获取分配给JButton的Enum值

Question

I Have a class that contains an Enum and a class with a JButton . I am able to set an Enum value to my button, but I can not get my value back – it simply prints out null How should I retrive the value ??

 import javax.swing.JButton;
 import javax.swing.JFrame;

 public class Test extends JFrame {

public Test() {

    MyButton button = new MyButton();
    button.setState(State.CROSS);

    button.getState();
    System.out.println(button.getState());
}

public enum State {

    CROSS

    {

        @Override
        public String toString() {

            return "X";
        }
    },
}

class MyButton extends JButton {
    State state;

    public State getState() {
        return state;
    }

    public void setState(State state) {
    }
}

public static void main(String[] args) {
    Test v = new Test();
}

}

Answer 1

Your setState() does nothing, change it to:

public void setState(State state) {
        this.state = state;
    }