Question

求高手帮忙，把 JAVA applet小程序改写为应用程序，急求！！！

求高手帮忙，把 JAVA applet小程序改写为应用程序，急求！！！import java.applet.Applet;
import java.awt.Graphics;
class Dogs
{
public String name,
public int weight;
public int height;
}
public void showDog(Graphics g,int x,int y)
{
g.drawString("Namc:"+name,x,y)
g.drawString("Weight:"+weight,x,y+20);
g.drawString("Height:" theight,x,y+40);
}
public class C4_2 extends Applet
{
public void paint(Graphics g).
{
Dogs dane;
dane= new Dogs();
Dogs setter=new Dogs();
dane.name="Gread Dane";
dane.weight=100;
dane.height=23;
setter.name="Irish Setter";
setter.weight=20;
setter.height=30;
dane.showDog(g,25,25);
setter.showDog(g,25.120);
}
}

Answer 1

你的Java applet程序我帮你改成Java应用程序了,你看看吧.(改动的地方见注释)

import java.awt.Graphics;
import javax.swing.JFrame;//这里把import java.applet.Applet;改成import javax.swing.JFrame;
class Dogs
{
 public String name;//这里句尾逗号改成分号
 public int weight;
 public int height;
public void showDog(Graphics g,int x,int y)
{
 g.drawString("Namc:"+name,x,y); //这里句尾加分号
 g.drawString("Weight:"+weight,x,y+20); 
 g.drawString("Height:"+height,x,y+40); //这里"Height:" theight改成"Height:"+height
}
}//这里大括号移到这里
public class C4_2 extends JFrame //这里继承JFrame
{
C4_2(){                //这里加构造函数
 setSize(400, 400);
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 setLocationRelativeTo(null);
 setVisible(true);
}
public static void main(String[] args)//这里加主函数
{
 C4_2 c=new C4_2();
}
 public void paint(Graphics g)//这里去掉末尾的英文句号(点.)
 {
 super.paint(g); //这里加一句因为重写paint方法所以需要调用原paint方法
 Dogs dane;
 dane= new Dogs(); 
 Dogs setter=new Dogs(); 
 dane.name="Gread Dane";
 dane.weight=100; 
 dane.height=23;
 setter.name="Irish Setter";
 setter.weight=20; 
 setter.height=30;
 dane.showDog(g,25,25);
 setter.showDog(g,25,120);//这里把setter.showDog(g,25.120);改成setter.showDog(g,25,120);25后面的点改成逗号
 } 
}