为什么我的程序连事件处理方法都进不了？
代码很长，不过基本都没啥问题，就是为啥keypress（KeyEvent e）执行不了呢？，经检测程序根本就不进去，这是为什么呢？监听器注册，事件源，监听对象和监听方法都有了啊，请高手指教下
这程序我都写了好几遍了，每次都有各种问题
//主函数
package practise;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MyTank extends JFrame
{
private Mypanel mp;
private JMenuBar jmb;
private JMenu jm_1;
//开始
private JMenuItem jmi_1;
//暂停
private JMenuItem jmi_2;
//保存
private JMenuItem jmi_3;
//退出
private JMenuItem jmi_4;
//工具条
private JToolBar jt;
//按钮
JButton jb1;
JButton jb2;
public static void main(String[] args)
{
MyTank mt = new MyTank();
}
private MyTank()
{
final int width = 400;
final int height = 300;
// 初始化面板
mp = new Mypanel();
this.setContentPane(mp);
this.addKeyListener(mp);
mp.setLayout(new BorderLayout());
mp.setBackground(Color.black);
//初始化菜单栏
jmb = new JMenuBar();
this.setJMenuBar(jmb);
//一级菜单
jm_1 = new JMenu("菜单");
jmb.add(jm_1);
//二级菜单
jmi_1 = new JMenuItem("开始");
jmi_2 = new JMenuItem("暂停");
jm_1.addSeparator();
jmi_3 = new JMenuItem("保存");
jmi_4 = new JMenuItem("退出");
jm_1.add(jmi_1);
jm_1.add(jmi_2);
jm_1.add(jmi_3);
jm_1.add(jmi_4);
//工具栏
jt = new JToolBar();
mp.add(jt,BorderLayout.NORTH);
jb1 = new JButton("开始");
jb2 = new JButton("暂停");
jt.add(jb1);
jt.add(jb2);
//定义框架属性
this.setVisible(true);
Toolkit kit = Toolkit.getDefaultToolkit();
Dimension screensize = kit.getScreenSize();
int screenwidth = screensize.width;
int screenheight = screensize.height;
int x = (screenwidth-width)/2;
int y = (screenheight-height)/2;
this.setBounds(x,y,width,height);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
我的面板
package practise;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Mypanel extends JPanel implements KeyListener
{
//定义英雄坦克
Hero hero;
public Mypanel()
{
hero = new Hero(5,88);
}
//重写绘画函数
public void paint(Graphics g)
{
super.paint(g);
paintTank(hero.x,hero.y,g,hero.direct,hero.type);
}
private void paintTank(int x, int y, Graphics g, int direct,int type)
{
if(type == 1)
{
g.setColor(Color.yellow);
switch(direct)
{
//up
case 0:
g.fill3DRect(x, y, 5, 30, false);
g.fill3DRect(x+5, y+5, 10, 20, false);
g.fill3DRect(x+15, y, 5, 30, false);
g.fillOval(x+4,y+10,10,10);
g.drawLine(x+9,y+15,x+9,y-4);
break;
//right
case 1:
g.fill3DRect(x, y,30,5,false);
g.fill3DRect(x+5,y+5,20,10,false);
g.fill3DRect(x,y+15,30,5,false);
g.fillOval(x+10,y+5,10,10);
g.drawLine(x+15,y+10,x+34,y+10);
break;
//down
case 2:
g.fill3DRect(x, y,5,30,false);
g.fill3DRect(x+5,y+5,10,20,false);
g.fill3DRect(x+15,y,5,30,false);
g.fillOval(x+4,y+10,10,10);
g.drawLine(x+9,y+15,x+9,y+34);
break;
//left
case 3:
g.fill3DRect(x, y,30,5,false);
g.fill3DRect(x+5,y+5,20,10,false);
g.fill3DRect(x,y+15,30,5,false);
g.fillOval(x+10,y+5,10,10);
g.drawLine(x+15,y+10,x-4,y+10);
break;
}
}
else if(type == 2)
{
g.setColor(Color.red);
switch(direct)
{
//up
case 0:
g.fill3DRect(x, y, 5, 30, false);
g.fill3DRect(x+5, y+5, 10, 20, false);
g.fill3DRect(x+15, y, 5, 30, false);
g.fillOval(x+4,y+10,10,10);
g.drawLine(x+9,y+15,x+9,y-4);
break;
//right
case 1:
g.fill3DRect(x, y,30,5,false);
g.fill3DRect(x+5,y+5,20,10,false);
g.fill3DRect(x,y+15,30,5,false);
g.fillOval(x+10,y+5,10,10);
g.drawLine(x+15,y+10,x+34,y+10);
break;
//down
case 2:
g.fill3DRect(x, y,5,30,false);
g.fill3DRect(x+5,y+5,10,20,false);
g.fill3DRect(x+15,y,5,30,false);
g.fillOval(x+4,y+10,10,10);
g.drawLine(x+9,y+15,x+9,y+34);
break;
//left
case 3:
g.fill3DRect(x, y,30,5,false);
g.fill3DRect(x+5,y+5,20,10,false);
g.fill3DRect(x,y+15,30,5,false);
g.fillOval(x+10,y+5,10,10);
g.drawLine(x+15,y+10,x-4,y+10);
break;
}
}
}
@Override
public void keyPressed(KeyEvent e)
{
switch(e.getKeyCode())
{
case KeyEvent.VK_W:
hero.setDirect(0);
hero.moveUp();
break;
case KeyEvent.VK_D:
hero.setDirect(1);
hero.moveRight();
break;
case KeyEvent.VK_S:
hero.setDirect(2);
hero.moveDown();
break;
case KeyEvent.VK_A:
hero.setDirect(3);
hero.moveLeft();
break;
}
this.repaint();
}
@Override
public void keyReleased(KeyEvent e)
{
// TODO Auto-generated method stub
}
@Override
public void keyTyped(KeyEvent e)
{
// TODO Auto-generated method stub
}
}
成员
package practise;
//定义坦克父类
class Tank
{
int x, y,speed = 1,direct = 0,type = 1;
boolean isalive = true;
public Tank(int x, int y)
{
this.x = x;
this.y = y;
}
public int getX()
{
return x;
}
public void setX(int x)
{
this.x = x;
}
public int getY()
{
return y;
}
public void setY(int y)
{
this.y = y;
}
public int getSpeed()
{
return speed;
}
public void setSpeed(int speed)
{
this.speed = speed;
}
public int getDirect()
{
return direct;
}
public void setDirect(int direct)
{
this.direct = direct;
}
public boolean isIsalive()
{
return isalive;
}
public void setIsalive(boolean isalive)
{
this.isalive = isalive;
}
//坦克移动
//up
public void moveUp()
{
y-=this.speed;
}
public void moveRight()
{
x+=this.speed;
}
public void moveDown()
{
y+=this.speed;
}
public void moveLeft()
{
y-=this.speed;
}
}
class Hero extends Tank
{
public Hero(int x, int y)
{
super(x,y);
}
}
class Enermy extends Tank
{
public Enermy(int x, int y)
{
super(x, y);
}
}
