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Example: Greatest of Three Numbers using Nested if-else in Java
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Main.java
STDIN
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// Greatest of Three Numbers using Nested if-else import java.util.Scanner; // Main class containing the entry point of the program public class Main { public static void main(String[] args) { // Step 1: Create a Scanner object and read three numbers Scanner scanner = new Scanner(System.in); System.out.print("Enter the first number: "); int num1 = scanner.nextInt(); System.out.print("Enter the second number: "); int num2 = scanner.nextInt(); System.out.print("Enter the third number: "); int num3 = scanner.nextInt(); // Step 2: Use nested if-else to find the greatest number int greatest; if (num1 >= num2) { if (num1 >= num3) { greatest = num1; // num1 is greatest } else { greatest = num3; // num3 is greatest (num1 was > num2, but num3 > num1) } } else { // num2 > num1 if (num2 >= num3) { greatest = num2; // num2 is greatest } else { greatest = num3; // num3 is greatest (num2 was > num1, but num3 > num2) } } // Step 3: Print the greatest number System.out.println("The greatest number is: " + greatest); // Step 4: Close the scanner scanner.close(); } }
Output
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