Right now JPasswordField can be made to echo a single character on press of key
This is being configured by user using setEchoChar API of JPasswordField.
It can be good if following support can be added:
- Support in setEchoChar for null character. Ideally if user set null character, he expects no
  echo char, so that nothing is displayed when he type on passwordfield i.e something like solaris
  login screen. But right now if user call
  setEchoChar('\u0000');//Null character
  than JPasswordField will display whatever user types as such.
- JPasswordField should be able to display more than one echo characters at press of one key event.
  i.e instead of echo char, I should be able to have echo String.
- JPasswordField should be able to display echo string with random characters in it.
  Say following will be process of typing password 'abc'
  a === ***
  b === *****
  c === ***********
  This kind of feature can be used by application which are highly secure but still many people maybe
  looking at your screen when you using it, and this overcomes the problem if there is no echo character
  which confuses user on press of backspace. This is widely used and liked feature, you can see it
  working in application like IBM Lotus notes.
One advantage of all the above points is that someone looking at screen will not be able to guess
password length easily, which can be dangerous mainly incases where password is numeric(PIN) and of
small length.

###@###.### 2004-03-12