine the arithmetic operators with the simple assignment operator to create compound assignments.

For example, we can write “ a = a + 5 ” in a compound way: “ a += 5 “.

Finally, let’s walk through all supported compound assignments in Java through examples:

10. Conclusion

Java provides many groups of operators for different functionalities. In this article, we’ve passed through the operators in Java.

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Java Assignment Operators

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Assignment Operator in Java with Example

Assignment operator is one of the simplest and most used operator in java programming language. As the name itself suggests, the assignment operator is used to assign value inside a variable. In java we can divide assignment operator in two types :

• Assignment operator or simple assignment operator
• Compound assignment operators

What is assignment operator in java

The = operator in java is known as assignment or simple assignment operator. It assigns the value on its right side to the operand(variable) on its left side. For example :

The left-hand side of an assignment operator must be a variable while the right side of it should be a value which can be in the form of a constant value, a variable name, an expression, a method call returning a compatible value or a combination of these.

The value at right side of assignment operator must be compatible with the data type of left side variable, otherwise compiler will throw compilation error. Following are incorrect assignment :

Another important thing about assignment operator is that, it is evaluated from right to left . If there is an expression at right side of assignment operator, it is evaluated first then the resulted value is assigned in left side variable.

Here in statement int x = a + b + c; the expression a + b + c is evaluated first, then the resulted value( 60 ) is assigned into x . Similarly in statement a = b = c , first the value of c which is 30 is assigned into b and then the value of b which is now 30 is assigned into a .

The variable at left side of an assignment operator can also be a non-primitive variable. For example if we have a class MyFirstProgram , we can assign object of MyFirstProgram class using = operator in MyFirstProgram type variable.

Is == an assignment operator ?

No , it's not an assignment operator, it's a relational operator used to compare two values.

Is assignment operator a binary operator

Yes , as it requires two operands.

Assignment operator program in Java

a = 2 b = 2 c = 4 d = 4 e = false

Java compound assignment operators

The assignment operator can be mixed or compound with other operators like addition, subtraction, multiplication etc. We call such assignment operators as compound assignment operator. For example :

Here the statement a += 10; is the short version of a = a + 10; the operator += is basically addition compound assignment operator. Similarly b *= 5; is short version of b = b * 5; the operator *= is multiplication compound assignment operator. The compound assignment can be in more complex form as well, like below :

List of all assignment operators in Java

The table below shows the list of all possible assignment(simple and compound) operators in java. Consider a is an integer variable for this table.

How many assignment operators are there in Java ?

Including simple and compound assignment we have total 12 assignment operators in java as given in above table.

What is shorthand operator in Java ?

Shorthand operators are nothing new they are just a shorter way to write something that is already available in java language. For example the code a += 5 is shorter way to write a = a + 5 , so += is a shorthand operator. In java all the compound assignment operator(given above) and the increment/decrement operators are basically shorthand operators.

Compound assignment operator program in Java

a = 20 b = 80 c = 30 s = 64 s2 = 110 b2 = 15

What is the difference between += and =+ in Java?

An expression a += 1 will result as a = a + 1 while the expression a =+ 1 will result as a = +1 . The correct compound statement is += , not =+ , so do not use the later one.

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In , assignment is used to assign values to a variable. In this section, we will discuss the . The is the combination of more than one operator. It includes an assignment operator and arithmetic operator or bitwise operator. The specified operation is performed between the right operand and the left operand and the resultant assigned to the left operand. Generally, these operators are used to assign results in shorter syntax forms. In short, the compound assignment operator can be used in place of an assignment operator. For example: Let's write the above statements using the compound assignment operator. Using both assignment operators generates the same result. Java supports the following assignment operators: Catagories Operator Description Example Equivalent Expression It assigns the result of the addition. count += 1 count = count + 1 It assigns the result of the subtraction. count -= 2 count = count - 2 It assigns the result of the multiplication. price *= quantity price = price * quantity It assigns the result of the division. average /= number_of_terms average = number_of_terms It assigns the result of the remainder of the division. s %= 1000 s = s % 1000 It assigns the result of the signed left bit shift. res <<= num res = res << num It assigns the result of the signed right bit shift. y >>= 1 y = y >> 1 It assigns the result of the logical AND. x &= 2 x = x & 2 It assigns the result of the logical XOR. a ^= b a = a ^ b It assigns the result of the logical OR. flag |= true flag = flag | true It assigns the result of the unsigned right bit shift. p >>>= 4 p = p >>> 4 Using Compound Assignment Operator in a Java Program CompoundAssignmentOperator.java Send your Feedback to [email protected] Help Others, Please Share Learn Latest Tutorials Transact-SQL Reinforcement Learning R Programming React Native Python Design Patterns Python Pillow Python Turtle Preparation Verbal Ability Interview Questions Company Questions Trending Technologies Artificial Intelligence Cloud Computing Data Science Machine Learning B.Tech / MCA Data Structures Operating System Computer Network Compiler Design Computer Organization Discrete Mathematics Ethical Hacking Computer Graphics Software Engineering Web Technology Cyber Security C Programming Control System Data Mining Data Warehouse Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand OverflowAI GenAI features for Teams OverflowAPI Train & fine-tune LLMs Labs The future of collective knowledge sharing About the company Visit the blog Collectives™ on Stack Overflow Find centralized, trusted content and collaborate around the technologies you use most. Q&A for work Connect and share knowledge within a single location that is structured and easy to search. Get early access and see previews of new features. Shortcut "or-assignment" (|=) operator in Java I have a long set of comparisons to do in Java, and I'd like to know if one or more of them come out as true. The string of comparisons was long and difficult to read, so I broke it up for readability, and automatically went to use a shortcut operator |= rather than negativeValue = negativeValue || boolean . I expect negativeValue to be true if any of the default<something> values are negative. Is this valid? Will it do what I expect? I couldn't see it mentioned on Sun's site or stackoverflow, but Eclipse doesn't seem to have a problem with it and the code compiles and runs. Similarly, if I wanted to perform several logical intersections, could I use &= instead of && ? assignment-operator compound-assignment or-operator 13 Why don't you try it? –  Roman Commented Mar 21, 2010 at 9:09 This is general boolean logic, not Java only. so you can look it up on other places. And why don't you just try it? –  Dykam Commented Mar 21, 2010 at 9:10 16 @Dykam: No, there's specific behaviour here. Java could choose to make |= short-circuiting, such that it won't evaluate the RHS if the LHS is already true - but it doesn't. –  Jon Skeet Commented Mar 21, 2010 at 9:14 3 @Jon Skeet: Short-circuiting would be appropriate for the non-existent ||= operator, but |= is the combination form of the bitwise or operator. –  David Thornley Commented Mar 22, 2010 at 14:07 1 @Jon Skeet: Sure, but making |= short-circuiting would be inconsistent with other compound assignment operators, since a |= b; would not be the same as a = a | b; , with the usual caveat about evaluating a twice (if it matters). It looks to me like the big language behavior decision was not having ||= , so I'm missing your point. –  David Thornley Commented Mar 22, 2010 at 14:59 8 Answers 8 The |= is a compound assignment operator ( JLS 15.26.2 ) for the boolean logical operator | ( JLS 15.22.2 ); not to be confused with the conditional-or || ( JLS 15.24 ). There are also &= and ^= corresponding to the compound assignment version of the boolean logical & and ^ respectively. In other words, for boolean b1, b2 , these two are equivalent: The difference between the logical operators ( & and | ) compared to their conditional counterparts ( && and || ) is that the former do not "shortcircuit"; the latter do. That is: & and | always evaluate both operands (because no matter what the right operand evaluates to, the entire expression is false ) (because no matter what the right operand evaluates to, the entire expression is true ) So going back to your original question, yes, that construct is valid, and while |= is not exactly an equivalent shortcut for = and || , it does compute what you want. Since the right hand side of the |= operator in your usage is a simple integer comparison operation, the fact that | does not shortcircuit is insignificant. There are cases, when shortcircuiting is desired, or even required, but your scenario is not one of them. It is unfortunate that unlike some other languages, Java does not have &&= and ||= . This was discussed in the question Why doesn't Java have compound assignment versions of the conditional-and and conditional-or operators? (&&=, ||=) . +1, very thorough. it seems plausible that a compiler might well convert to a short-circuit operator, if it could determine that the RHS has no side effects. any clue about that? –  Carl Commented Mar 22, 2010 at 14:23 I read that when RHS is trivial and SC is not necessary, the "smart" SC operators are actually a bit slower. If true, then it's more interesting to wonder if some compilers can convert SC to NSC under certain circumstances. –  polygenelubricants Commented Mar 22, 2010 at 15:08 @polygenelubricants short-circuited operators involve a branch of some sort under the hood, so if there's no branch-prediction-friendly pattern to the truth values used with the operators and/or the architecture in use does not have good/any branch prediction (and assuming the compiler and/or virtual machine don't do any related optimizations themselves), then yes, SC operators will introduce some slowness compared to non-short-circuiting. The best way to find out of the compiler does anything would be to compile a program using SC vs. NSC and then compare the bytecode to see if it differs. –  JAB Commented Jun 18, 2014 at 19:16 Also, not to be confused with the bitwise OR operator which is also | –  user20574 Commented Jan 27, 2015 at 9:16 It's not a "shortcut" (or short-circuiting) operator in the way that || and && are (in that they won't evaluate the RHS if they already know the result based on the LHS) but it will do what you want in terms of working . As an example of the difference, this code will be fine if text is null: whereas this won't: (Obviously you could do "".equals(text) for that particular case - I'm just trying to demonstrate the principle.) You could just have one statement. Expressed over multiple lines it reads almost exactly like your sample code, only less imperative: For simplest expressions, using | can be faster than || because even though it avoids doing a comparison it means using a branch implicitly and that can be many times more expensive. I did start with just one, but as stated in the original question I felt that "The string of comparisons was long and difficult to read, so I broke it up for readability". That aside, in this case I'm more interested in learning the behaviour of |= than in making this particular piece of code work. –  David Mason Commented Mar 21, 2010 at 21:48 I can't seem to be find a nice use case for this specific operator. I mean if all you care is the result why not stop where your condition are met? –  Farid Commented Dec 23, 2020 at 13:11 1 @Farid sometimes you don't want to stop, say I want to detect if any of a number of tasks did something. I have a busy flag, just because one of my tasks did something doesn't mean I don't want to run my other tasks, but if no task is busy, I want to take an action instead. –  Peter Lawrey Commented Dec 24, 2020 at 22:19 Though it might be overkill for your problem, the Guava library has some nice syntax with Predicate s and does short-circuit evaluation of or/and Predicate s. Essentially, the comparisons are turned into objects, packaged into a collection, and then iterated over. For or predicates, the first true hit returns from the iteration, and vice versa for and. If it is about readability I've got the concept of separation tested data from the testing logic. Code sample: The code looks more verbose and self-explanatory. You may even create an array in method call, like this: It's more readable than 'comparison string', and also has performance advantage of short-circuiting (at the cost of array allocation and method call). Edit: Even more readability can be simply achieved by using varargs parameters: Method signature would be: And the call could look like this: 1 Array allocation and a method call are a pretty big cost for short-circuiting, unless you've got some expensive operations in the comparisons (the example in the question is cheap though). Having said that, most of the time the maintainability of the code is going to trump performance considerations. I would probably use something like this if I were doing the comparison differently in a bunch of different places or comparing more than 4 values, but for a single case it's somewhat verbose for my tastes. –  David Mason Commented Apr 25, 2013 at 23:31 @DavidMason I agree. However keep in mind, that most modern calculators would swallow that kind of overhead in less than a few millis. Personally I wouldn't care about overhead until performance issues, which appears to be reasonable . Also, code verbosity is an advantage, especially when javadoc is not provided or generated by JAutodoc. –  Krzysztof Jabłoński Commented Apr 26, 2013 at 8:04 It's an old post but in order to provide a different perspective for beginners, I would like give an example. I think the most common use case for a similar compound operator would be += . I'm sure we all wrote something like this: What was the point of this? The point was to avoid boilerplate and eliminate the repetitive code. So, next line does exactly the same, avoiding to type the variable b1 twice in the same line. 1 It it harder to spot mistakes in the operation and the operator names, especially when the names are long. longNameOfAccumulatorAVariable += 5; vs. longNameOfAccumulatorAVariable = longNameOfAccumulatorVVariable + 5; –  Andrei Commented Mar 8, 2019 at 9:21 I think I'd prefer negativeValue = defaultStock < 0 || defaultWholesale < 0 etc. Aside from the inefficiency of all the boxing and wrapping going on here, I don't find it nearly as easy to understand what your code would really mean. –  Jon Skeet Commented Mar 21, 2010 at 9:17 I he has even more then 4 parameters and the criterion is the same for all of them then I like my solution, but for the sake of readability I would separate it into several lines (i.e. create List, find minvalue, compare minvalue with 0). –  Roman Commented Mar 21, 2010 at 9:20 That does look useful for a large number of comparisons. In this case I think the reduction in clarity isn't worth the saving in typing etc. –  David Mason Commented Mar 21, 2010 at 10:07 || logical boolean OR | bitwise OR |= bitwise inclusive OR and assignment operator The reason why |= doesn't shortcircit is because it does a bitwise OR not a logical OR. That is to say: Tutorial for java operators there is NO bitwise OR with booleans! The operator | is integer bitwise OR but is also logical OR - see Java Language Specification 15.22.2. –  user85421 Commented Jan 11, 2013 at 19:40 You are correct because for a single bit (a boolean) bitwise and logical OR are equivalent. Though practically, the result is the same. –  oneklc Commented Mar 20, 2013 at 22:26 Your Answer Reminder: Answers generated by artificial intelligence tools are not allowed on Stack Overflow. Learn more Sign up or log in Post as a guest. 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Let's consider a scenario where x is an int variable with a value of 5. int x = 5; If you want to add the double value 4.5 to the integer variable x and print its value, there are two methods to achieve this: Method 1: x = x + 4.5. Method 2: x += 4.5. Java Operators Java Comparison Operators. Comparison operators are used to compare two values (or variables). This is important in programming, because it helps us to find answers and make decisions. The return value of a comparison is either true or false. These values are known as Boolean values, and you will learn more about them in the Booleans and If ... Types of Assignment Operators in Java To assign a value to a variable, use the basic assignment operator (=). It is the most fundamental assignment operator in Java. It assigns the value on the right side of the operator to the variable on the left side. Example: int x = 10; int x = 10; In the above example, the variable x is assigned the value 10. Assignment, Arithmetic, and Unary Operators (The Java™ Tutorials The Simple Assignment Operator. One of the most common operators that you'll encounter is the simple assignment operator "=". You saw this operator in the Bicycle class; it assigns the value on its right to the operand on its left: ... The Java programming language provides operators that perform addition, subtraction, multiplication, and ... Java Operators: Arithmetic, Relational, Logical and more Java Assignment Operators. Assignment operators are used in Java to assign values to variables. For example, int age; age = 5; Here, = is the assignment operator. It assigns the value on its right to the variable on its left. ... 6. Java Bitwise Operators. Bitwise operators in Java are used to perform operations on individual bits. For example, Operators (The Java™ Tutorials > Learning the Java Language Learning the operators of the Java programming language is a good place to start. Operators are special symbols that perform specific operations on one, two, or three operands, and then return a result. As we explore the operators of the Java programming language, it may be helpful for you to know ahead of time which operators have the highest ... Assignment operator in Java Assignment Operators in Java: An Overview. We already discussed the Types of Operators in the previous tutorial Java. In this Java tutorial, we will delve into the different types of assignment operators in Java, and their syntax, and provide examples for better understanding.Because Java is a flexible and widely used programming language. Assignment operators play a crucial role in ... Assignment Operators in Java with Examples As you can see, In the above example, we are using assignment operator in if statement. We did a comparison of value 10 to an assignment operator which resulted in a 'true' output because the return of assignment operator is the value of left operand. Recommended Posts. Arithmetic Operators in Java with Examples; Unary Operators in Java ... Java Assignment Operators Java Assignment Operators. The Java Assignment Operators are used when you want to assign a value to the expression. The assignment operator denoted by the single equal sign =. In a Java assignment statement, any expression can be on the right side and the left side must be a variable name. For example, this does not mean that "a" is equal to ... Java Assignment Operators Java assignment operators are classified into two types: simple and compound. The Simple assignment operator is the equals ( =) sign, which is the most straightforward of the bunch. It simply assigns the value or variable on the right to the variable on the left. Compound operators are comprised of both an arithmetic, bitwise, or shift operator ... Java Assignment Operators Java Assignment Operators are used to optionally perform an action with given operands and assign the result back to given variable (left operand). The syntax of any Assignment Operator with operands is. operand1 operator_symbol operand2. In this tutorial, we will learn about different Assignment Operators available in Java programming language ... All Java Assignment Operators (Explained With Examples) There are mainly two types of assignment operators in Java, which are as follows: Simple Assignment Operator ; We use the simple assignment operator with the "=" sign, where the left side consists of an operand and the right side is a value. The value of the operand on the right side must be of the same data type defined on the left side. Operators in Java (Examples and Practice) Assignment Operators. Assignment operators help you set or change the value of a variable. Think of them as shortcuts for common operations. The basic assignment operator is =. For example: int length = 15; This sets the value of length to 15. But there are also compound assignment operators that combine an operation with assignment: +=: Add ... Java Operators The simple assignment operator (=) is a straightforward but important operator in Java. Actually, we've used it many times in previous examples. It assigns the value on its right to the operand on its left: int seven = 7; 9.2. Compound Assignments Assignment operators in java with examples Java Assignment operator (=) The assignment operator in java is used to assign (or to store) a value to a variable. Example of assignment operator. a = 18; It assigns the value 18 to the variable a. b = 8; It assigns the value 8 to the variable b. a =b; It assigns the value of variable b to variable a. Operators in Java The general format of the assignment operator is: variable = value;. In many cases, the assignment operator can be combined with other operators to build a shorter version of the statement called a Compound Statement.For example, instead of a = a+5, we can write a += 5. +=, for adding the left operand with the right operand and then assigning it to the variable on the left. Assignment Operator in Java with Example The = operator in java is known as assignment or simple assignment operator. It assigns the value on its right side to the operand (variable) on its left side. For example : int a = 10; // value 10 is assigned in variable a double d = 20.25; // value 20.25 is assigned in variable d char c = 'A'; // Character A is assigned in variable c. a = 20 ... Assignment Operators in Programming Assignment operators are used in programming to assign values to variables. We use an assignment operator to store and update data within a program. They enable programmers to store data in variables and manipulate that data. The most common assignment operator is the equals sign (=), which assigns the value on the right side of the operator to ... Assignment Operators in java 5. Because your sec statement will be evaluated as x = x * (2+5); x = 10; x *= 2+5; x = x * (2+5); While in the first case, its normal left to right precedence.Java guarantees that all operands of an operator are fully evaluated before the operator is applied. A compound assignment operator has the following syntax: <variable> <op>= <expression>. Compound Assignment Operator in Java The compound assignment operator is the combination of more than one operator. It includes an assignment operator and arithmetic operator or bitwise operator. The specified operation is performed between the right operand and the left operand and the resultant assigned to the left operand. Generally, these operators are used to assign results ... Compound assignment operators in Java Compound-assignment operators provide a shorter syntax for assigning the result of an arithmetic or bitwise operator. They perform the operation on the two operands before assigning the result to the first operand. The following are all possible assignment operator in java: 1. += (compound addition assignment operator) 2. Java Operators : |= bitwise OR and assign example a |= b; is the same as. a = (a | b); It calculates the bitwise OR of the two operands, and assigns the result to the left operand. To explain your example code: for (String search : textSearch.getValue()) matches |= field.contains(search); I presume matches is a boolean; this means that the bitwise operators behave the same as logical operators. Shortcut "or-assignment" (|=) operator in Java The |= is a compound assignment operator ( JLS 15.26.2) for the boolean logical operator | ( JLS 15.22.2 ); not to be confused with the conditional-or || ( JLS 15.24 ). There are also &= and ^= corresponding to the compound assignment version of the boolean logical & and ^ respectively. In other words, for boolean b1, b2, these two are ... Java Relational Operators with Examples Operator 6: Less than or equal to (<=) ... Java Assignment Operators with Examples. Operators constitute the basic building block of any programming language. Java too provides many types of operators which can be used according to the need to perform various calculations and functions, be it logical, arithmetic, relational, etc. ... Why Assignment Operator Overloading Must Return Reference? The overloaded assignment operator would behave differently from the built-in assignment operator, which could confuse others of our class. Conclusion In C++, when overloading the assignment operator, we must return a reference to the current object ( *this ) as it allows for assignment chaining, maintains consistency with built-in types, and ... essay homework paper phd project resume review speech study thesis