Arithmetic Operators in Java - Java Language Tutorial

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Arithmetic operators are the most widely used operators of the Java language simply because they're used to compute numbers.
There are four different arithmetic operators, namely:

+ (addition)
- (subtraction)
* (multiplication)
/ (division)
% (modulo)
- (unary minus)

Arithmetic operators can be used on any primitive data type except for boolean.

Here are some examples of how to use them:

//addition
int i = 5, j = 6;
System.out.println(i + j);

//subtraction
float i1 = 5;
int j1 = 6;
System.out.println(i1 + j1);

//multiplication
int i2 = 5, j2 = 6;
System.out.println(i2 * j2);

//division
double i3 = 5;
int j3 = 6;
System.out.println(i3 j3);

//modulo
int i4 = 15, j4 = 4;
System.out.println(i4 % j4);

//unary minus
int i5 = 5;
System.out.println(-i5);

Modulo returns the remainder when the first operand is divided by the second operand an integral number of times.
The unary minus simply converts a positive number to a negative (or a negative number to positive, like -(-5)).

It's important to remember that if one of the operands is a floating-point number, floating-point arithmetic will be used.
If not then integer arithmetic will be used, so the output of the above code will look like this:

11
11.0
30
0.8333333333333334
3
-5

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