public class Jpanel01 extends JPanel implements KeyListener, ActionListener {
Random random=new Random();
int length;
int [] X=new int[550];
int [] Y=new int[550];
int x;
int y;
boolean isstart=false;
Timer timer=new Timer(this,100);//这个位置报错啊
public void nn(){
length=3;
X[0]=100;Y[0]=25;
X[1]=75;Y[1]=25;
X[2]=50;Y[2]=25;
}
public Jpanel01() {
nn();
this.setFocusable(true);
this.addKeyListener(this);
timer.start();
}
@Override//画板
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.fillRect(0, 0, 520, 480);
for (int i=0;i<length;i++){
Data.tubiao.paintIcon(this,g,X[i],Y[i]);
}
repaint();
}
public static void main(String[] args) {
}
@Override
public void keyPressed(KeyEvent e) {
int key=e.getKeyCode();
if(key==KeyEvent.VK_SPACE){
isstart=!isstart;
System.out.println(isstart);
}
repaint();
}
@Override//事件监听
public void actionPerformed(ActionEvent e) {
if(isstart){
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
for(int i=length-1;i>0;i++){
X[i]=X[i-1];
Y[i]=Y[i-1];
}
X[0]=X[0]+25;
Y[0]=Y[0]+25;
}
},100,100);
System.out.println(isstart);
repaint();
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
