The Complete Guide to Basic Operators in Java

Author: Ragul Ram

Basic Operators in Java

Java has a robust set of operators for manipulating variables.

Operators of Java

  • Arithmetic Operators

  • Relational Operators

  • Bitwise Operators

  • Assignment Operators

  • Logical Operators

Arithmetic Operators

Arithmetic operators, like algebraic operators, are utilized in mathematical expressions.

  • Addition: Adds two operands ( + )

  • Subtraction: Subtracts two operands ( - )

  • Multiplication: Multiplies two operands ( * )

  • Division: Divides the first operand by the second ( / )

  • Modulus: Returns the remainder when the first operand is divided by the second ( % )

Sample Code:

public class OperatorExample{

public static void main(String args[]){

System.out.println(10*10/5+3-1*4/2);

}}

Relational Operators

The relational operators define the relationship between two operands.

  • The '==' operator determines whether or not the two operands are equal. If this is the case, it returns true. If not, it returns false. 5==5 will, for example, return true.

  • The '!=' operator determines whether or not the two operands are equal. If it does not, it returns true. If not, it returns false. It is the boolean equivalent of the '==' operator. 5!=5 will, for example, return false.

  • The '>' operator determines if the first operand is greater than the second. If this is the case, it returns true. If not, it returns false. 6>5 will, for example, yield true.

Sample Code:

class

}

Bitwise Operators

Java includes a number of bitwise operators for working with integer types such as long, int, short, char, and byte. Bitwise operators operate on the binary representation of numbers bit by bit.

  • & (bitwise 'and' ): The & operator performs a binary AND operation on the operands bit by bit.

  • | (bitwise 'or' ): The bitwise | operator performs binary OR operations on the operands bit by bit.

  • ( bitwise 'XOR' ): The bitwise operator performs binary XOR operations on the operands bit by bit.

Sample Code:

public class bitwise {

public static void main(String args[]) {

int A = 0x014;

int B = 0x016;

System.out.println("A & B=" + (A & B));

System.out.println("A | B=" + (A | B));

System.out.println(" ~A =" + (~A));

}

}

Assignment Operators

A variable's value is assigned using the assignment operator.

  • " = " Simple assignment operator. Assigns values from right side operands to left side operands. C = A + B will assign value of A + B into C

  • " += " Add AND assignment operator. It adds the right operand to the left operand and assigns the result to the left operand. C += A is equivalent to C = C + A

  • " -= " Subtract AND assignment operator. It subtracts the right operand from the left operand and assigns the result to the left operand. C -= A is equivalent to C = C – A

  • " *= " Multiply AND assignment operator. It multiplies the right operand with the left operand and assigns the result to the left operand. C *= A is equivalent to C = C * A

Logical Operators

Operations like logical AND, logical OR, and others are carried out via logical operators. Assume that variable a has the value true and variable b has the value false.

  • Logical AND ( "&&'' ): If both the left and right operands are true, this operator returns true; otherwise, it returns false. For instance, a && b is false.

  • Logical OR ( ''||'' ): This operator returns true if either of the left or right operands is true. When both the left and right operands are false, it returns false. For instance, a || b is True.

  • Logical NOT (''! '' ): This is a unary operator that can only be used with one operand. This will return true if the operand is false and false if it is true. For instance,!a is false, and! b is true.