ex3

不知道对错

import java.util.concurrent.TimeUnit;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.SwingUtilities;public class ex3 {    public static void main(String[] args) throws Exception {        JLabel label =new JLabel("a label");        JFrame frame=new JFrame();        frame.add(label);        SwingConsole sc ;        sc = new SwingConsole();        SwingUtilities.invokeLater(new Runnable() {            public void run(){                sc.run(frame, 300, 100);            }        });        TimeUnit.SECONDS.sleep(1);        SwingUtilities.invokeLater(new Runnable(){            public void run(){                label.setText("hahaha");            }        });    }}