The below code attempts to read the password from the system console.
If user doesn't enter a password within 30 seconds, the prompt is shown again. However, I notice that the cursor is not released following the first call
to console.readPassword()
I did try to do console.reader().close(); in the catch block which did not help.
Some context: I'm trying this as a workaround for the following Gradle Issue which overwrites the prompt Enter password:, and users get a feeling as if the application has hanged.
Java experts please advise.
public final class RetryPassword {
public static char [] getPassword() {
Console console = System.console();
Callable<char[]> password = new Callable<char[]>() {
@Override
public char[] call() {
return console.readPassword("Enter password: ");
}
};
final ExecutorService executor = Executors.newSingleThreadExecutor();
final Future<char[]> future = executor.submit(password);
executor.shutdown();
try {
return future.get(30, TimeUnit.SECONDS);
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static void main(String[] args) {
char [] p = getPassword(); // first call to read password
if (p == null) {
p = getPassword(); // try again
}
System.out.println(p);
}
}
