Conditional Constructs in Java

Chapter 9

Conditional Constructs in Java

Class 9 - Logix Kips ICSE Computer Applications with BlueJ

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Java Programs - Find the smallest of the three given integers using the min() method of the Math class

import java.util.Scanner;
 
public class SmallestOfThree {
    public static void main(String[] args) {
 
        Scanner sc = new Scanner(System.in);
 
        System.out.print("Enter first integer: ");
        int a = sc.nextInt();
 
        System.out.print("Enter second integer: ");
        int b = sc.nextInt();
 
        System.out.print("Enter third integer: ");
        int c = sc.nextInt();
 
        // Find smallest using Math.min()
        int smallest = Math.min(a, Math.min(b, c));
 
        System.out.println("\nThe smallest number is: " + smallest);
 
        sc.close();
    }
}

  SAMPLE INPUT : 
Enter first integer: 25
Enter second integer: 12
Enter third integer: 18

 SAMPLE OUTPUT : 
The smallest number is: 12

Explanation

1. Input Three Integers

int a = sc.nextInt();
int b = sc.nextInt();
int c = sc.nextInt();

• Reads three integer values from the user.

2. Using Math.min()

int smallest = Math.min(a, Math.min(b, c));

• Math.min(b, c) → finds the smaller of b and c
• Math.min(a, result) → compares a with the smaller value
• Final result is the smallest among all three numbers

3. Output

System.out.println("The smallest number is: " + smallest);

• Displays the smallest integer.