Java Programming Tutorial - 6 - Getting User Input

The package that needs to be imported to accept user input is java.io. The java.io package contains classes and interfaces used for input and output.

The setup:

import java.io.*; 

class GetUserInput{ }

User input classes

To get user input, use the BufferedReader and InputStreamReader classes.

• The InputStreamReader class - reads the user's input.
• The BufferedReader class - buffers the user's input to make it work more efficiently.

1. package com.tctalk.myapp.java.src;
3. import java.io.BufferedReader;
4. import java.io.IOException;
5. import java.io.InputStreamReader;
7. /**
8. * ReaduserInput.java - [This code reads the user input data from command prompt]
9. *
10. * @author TechCuBeTalk.com
11. * @version 1.0
12. */
13. public class ReaduserInput {
15.     public static void main(String[] args) {
17.         //  Ask the user to enter their name
18.         System.out.print("Please enter your name: ");
20.         //  To read user input create a reader object
21.         BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
23.         String userName = null;
25.         //  read the user input from command prompt by readLine() method
26.         try {
27.             userName = br.readLine();
28.         } catch (IOException ioExcption) {
29.             System.out.println("IO exception occurred!");
30.             System.exit(1);
31.         }
33.         System.out.println("Welcome " + userName + "!! Have a Good day!!");
35.     }
37. }

For more practice, here's a demo:


via[techcubetalk.com]

Posted in: Java,Programming