Arithmetic Operators

Operator	Performs
+	Additon (also used for String concatenation)
-	Subtraction
/	Division
*	Multiplication
%	Gives Remainder
++	Pre or post increment
--	Pre or post decrement

class ArithmeticOperation{
 public static void main(String args[]){
  int operand1 = 30;
  int operand2 = 10;

  System.out.println("Addition of operand1 and operand2 is " + (operand1 + operand2));
  System.out.println("Subtraction of operand1 and operand2 is " + (operand1 - operand2));
  System.out.println("Multiplication of operand1 and operand2 is " + (operand1 * operand2));
  System.out.println("Division of operand1 and operand2 is " + (operand1 / operand2));
  System.out.println("Remainder of operand1 and operand2 is " + (operand1 % operand2));
 }
}

Output

Addition of operand1 and operand2 is 40
Subtraction of operand1 and operand2 is 20
Multiplication of operand1 and operand2 is 300
Division of operand1 and operand2 is 3
Remainder of operand1 and operand2 is 0

Some points to be Noted

1. Multiplication, Division and remainder operators has more priority than Addition and Subtraction operators.

  Example

class ArithmeticPriority{
 public static void main(String args[]){
  int var1 = 10, var2 = 20;
  int result = var1+var2*var1;
  System.out.println(result);
  
  result = var1-var2/var1;
  System.out.println(result);
  
  result = var1+var2%var1;
  System.out.println(result);
 }
}

 
Output

210
8
10

Explanation

    for the Expression

        result = var1+var2*var1

                = 10 + 20*10

                = 10 +200

                = 210

        result = var1-var2/var1

                = 10-20/10

                = 10-2

                = 8

        result = var1+var2%var1

                = 10 + 20 % 10

                = 10 + 0

                = 10

2. Remainder operator always returns the sign of numerator

    Ex:

        5 % 2 = 1

        -5 % 2 = -1

class RemainderEx{
 public static void main(String args[]){
  int var1 = 25, var2 = 10;
  System.out.println(var1%var2);
  
  var1= -25;
  System.out.println(var1%var2);
 }
}

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