Daily Java Challenge #3 – Find the Largest of Three Numbers (Beginner Level)

🧠 Problem Statement

Write a Java program to find the largest among three numbers entered by the user.

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📥 Input

Three numbers, for example:
25, 89, 41

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📤 Output

A message like:
The largest number is 89.

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💡 Simple Explanation

Let’s imagine three boxes with numbers inside. We want to peek inside all three boxes and figure out which number is the biggest.

We’ll use if-else conditions to compare the numbers one by one.

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🧾 Java Code

import java.util.Scanner;

public class LargestOfThree {
    public static void main(String[] args) {
        // Step 1: Ask the user for three numbers
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter first number: ");
        int a = scanner.nextInt();

        System.out.print("Enter second number: ");
        int b = scanner.nextInt();

        System.out.print("Enter third number: ");
        int c = scanner.nextInt();

        // Step 2: Compare them to find the largest
        int largest;

        if (a >= b && a >= c) {
            largest = a;
        } else if (b >= a && b >= c) {
            largest = b;
        } else {
            largest = c;
        }

        // Step 3: Print the result
        System.out.println("The largest number is " + largest + ".");
    }
}

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🔍 Step-by-Step Explanation (Like You’re Brand New to Java)

1. We ask the user to enter 3 numbers.
2. We use if-else to compare:

• Is a bigger than both b and c? If yes, it’s the largest.
• If not, is b the biggest?
• If none of those, then c must be the largest.

1. We store the biggest number in the variable largest.
2. We display the result.

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📚 Example

👉 Input: 45, 78, 12
✅ Output: The largest number is 78.

👉 Input: 5, 5, 5
✅ Output: The largest number is 5.

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🎯 Mini-Challenge for You

Try writing this program using nested if or even a ternary operator (if you’re feeling adventurous!).

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📝 See you tomorrow with Challenge #4!
Let’s keep learning Java together, one baby step at a time. 🚀