Hide password on command line

Dear everybody,
I would like to find a way to hide password on command line when user type password. There is a way that use another thread to output '\b*'. However, it has some bugs. And I can't use Console class which has a method to hide password. Because my JDK is 1.5 and I can't change it because of some reasons.
Does anybody know a way to hide password on command line?
Thanks very much!

Because my JDK is 1.5 and I can't change it because of some reasons.Look how sweet Console is in 1.6:
import java.io.Console;
public class ConsoleExample {
    public static void main(String[] args) {
        Console console = System.console();
        char[] password = console.readPassword("Please enter password:");
        //don't do this: passwords shouldn't be stringified
        String s = new String(password);
        console.format("password =[%s]%n", s);
}Find a way to install 1.6! We believe in you!

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