Take in username and password from the console.

ConsoleInput.java

import java.io.Console;

/**
 * Take in username and password from the console.
 */
public class ConsoleInput {

    public static void main(String[] args) {

        Console console = System.console();
        if (console == null) {
            System.out.printf("No console available, program not started in interactive shell%n");
            System.exit(1);
        }

        String username = console.readLine("Enter your username: ");
        char[] password = console.readPassword("Hello %s, please enter your password: ", username);

        System.out.printf("The entered password was: %s%n", new String(password));
    }
}