nl.nikhef.slcshttps.util
Class PasswordReader

java.lang.Object
  nl.nikhef.slcshttps.util.PasswordReader

All Implemented Interfaces:

Runnable

public class PasswordReader
extends Object
implements Runnable

PasswordReader reads a password and masks the typed inputs, only needed when we use JDK1.5, for 1.6 use java.io.Console.readPassword(). Taken over from Valery Tschopp's org.glite.slcs.ui package, removing main() method. See also the article: Password Masking in the Java Programming Language.

Version:

Revision: 1.2

Author:

Valery Tschopp , Mischa Sallé

See Also:

ConsoleTools.getPassword(String)

Field Summary

private char	echochar Character to use for masking.
private boolean	masking Indicate whether characters are masked.

Constructor Summary

private

PasswordReader(String prompt) Constructs a PasswordReader using the given prompt.

Method Summary

static char[]	getPassword(InputStream in, String prompt) Obtains a password from given InputStream.
void	run() Begin masking until asked to stop.
private void	setEchoChar(char c) Sets the char to replace input (mask).
private void	stopMasking() Instruct the thread to stop masking.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

masking

private volatile boolean masking

Indicate whether characters are masked.

echochar

private char echochar

Character to use for masking.

Constructor Detail

PasswordReader

private PasswordReader(String prompt)

Constructs a PasswordReader using the given prompt.

Parameters:

prompt - String displayed to the user.

Method Detail

getPassword

public static final char[] getPassword(InputStream in,
                                       String prompt)
                                throws IOException

Obtains a password from given InputStream.

Parameters:

in - InputStream to read from

prompt - String to print first

Returns:

char[] containing the password

Throws:

IOException - upon error

run

public void run()

Begin masking until asked to stop.

Specified by:

run in interface Runnable

stopMasking

private void stopMasking()

Instruct the thread to stop masking.

setEchoChar

private void setEchoChar(char c)

Sets the char to replace input (mask).

Parameters:

c - character for masking.