Kode Java

package org.kodejava.example.io;

import java.io.Console;
import java.util.Arrays;

public class ConsoleDemo {

    public static void main(String[] args) {
	//
	// Get a console object
	//
	Console console = System.console();
	
	//
	// Read username from the console
	//
	String username = console.readLine("Username: ");
	
	//
	// Read password, the password will not be echoed to the console screen
	// and returned as an array of characters.
	//
	char[] password = console.readPassword("Password: ");
	
	if (username.equals("admin") && String.valueOf(password).equals("secret")) {
	    console.printf("Welcome to Java Application %1$s.\n", username);
	    
	    //
	    // Clear the password after validation successful
	    //
	    Arrays.fill(password, ' ');
	} else {
	    console.printf("Invalid username or password.\n");	    
	}
    }

}