how to hide password with java.util.Scanner (no java.io.Console)

Question

in java, how to hide password with java.util.Scanner ?

CAUTION: I need not use java.io.Console solution

Scanner input = new Scanner(System.in);
System.out.println("What is your password?");
password = input.nextLine();

is it possible to overide Scanner (org.junit.contrib.java.lang.system.StandardOutputStreamLog)?

is it possible use a other mask system (by an other thread (add * by overide)?

Possible duplicate of [Hide input on command line](https://stackoverflow.com/questions/10819469/hide-input-on-command-line) — OH GOD SPIDERS, Oct 24 '18 at 16:18
`Scanner` doesnt support this functionality. If you can't use `Console` then youre out of luck — Reimeus, Oct 24 '18 at 16:18
@sgrillon - read the answers he linked to, please. :) The accepted answer isn't always the most applicable. — Zephyr, Oct 24 '18 at 16:25
My question is "is it possible to overide Scanner or use a other mask system?" — Stéphane GRILLON, Oct 24 '18 at 16:25
is it write not? `CAUTION: I need not use java.io.Console solution` — Stéphane GRILLON, Oct 24 '18 at 16:27
This is probably the specific answer you are looking for. You could create a PasswordScanner which would extend Scanner. https://stackoverflow.com/a/10819532/1787434 — the_storyteller, Oct 24 '18 at 16:31
thanks @the_storyteller, is it a solution. Other people do not have any response so juste downvote too quickly — Stéphane GRILLON, Oct 24 '18 at 16:40
@sgrillon - I'm not going to argue with you. Your question was unclear. You edited it after the fact. Either review the [ask] article and learn how to write better questions, or just accept the help people are trying to give you. — Zephyr, Oct 24 '18 at 17:00

score 0 · Answer 1 · answered Oct 24 '18 at 16:28

0

If you are looking to do this within an IDE, your best bet is using a JPasswordField. Although this is a GUI solution, it solves the problem without having to use java.io.Console.

answered Oct 24 '18 at 16:28

Ryan Walden

167
10

1

console is not GUI. – Stéphane GRILLON Oct 24 '18 at 16:35

how to hide password with java.util.Scanner (no java.io.Console)

1 Answers1