List of Arithmetic Operators in Java

Introduction

Operators	Description	Type	Usage	Result
+	Addition	Binary	2 + 5	7
-	Subtraction	Binary	5 - 2	3
+	Unary plus	Unary	+5	Positive five. Same as 5
-	Unary minus	Unary	-5	Negative of five
*	Multiplication	Binary	5 * 3	15
/	Division	Binary	5 / 2	2
%	Modulus	Binary	5 % 3	2
++	Increment	Unary	num++	Evaluates to the value of num, increments num by 1.
--	Decrement	Unary	num--	Evaluates to the value of num, decrements num by 1.
+=	Arithmetic compound-assignment	Binary	num += 5	Adds 5 to the value of num and assigns the result to num.
-=	Arithmetic compound assignment	Binary	num -= 3	Subtracts 3 from the value of num and assigns the result to num.
*=	Arithmetic compound assignment	Binary	num *= 15	Multiplies 15 to the value of num and assigns the result to num.
/=	Arithmetic compound assignment	Binary	num /= 5	Divides the value of num by 5 and assigns the result to num.
%=	Arithmetic compound assignment	Binary	num %= 5	Calculates the remainder of num divided by 5 and assigns the result to num.

Demo Code

public class Main {
  public static void main(String[] args) {
    int i = 110;//  w  w  w  .j a v  a 2s  .com
    float f = 120.2F;
    byte b = 5;
    String str = "Hello";
    boolean b1 = true;

    i += 10; // Assigns 120 to i

    i -= 15; // Assigns 95 to i. Assuming i was 110
    i *= 2; // Assigns 220 to i. Assuming i was 110
    i /= 2; // Assigns 55 to i. Assuming i was 110
    i /= 0; // A runtime error . Division by zero error
    f /= 0.0; // Assigns Float.POSITIVE_INFINITY to f
    i %= 3; // Assigns 2 to i. Assuming i is 110

    str += " How are you?"; // Assigns "Hello How are you?" to str
    str += f; // Assigns "Hello120.2" to str. Assuming str was "Hello"
    b += f; // Assigns 125 to b. Assuming b was 5, f was 120.2
    str += b1; // Assigns "Hellotrue" to str. Assuming str was "Hello"
  }
}

List of Arithmetic Operators in Java - Java Language Basics

Introduction

Demo Code

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