Java中如何运行Applet小程序
超人会飞 2012-06-02 12:30:00 package javaapplication1;
import java.awt.*;
import java.applet.*;
class drawGraphics extends Applet
{
public void paint(Graphics g)
{
for(int i=0;i<6;i++)
showGraphics(i,g);
}
public void showGraphics(int n,Graphics g)
{
g.clearRect(0,0,200,200);
switch(n)
{
case 0:
g.setColor(Color.black);
g.drawLine(30,30,160,160);
break;
case 1:
g.setColor(Color.blue);
g.drawRect(30,30,160,160);
break;
case 2:
g.setColor(Color.darkGray);
g.drawRoundRect(30,30,160,160,20,120);
break;
case 3:
g.setColor(Color.green);
g.drawOval(30,30,160,160);
break;
case 4:
g.setColor(Color.orange);
g.fillOval(30,30,160,160);
break;
case 5:
g.setColor(Color.magenta);
g.draw3DRect(30,30,160,160,true);
break;
}
try{
Thread.sleep(2000);
}catch(InterruptedException e)
{
System.exit(0);
}
}
}
为什么在运行时会出现:类“javaapplication1.JavaApplication1”没有主方法?
还有我是初学者,不知道该如何运行java applet程序?