Question

java中错误：需要class,interface或enum;import java.

* 功能:坦克大战4.0

*/

package com.tankgame4;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.util.Vector;

import java.io.*;

import javax.swing.*;

import javax.imageio.*;

public class MyTankGame4 extends JFrame implements ActionListener{

MyPanel mp=null;

MyStartPanel msp=null;

//菜单定义

JMenuBar jmb=null;

JMenu jm1=null;

JMenuItem jmi1=null;

public static void main(String[] args) {

// TODO Auto-generated method stub

MyTankGame4 mtg=new MyTankGame4();

}

//构造函数

public MyTankGame4()

{

//创建菜单

jmb=new JMenuBar();

jm1=new JMenu("Game(G)");

jm1.setMnemonic('G');

jmi1=new JMenuItem("New Game(N)");

jmi1.setMnemonic('N');

jmi1.addActionListener(this);

jmi1.setActionCommand("New Game");

jm1.add(jmi1);

jmb.add(jm1);

this.setJMenuBar(jmb);

msp=new MyStartPanel();

Thread st=new Thread(msp);

st.start();

this.add(msp);

this.setTitle("坦克大战");

this.setSize(400, 300);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

public void actionPerformed(ActionEvent arg0) {

if(arg0.getActionCommand().equals("New Game"))

{

this.remove(msp);

mp=new MyPanel();

Thread mt=new Thread(mp);

mt.start();

this.add(mp);

this.addKeyListener(mp);

this.setVisible(true);

}

}

}

Answer 1

MyPanel
MyStartPanel
这个代码里这两个类或接口的实现类没有啊