Program to find largest number among three numbers in Java

Program to find the largest number among three numbers in Java

In this program, we will discuss a simple concept of the program to find the largest number among three numbers in Java programming language.

In this topic, we learn how to find the biggest number from given three numbers in Java programming language. we can use the operator in Java language to find the biggest number of this program.

Using if statements to find the largest number

Among integer numbers

Program 1

import java.util.Scanner;
class Large_Three{
public static void main (String args[]){
double max;//variable declaration
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//get input from user for first number
System.out.print("Enter the second number: ");
int num2=scan.nextInt();//get input from user for second number
System.out.print("Enter the third number: ");
int num3=scan.nextInt();//get input from user for third number
if(num1>=num2 && num1>=num3){//num1 compare with num2 and num3
    System.out.println("\n The largest number is: "+num1);
}
if(num2>=num1 && num2>=num3){//num2 compare with num1 and num3
    System.out.println("\n The largest number is: "+num2);
}
if(num3>=num1 && num3>=num2){//num3 compare with num1 and num2
    System.out.println("\n The largest number is: "+num3);
}
}
}

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

Enter the first number: 56
Enter the second number:89
Enter the third number: 32

The largest number : 89

 

Among the floating point

import java.util.Scanner;
class Large_Three1{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
double num1=scan.nextDouble();//get input from user for first number
System.out.print("Enter the second number: ");
double num2=scan.nextDouble();//get input from user for second number
System.out.print("Enter the third number: ");
double num3=scan.nextDouble();//get input from user for third number

if(num1>=num2 && num1>=num3){
    System.out.println("\n The largest number is: "+num1);
}
if(num2>=num1 && num2>=num3){
    System.out.println("\n The largest number is: "+num2);
}
if(num3>=num1 && num3>=num2){
    System.out.println("\n The largest number is: "+num3);
}
}
}

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

Enter the first number: 4.6
Enter the second number:6.5
Enter the third number: 3.7

The largest number is: 6.5

 

Using if-else statements to find the largest

import java.util.Scanner;
class Large_Three1{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//get input from user for first number
System.out.print("Enter the second number: ");
int num2=scan.nextInt();//get input from user for second number
System.out.print("Enter the third number: ");
int num3=scan.nextInt();//get input from user for third number

if(num1>=num2 && num1>=num3){
    System.out.println("\n The largest number is: "+num1);
}
else if(num2>=num1 && num2>=num3){
    System.out.println("\n The largest number is: "+num2);
}
else{
    System.out.println("\n The largest number is: "+num3);
}
}
}

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

Enter the first number: 45
Enter the second number:67
Enter the third number:80

The largest number is:80

 

Using nested if statements to find the largest

import java.util.Scanner;
class Large_Three2{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//get input from user for first number
System.out.print("Enter the second number: ");
int num2=scan.nextInt();//get input from user for second number
System.out.print("Enter the third number: ");
int num3=scan.nextInt();//get input from user for third number

if(num1>=num2) {
     if(num1>=num3){
    System.out.println("\n The largest number is: "+num1);
      }
      else{
        System.out.println("\n The largest number is: "+num3);
      }
}
    
else{
    if(num2>=num3){
    System.out.println("\n The largest number is: "+num2);
       }
     else{
    System.out.println("\n The largest number is: "+num3);
}
}
}
}

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

Enter the first number: 67
Enter the second number: 99
Enter the tird number: 65

The largest number is: 99

 

In the above, all programs, Three variables num1,num2,num3 are compared one by one using if related statements to find largest one.

Suggested for you

Operator in Java language

If statements in Java language

Nested if statements in Java language

Data type in Java language

Method in Java language

 

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