datacanvas.java

来自「用JAVA APPLET开发的小游戏,介绍了鼠标和键盘的事件响应,是初学JAVA」· Java 代码 · 共 26 行

import java.awt.*;

public class datacanvas extends Canvas
{   int num=0,eatnum=0;
    Font f=new Font("123",Font.BOLD,12);
    
    datacanvas()
    {   setFont(f);
    }
    
    public void setmessage(int a,int b)
    {   num=a;
        eatnum=b;
        repaint();
    }
    
    public void paint(Graphics g)
    { //  g.drawRect(0,0,getWidth()-1,getHeight()-1); 
        g.drawString("Numbering...",1,10);
        g.drawString("Creating balls:"+(num+eatnum),1,30);
        g.drawString("Showing balls:"+num,1,50);
        g.drawString("eating balls:"+eatnum,1,70);

        
    }
}