java奇怪的异常，我无法解决

Question

import javax.swing.*;
import java.awt.*;
import java.awt.font.*;

public class test {
    int y = (60 * 40);
    public static JLabel timer = new JLabel("");

    public test() {
        JFrame frame = new JFrame("timer");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(timer);
        frame.setSize(1000, 500);
        frame.setVisible(true);
        frame.setForeground(Color.black);
        timer.setFont(new Font("Calibri", Font.BOLD, 100));
        timer.setForeground(Color.WHITE);
    }

    public static void main(String args[]) {

        SwingUtilities.invokeAndWait(new Runnable() { //line 29
            public void run() {
                test2 it = new test2();
                Thread wasd = new Thread(it);
                new test();
                wasd.start();
            }
        });
    }
}

出于某种奇怪的原因，编译器说第29行需要一个try/catch块，但每次我尝试时。。。。它失败了。花括号拒绝与我合作，最终导致解析错误，因为它跳过了我在其中放入的try块。我不知道该怎么办

Answer 1

public test() {
    JFrame frame = new JFrame("timer");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(timer);
    frame.setSize(1000, 500);
    frame.setVisible(true);
    frame.setForeground(Color.black);
    timer.setFont(new Font("Calibri", Font.BOLD, 100));
    timer.setForeground(Color.WHITE);
}

public static void main(String args[]) {
    try {
        SwingUtilities.invokeAndWait(new Runnable() {

            public void run() {
                test it = new test();
                Thread wasd = new Thread();
                new test();
                wasd.start();
            }

        });
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

}