Nested if Statements In Java

Control Statements > Selection Statements >
Siva Nookala - 22 Feb 2019

When a if condition is included in the if block of some other if condition then those are called nested ifs.

We can have as many nested ifs and it can go into many levels.

Classify Person

CODE

class ClassifyPerson
{
    public static void main(String arg[])
    {
        int age = 35;
        char gender = 'F'; // M - Male, F - Female
        
        if( age > 35 ) // outer if
        {
            if( gender == 'M' )    // LINE A
            {
                System.out.println("Man");
            }
            else
            {
                System.out.println("Woman");
            }
        }
        else
        {
            if( gender == 'M' )    // LINE B
            {
                System.out.println("Boy");
            }
            else
            {
                System.out.println("Girl");
            }
        
        }
    
    }
}

OUTPUT

Girl

DESCRIPTION

Here we have two variables age and gender. In the outer if the condition age > 35 is checked, if its true, the block starting with LINE A is executed. The inner if condition present in LINE A checks for gender and prints Man or Woman. If age is less than 35 then the else block starting with LINE B is executed. The if in LINE B checks for gender and prints Boy or Girl.

THINGS TO TRY

Add one more variable marks of type int to the above program and modify the program such that it prints Intelligent when marks greater than or equal to 75, otherwise it prints Dull. and If age greater than or equal to 35 and gender equal to M it prints Man otherwise it prints Woman. Boy or Girl when age less than 35.
Examples:
1. when marks are 75, age is 35 and gender is F output should be Intelligent Woman
2. marks are 40, age is 22 and gender is M output should be Dull Boy

Try it Online

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