jave下载 java java jave

{g.drawRect(x-8,y-8,16,16);}

}

public void mousePressed(MouseEvent e){

x=e.getX();

y=e.getY();

if (e.getModifiers()==MouseEvent.BUTTON1_MASK) //判断单击左键 State=1;

else if (e.getModifiers()==MouseEvent.BUTTON3_MASK) //判断单击右键 State=2;

repaint();

}

public void mouseClicked(MouseEvent e){ }

public void mouseEntered(MouseEvent e){ }

public void mouseExited(MouseEvent e){ }

public void mouseReleased(MouseEvent e){ }

public void update(Graphics g) // 保留上一次画图状态

{if (State==1 || State==2)

paint(g);

else

super.update(g);

}}

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