Relational Operators

Relational Operators

Relational operators in Java are used to compare two values. They return a boolean result, which is either true or false. Relational operators are fundamental for controlling the flow of a program using conditional statements such as if, while, and for.

List of Relational Operators #

1. Equal to (==)
2. Not equal to (!=)
3. Greater than (>)
4. Less than (<)
5. Greater than or equal to (>=)
6. Less than or equal to (<=)

Examples and Explanations #

1. Equal to (==)

The equal to operator checks if two values are equal.

public class Main {

    public static void main(String[] args) {

        int a = 10;

        int b = 20;

        boolean result = (a == b);

        System.out.println("a == b: " + result);  

        b = 10;

        result = (a == b);

        System.out.println("a == b: " + result);  

    }

}

Output: 
a == b: false
a == b: true

2. Not equal to (!=)

The not equal to operator checks if two values are not equal.

public class Main {

    public static void main(String[] args) {

        int a = 10;

        int b = 20;

        boolean result = (a != b);

        System.out.println("a != b: " + result);  

        b = 10;

        result = (a != b);

        System.out.println("a != b: " + result);  
    }

}

Output: 
a != b: true
a != b: false

3. Greater than (>)

The greater than operator checks if the value on the left is greater than the value on the right.

public class Main {

    public static void main(String[] args) {

        int a = 10;

        int b = 20;

        boolean result = (a > b);

        System.out.println("a > b: " + result);  

        a = 30;

        result = (a > b);

        System.out.println("a > b: " + result); 

    }

}

Output: 
a > b: false
a > b: true

4. Less than (<)

The less than operator checks if the value on the left is less than the value on the right.

public class Main {

    public static void main(String[] args) {

        int a = 10;

        int b = 20;

        boolean result = (a < b);

        System.out.println("a < b: " + result);  

        a = 30;

        result = (a < b);

        System.out.println("a < b: " + result); 

    }

}

Output: 
a < b: true
a < b: false

5. Greater than or equal to (>=)

The greater than or equal to operator checks if the value on the left is greater than or equal to the value on the right.

public class Main {

    public static void main(String[] args) {

        int a = 20;

        int b = 20;

        boolean result = (a >= b);

        System.out.println("a >= b: " + result);  

        a = 10;

        result = (a >= b);

        System.out.println("a >= b: " + result);  

    }

}

Output:
a >= b: true
a >= b: false

6. Less than or equal to (<=)

The less than or equal to operator checks if the value on the left is less than or equal to the value on the right.

public class Main {

    public static void main(String[] args) {

        int a = 20;

        int b = 20;

        boolean result = (a <= b);

        System.out.println("a <= b: " + result);  

        a = 30;

        result = (a <= b);

        System.out.println("a <= b: " + result);  

    }

}

Output:
a <= b: true
a <= b: false

Summary

Relational operators are crucial in making comparisons between values in Java. They help in decision-making processes within programs by providing boolean results that control the flow of execution. Understanding how to use these operators effectively allows you to write more dynamic and responsive code.