Arithmetic operators are:Focuz

2. operator difference in numbers –

3. operator product numbers *

4. operator quotient of numbers /

5. operator of the remainder (modulo)%

6. increment and decrement operators: ++ and —

Operators +, -, *, / and% for the operands is a numerical equivalent of the well-known mathematical operations.

Operators ++ and – – are unary. The operator ++ is used to increase one of its operand and the operator – the same decrease the value.

public class operators {

public static void main (String [] args) {

int a = 5;

int b = 4;

int c = a + b; // = 9

c = a-b; // = 1

c = a * b; // = 20

c = a / b; // = 1 as the 4 * 1= 4, and is residues 1

c= a % b; // 1 = remainder

}

}

A very important role to play in programming operators increment and decrement. They are used to increase or decrease the value of a variable by 1. They are therefore often used in loops.

There are two kinds of them:

prefix – increase the value before assigning

inta = 6;

intb = 3;

int c = a + b++; // C = a + b, and only then b = b + 1;

c = (a ++) + b; // C = a + b, then a = a + 1

int x = 5;

System.out.println (x ++);

System.out.println (x);

will display twice the number 6,

while the effect of start up code:

int x = 5;

System.out.println (x ++);

System.out.println (x);

will display the number 5 and then the number 6.

Instructions System.out.println (++ x) makes the first is incremented value of the variable x and then this value is read and displayed. Instructions System.out.println (x ++) has the semantics, the first is taken and displayed value of the variable x, and then this value is incremented.