Q:

How do you reveal the text of a JPasswordField

I'm making a Authentication app in java and i want to add a JRadioButton, where if it is selected it will allow you to see the text in the JPasswordField, i was trying to figure it out and i was just wondering is there any way to do it? 

A:

From the Java-Doc of the setEchoChar() method:

Setting a value of 0 indicates that you wish to see the text as it is typed, similar to the behavior of a standard JTextField. 

So just use:
second.setEchoChar((char)0);

to set and to reset:
second.setEchoChar('\u2022');

The default EchoChar is determined by the Look & Feel.  To be always in harmony with the theme it's the best to save the default EchoChar before changing it the first time:
char originalEchoChar = second.getEchoChar();

