Java program:find smallest of three numbers using method

 Java program:find the smallest of three numbers using method

In this tutorial, we will discuss the concept of Java program:find the smallest of three numbers using the method.

In this post, we will learn how to find the smallest number among three numbers using a user-defined method in the Java programming language

 

In my previous post, I have explained the various approaches to find the smallest number of among  three numbers in Java language

However, in this program, we embed the logic of the “find the smallest of three numbers” program in the method.

Here, I have explained how to find the smallest number from the given three number and how to embed this logic in the method.

Program 1

Find the smallest of three numbers using if else if statements

This program allows the user to enter three numbers and compare to select the smallest number using if-else-if statements

import java.util.Scanner;
class SmallestNum2{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the first number\n");
int num1=scan.nextInt();//reads num1 from user
System.out.print("Enter the second number\n");

int num2=scan.nextInt();;//reads num2 from user
System.out.print("Enter the Third number\n");

int num3=scan.nextInt();;//reads num3 from user

//calling the method
findSmallest(num1,num2,num3);

}

static void findSmallest(int num1,int num2, int num3){//method definition
    if(num1<=num2 && num1<=num3){
        System.out.println(num1+" is the smallest number");
        
    }
    else if(num2<=num1 && num2<=num3){
        System.out.println(num2+" is the smallest number");
        
    }
    else{
        System.out.println(num3+" is the smallest number");
        
    }
    
}

}

When the above code is executed, it produces the following results

Enter the first number
45
Enter the second number
89
Enter the third number
23
23 is the smallest number

Program 1

Find the smallest of three numbers using nested if statements

This program allows the user to enter three numbers and compare to select the smallest number using nested-if statements

import java.util.Scanner;
class SmallestNum3{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the first number\n");
int num1=scan.nextInt();//reads num1 from user
System.out.print("Enter the second number\n");

int num2=scan.nextInt();;//reads num2 from user
System.out.print("Enter the Third number\n");

int num3=scan.nextInt();;//reads num3 from user

//calling the method
findSmallest(num1,num2,num3);

}
static void findSmallest(int num1,int num2, int num3){//method definition
    if(num1<=num2){
    if(num1<=num3)
        System.out.println(num1+" is the smallest number");
        else
        System.out.println(num3+" is the smallest number");
    }
    else{
    
    if(num2<=num3)
        System.out.println(num2+" is the smallest number");
        
    else
        System.out.println(num3+" is the smallest number");
    }
    
}

}

When the above code is executed, it produces the following results

Enter the first number
79
Enter the second number
23
Enter the third number
56
23 is the smallest number

 

 

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