Question

问题1:

我试图确定我ton子的大小,但似乎并没有改变,而是总是要填满我所希望的 t。

Problem 2:

当我用我的电文补充公开无效的行动(行动)时,似乎没有显示。也许,这只是因为填满整个空间的纽子,但我不知道。

Here is the code for the buttons:

import java.awt.event.*;

import javax.swing.*;
import java.awt.*;
   public class HockeyGame extends JFrame implements 
      ActionListener, KeyListener, Runnable, WindowListener  //, ActionListener
        {
        Thread t;
        int xpuck, ypuck,xspeed,yspeed,gx,gy,redx2,redy2,lg,rg, redscore, bluescore,
            redx,redy, gx2, gy2, bluex, bluey,bluex2,bluey2,rg2,lg2;
        //int SQUARE_SIZE=10;
        public HockeyGame ( ) {

            }

        public static void main ( String [ ] commandLine ) {
            HockeyGame hg=new HockeyGame();
            hg.init();
        }

        public void actionPerformed1(ActionEvent e) {
            JOptionPane.showMessageDialog(null,"testing");
        }
        public void init() {
            Button b;           
            b = new Button("Click me");
            b.addActionListener(this); 
            b.setSize(40, 40);
            add(b);
            t=new Thread(this);
            this.addKeyListener(this);
            this.setFocusable(true);
            setSize(700,700);
            setVisible ( true );

Any help is appreciatedasd

Answer 1

Start with simple exercises to make you strong in the basics.

(1) 你的布顿填补了这个空间,因为你的内容铺设的落空是边界。规定流放的布局。

2) The function name should be exactly the same as that defined in Action Listener.


public void actionPerformed(ActionEvent e)
{}

我所说的话,在你坚实基础之前,不会有任何意义。

友情链接