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Java - Arithmetic Operators with Examples
Java Arithmetic Operators
Java arithmetic operators are used in mathematical expressions in the same way that they are used in algebra. The following table lists the arithmetic operators −
Assume integer variable A holds 10 and variable B holds 20, then −
Operator | Description | Example |
---|---|---|
+ (Addition) | Adds values on either side of the operator. | A + B will give 30 |
- (Subtraction) | Subtracts right-hand operand from left-hand operand. | A - B will give -10 |
* (Multiplication) | Multiplies values on either side of the operator. | A * B will give 200 |
/ (Division) | Divides left-hand operand by right-hand operand. | B / A will give 2 |
% (Modulus) | Divides left-hand operand by right-hand operand and returns remainder. | B % A will give 0 |
++ (Increment) | Increases the value of operand by 1. | B++ gives 21 |
-- (Decrement) | Decreases the value of operand by 1. | B-- gives 19 |
The following programs are simple examples which demonstrate the arithmetic operators. Copy and paste the following Java programs as Test.java file, and compile and run the programs −
Example 1
In this example, we're creating two variables a and b and using arithmatic operators. We've performed addition, subtraction, multiplication and division operations and printed the results.
public class Test { public static void main(String args[]) { int a = 10; int b = 20; System.out.println("a + b = " + (a + b) ); System.out.println("a - b = " + (a - b) ); System.out.println("a * b = " + (a * b) ); System.out.println("b / a = " + (b / a) ); } }
Output
a + b = 30 a - b = -10 a * b = 200 b / a = 2
Example 2
In this example, we're creating three variables a,b and c and using arithmatic operator %. We've performed Modulus operations between their values.
public class Test { public static void main(String args[]) { int a = 10; int b = 20; int c = 25; System.out.println("b % a = " + (b % a) ); System.out.println("c % a = " + (c % a) ); } }
Output
b % a = 0 c % a = 5
Example 3
In this example, we're creating two variables a and d and using arithmatic operators. We've performed post increment, pre increment, post decrement and post increment operations and printed the results.
public class Test { public static void main(String args[]) { int a = 10; int d = 25; System.out.println("a++ = " + (a++) ); System.out.println("a-- = " + (a--) ); // Check the difference in d++ and ++d System.out.println("d++ = " + (d++) ); System.out.println("++d = " + (++d) ); } }
Output
a++ = 10 b-- = 11 d++ = 25 ++d = 27
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