Nested if-else statement
A nested if-else statement means an if-else statement containing another if-else statement. Using nested if-else statements we can control the flow of the program based on multiple levels of conditions.
Syntax
if (<condition 1>) { if (<condition 2>) { // Code to be executed if condition 1 and 2 both are true } else { // Code to be executed if condition 1 is true but 2 is false } } else { if (<condition 1>) { // Code to be executed if condition 1 and 2 both are true if (<condition 2>) { // Code to be executed if condition 1 is true but 2 is false } }
Example
In this program, we are comparing person A’s age with Person B, C.
import java.util.Scanner; public class NestedIfElseExample { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("Enter age for person A : "); int ageA = scanner.nextInt(); System.out.println("Enter age for person B : "); int ageB = scanner.nextInt(); System.out.println("Enter age for person C : "); int ageC = scanner.nextInt(); if (ageA > ageB) { if (ageA > ageC) { System.out.println("A is older than B and C."); } else { System.out.println("A is older than B, but younger than C"); } } else { if (ageA > ageC) { System.out.println("A is younger than B, but older than C."); } else { System.out.println("A is younger than B and C."); } } } }