Question

what are the three ways to input the values in a Java programming ​

Answer 1

Explanation:

In this tutorial we are gonna see how to accept input from user. We are using Scanner class to get the input. In the below example we are getting input String, integer and a float number. For this we are using following methods:

1) public String nextLine(): For getting input String

2) public int nextInt(): For integer input

3) public float nextFloat(): For float input

Example:

import java.util.Scanner;

class GetInputData

{

public static void main(String args[])

{

int num;

float fnum;

String str;

Scanner in = new Scanner(System.in);

//Get input String

System.out.println("Enter a string: ");

str = in.nextLine();

System.out.println("Input String is: "+str);

//Get input Integer

System.out.println("Enter an integer: ");

num = in.nextInt();

System.out.println("Input Integer is: "+num);

//Get input float number

System.out.println("Enter a float number: ");

fnum = in.nextFloat();

System.out.println("Input Float number is: "+fnum);

}

}

Answer 2

Answer:

Example of integer input from user

import java.util.*;

class UserInputDemo.

{

public static void main(String[] args)

{

Scanner sc= new Scanner(System.in); //System.in is a standard input stream.

System.out.print("Enter first number- ");

int a= sc.nextInt();