QN006. Write a program which demonstrates the use of nested switch statement.

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1. Objective

To be tested for quality against a list of values and variable being switched on is to checked for each case using nested switch statement.

2. Theory

The Java switch statement executes one statement from multiple condition. It is like if-else-if ladder statement. Nested switch statement means switch statement means switch statement within switch statement.

3. Source Code

import java.util.Scanner;
public class Qn006{
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.println("1. Separate Information\n2. Combined Information");
System.out.println("\nEnter a choice to display information(1/2): ");
int choice1 = input.nextInt();
switch(choice1)
{
case 1:
System.out.println("1. Name\n2. Phone No.");
System.out.println("Enter your choice(1/2)");
int choice2 = input.nextInt();
switch(choice2)
{
case 1:
System.out.println("Name : Sajan Kc");
break;
case 2:
System.out.println("Phone No. : 9843337779");
break;
default:
System.out.println("Invalid input");
}
break;
case 2:
System.out.println("Name: Sajan Kc\nPhone No. : 9843337779");
break;
default:
System.out.println("Invalid input");
}
}
}


4. Output

1. Separate Information
2. Combined Information

Enter a choice to display information(1/2): 1
1. Name
2. Phone No.
Enter your choice(1/2): 2
Phone No: 9843337779

5. Conclusion

In this way, I would like to conclude that, we can use any number of nested switch statement according to our problem.