Return a value from asynchronous call to run method

Question

I have a method that has to return a boolean value. The method has an asynchronous call to run method. In the run method, i have to set variable in the enclosing method. bel

Answer 1

You can use the java.util.concurrent.FutureTask if you need to adapt a Callable to a Runnable.

public class UserQuestion implements Callable {

    private String message;
    private String question;

    public UserQuestion(String message, String question) {
        this.message = message;
        this.question = question;
    }

    public Boolean call() throws Exception {
        boolean userAnswer = MessageDialog.openQuestion(new Shell(),
                message, question);
        return Boolean.valueOf(userAnswer);

    }
}

UserQuestion userQuestion = new UserQuestion("some message", "some question?");
FutureTask futureUserAnswer = new FutureTask(userQuestion);
Display.getDefault().asyncExec(futureUserAnswer);
Boolean userAnswer = futureUserAnswer.get();