JPasswordField problem

[JTan]

Hi all,

I am wondering how should I retrieve the password which the user inputs to enter the program?

My interface consists of a JPasswordField. I have tried to use the following codes but it only returns me absurd string when I was doing testing.

Pls kindly advise.

String results = (String)rs.getObject(1);

if (jPasswordField.getPassword().toString().compareTo(results) == 0 )
{
hide();
Main main = new Main();
main.show();
}else {
txtresults.setText(jPasswordField.getPassword().toString());
//txtresults.setText("Incorrect User ID/password! Please try again.");
}

 

[timw]

That's because the getPassword() method returns a char[], not a String. When you do a toString() on this array, you're getting an object reference converted to a String, hence the weird output.

Try this:-

if (new String(jPasswordField.getPassword()).compareTo(results) == 0 )

It's not tidy, but it should get you moving again...

Tim

 

[timw]

...also, what's going on with your first line? Is rs a ResultSet? If so, do this:-

String results = rs.getString(1);

instead.

As a parting shot, there are security implications with handling the passwords as Strings (the getText() methods of JPasswordField have been deprecated because of this). I'm assuming this is to do the JVM caching the Strings and that the correct method is to use array comparison instead, maybe with the java.util.Arrays.equals() method.

Can anyone elaborate on this issue, maybe?

Tim