import java.awt.*;
import java.awt.event.*;public class TankClient extends Frame{ private static int GAME_WIDTH = 800;
private static int GAME_HEIGHT = 600;
public static void main(String[] args) {
new TankClient().launchFrame();
}
Tank myTank = new Tank(50,50);
public void launchFrame(){
Frame f = new Frame();
f.setBounds(222, 120, GAME_WIDTH, GAME_HEIGHT);
f.setBackground(Color.GREEN);
f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
f.setResizable(false);
f.setVisible(true);
}
public void paint(Graphics g) {
g.setColor(Color.GREEN);
g.fillOval(30, 30, 50, 50);
}}
你应该这样写import java.awt.*;
import java.awt.event.*;public class TankClient extends Frame{ private static int GAME_WIDTH = 800;
private static int GAME_HEIGHT = 600;
public static void main(String[] args) {
new TankClient();
}
//Tank myTank = new Tank(50,50);
public TankClient(){
//Frame f = new Frame();
setBounds(222, 120, GAME_WIDTH, GAME_HEIGHT);
setBackground(Color.GREEN);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
setResizable(false);
setVisible(true);
}
public void paint(Graphics g) {
g.setColor(Color.RED);
g.fillOval(30, 30, 50, 50);
}}