Java Console Prompt promptHidden(String message)

Description

Prompot user for input, hiding the input if possible.

License

Open Source License

Parameter

Parameter	Description
message	a parameter

Return

a line of user's input

Declaration

public static String promptHidden(String message) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Scanner;

public class Main {
    private static Scanner in = new Scanner(System.in);

    /**//w  w w . jav a2s.c  o  m
     * Prompot user for input, hiding the input if possible. Useful for password input.
     * @param message
     * @return a line of user's input
     */
    public static String promptHidden(String message) {
        if (System.console() != null) {
            System.out.print(message + ": ");
            char[] line = System.console().readPassword();
            return new String(line);
        }
        return prompt(message);
    }

    /**
     * Prompt user for input.
     * @param message
     * @return a line of user's input
     */
    public static String prompt(String message) {
        System.out.print(message + ": ");
        return in.nextLine().trim();
    }

    /**
     * Prompt user for input, providing a default input.
     * @param message
     * @param defaults
     * @return a line of user's input
     */
    public static String prompt(String message, String defaults) {
        System.out.print(message + " [" + defaults + "]: ");
        String line = in.nextLine().trim();
        return line.equals("") ? defaults : line;
    }
}

Related

1. prompt(String message)
2. prompt(String message, String defaults)
3. prompt(String output)
4. prompt(String prompt)
5. promptEnterKey()
6. promptPressEnterToExit()
7. promptRequired(String message)