Share on Google+Share on Google+

How to read and display password from the console

Advertisement
This tutorial demonstrate how to read and display password from the console.

Description:

Console class was introduced in jdk 1.6 This class help in taking the input from the console using its readPassword method . Here in this example this sample program it will ask to feed the password. Note when feeding the password it won't echo password but it accept and display later.

Code:

import java.io.*;

public class ReadDisplayPassword {

  public static void main(String[] args) {

    Console cons = System.console();
    if (cons == null) {
      System.out.println("Console Object is not available.");
      System.exit(0);
    else {
      String format = "%1$4s %2$4s %3$8s%n";
      char[] pwd = cons.readPassword(format, "Enter""user",
      "Password :");
      System.out.print("You have entered password : ");
      System.out.println(pwd);
    }
  }
}

Output:

Advertisements

Advertisement

Posted on: April 10, 2010 If you enjoyed this post then why not add us on Google+? Add us to your Circles

Share this Tutorial Follow us on Twitter, or add us on Facebook or Google Plus to keep you updated with the recent trends of Java and other open source platforms.