mine.java

java练习程序

//下面的例子根据鼠标按下的位置来处理事件。
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class  Mine extends Applet implements MouseListener
{
	double x,y;
	public void init()
	{
		x=-1;y=-1;
		addMouseListener(this);
	}
	
	public void paint(Graphics g)
	{
		if(x!=-1&&y!=-1 &&x>=80)
		{
			g.setColor(Color.blue);
			g.drawOval((int)x,(int)y,10,10);
		}
		else if(x!=-1&&y!=-1&& x<80&&x>40)
		{
			g.setColor(Color.red);
			g.drawString("小心地雷",(int)x+5,(int)y+5);
			g.drawString("往右走",(int)x+5,(int)y+15);
		}
		else if (x!=-1&&y!=-1&& x<=40)
		{
			g.setColor(Color.red);
			g.drawString("地雷爆炸",(int)x+15,(int)y+5);
			g.fillOval((int)x,(int)y,20,20);
		}
	}
	
	public void mousePressed(MouseEvent e)
	{
		x=e.getX();y=e.getY();
		repaint();
	}
	
	public void mouseReleased(MouseEvent e)
	{}
	public void mouseEntered(MouseEvent e)
	{}
	public void mouseExited(MouseEvent e)
	{}
	public void mouseClicked(MouseEvent e)
	{}
}