Java Program to Find Smallest Number
Among Three Numbers

Last Updated: 14 August, 2022

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On this page, we are going to learn how to write a Java program to find the smallest number among three numbers.

In the given program 1, three different numeric values are written in the program and to find the smallest number, the if-else statements are used.

In the other program 2, there is one change three numeric values are taking from the keyword (user input) remaining operations are same.

Let's see the Java program implementation.

Program 1: Find Smallest Number Among Three Numbers

public class SmallestNumber { public static void main(String[] args) { int num1 = 130; int num2 = 70; int num3 = 150; // Checking num1 is smallest if (num1 <= num2 && num1 <= num3) System.out.println(num1 + " is the smallest number."); // Checking num2 is smallest else if (num2 <= num1 && num2 <= num3) System.out.println(num2 + " is the smallest number."); else // num3 is smallest when above both conditions are false. System.out.println(num3 + " is the smallest number."); } }

Output

70 is the smallest number.

Program 2: Find Smallest Number Among Three Numbers with user input

import java.util.Scanner; public class SmallestNumber2 { public static void main(String[] args) { 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(); scanner.close(); // Checking num1 is smallest if (num1 <= num2 && num1 <= num3) System.out.println(num1 + " is the smallest number."); // Checking num2 is smallest else if (num2 <= num1 && num2 <= num3) System.out.println(num2 + " is the smallest number."); else // num3 is smallest when above both conditions are false. System.out.println(num3 + " is the smallest number."); } }

Output

Enter the first number: 40
Enter the second number: 10
Enter the third number: 70
10 is the smallest number.