Java program:find greatest of three numbers using method
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Java program:find greatest of three numbers using method
Java program:find greatest of three numbers using method
In this tutorial, we will discuss the concept of Java program:find greatest of three numbers using method
In this post, we will learn how to find the greatest 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 largest number of among three numbers in Java language
However, in this program, we embed the logic of the “find the greatest of three number” program in the function.
Here, I have explained how to find the greatest number from the given three number and how to embed this logic in the function.
Program 1
Find the greatest of three numbers using if else if statements
This program allows the user to enter three numbers and compare to select the largest number using if-else-if statements
import java.util.Scanner;
class greatestNum{
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
findLargest(num1,num2,num3);//calling the method
}
static void findLargest(int num1,int num2, int num3){//method definition
if(num1>=num2 && num1>=num3){
System.out.println(num1+" is the biggest number");
}
else if(num2>=num1 && num2>=num3){
System.out.println(num2+" is the biggest number");
}
else{
System.out.println(num3+" is the biggest number");
}
}
}
When the above code is executed, it produces the following results
Enter the first number 123 Enter the second number 789 Enter the third number 543 789 is the biggest number
Program 2
Find the greatest of three numbers using nested if statements
This program allows the user to enter three numbers and compare to select the largest number using nested if statements
import java.util.Scanner;
class greatestNum1{
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
findLargest(num1,num2,num3);//calling the method
}
static void findLargest(int num1,int num2, int num3){//method definition
if(num1>=num2){
if(num1>=num3)
System.out.println(num1+" is the biggest number");
else
System.out.println(num3+" is the biggest number");
}
else{
if(num2>=num3)
System.out.println(num2+" is the biggest number");
else
System.out.println(num3+" is the biggest number");
}
}
}
When the above code is executed, it produces the following results
Enter the first number 987 Eneter the second number 456 Enter the third number 789 987 is the biggest number
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