Java开发网 - 一个运行Applet的错误

Topic: 一个运行Applet的错误

1.一个运行Applet的错误	Copy to clipboard
Posted by: 流水野云 Posted on: 2005-10-06 21:26 我在运行APPLET时提示以下错误：载入：找不到AppletInOut.class 其实我已经生成了AppletInOut.class在我的专门装Java程序的文件夹里！D:\java\AppletInOut.class 请各路高手指点迷津！！！

2.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: YuLimin Posted on: 2005-10-06 22:50 JVM的版本是什么？编译时用javac -target 1.1 AppletInOut.java

3.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: 流水野云 Posted on: 2005-10-07 02:02 还是不行，提示：不能找到该文件！can't read target1.1appletinout.java 我用的版本是J2sdk1.4.2_05的！

4.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: billchang Posted on: 2005-10-07 09:37 是不是classpath设的不对，在Applet中有没有package语句？我没遇到过你这样的错误，我只遇到过applet无法运行的错误，希望能帮你。

5.Re:一个运行Applet的错误 [Re: 流水野云]

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Posted by: YuLimin
Posted on: 2005-10-07 10:43

1、My.java文件内容：


import java.awt.Graphics;
import java.applet.Applet;
public class My extends Applet
{
public String s;
public void init()
{
s=new String("Hello World");
}
public void paint(Graphics g)
{
g.drawString(s,25,25);
}
}

2、编译时加上开关条件
javac -target 1.1 My.java

3、My.html
<HTML>
<HEAD>
<TITLE>我的第一个Applet程序</TITLE>
</HEAD>
<BODY>
<APPLET CODE="My.class" WIDTH=200 HEIGHT=100>
</APPLET>
</BODY>
</HTML>

4、查看效果AppletViewer My.html

6.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: 流水野云 Posted on: 2005-10-07 17:08 实在是没办法了！请问到底那个classpath怎么设啊？是设为生成的.class文件的路径：.;D:\java;D:\java\classes 还是设为安装路径：.;C:\j2sdk1.4.2_05\lib\dt.jar;C:\j2sdk1.4.2_05\lib\tools.jar 请各路高手指点迷津！！！！！！

7.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: why Posted on: 2005-10-07 20:42 DON'T double-post! DON'T!!! http://www.cjsdn.net/post/view?bid=1&id=158325 is locked and will be removed!

8.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: 流水野云 Posted on: 2005-10-07 22:31 Excuse me,what means about the double-post?

9.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: why Posted on: 2005-10-07 23:42 流水野云 wrote: Excuse me,what means about the double-post? 一帖兩發　以至　一帖多發 i.e. this post is almost the same as http://www.cjsdn.net/post/view?bid=1&id=158325

10.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: billchang Posted on: 2005-10-08 20:49 流水野云你可以把你的代码粘上来让大家看看，也许会对你有帮助。

11.Re:一个运行Applet的错误 [Re: 流水野云]

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Posted by: 流水野云
Posted on: 2005-10-08 22:54

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class AppletInOut extends Applet implements ActionListener
{
Label prompt;
TextField input, output;

public void init(){
prompt = new Label("Please input your name:");
input = new TextField(6);
output = new TextField(20);
add(prompt);
add(input);
add(output);
input.addActionListener(this);
}

public void actionPerformed(ActionEvent e){

output.setText(input.getText() + ",Welcome to you! ");

}

}

HTML是：
<HTML>
<HEAD>
<TITLE> AN Applet </TITLE>
</HEAD>
<APPLET CODE = " AppletInOut.class " width = 300 height = 160>
</APPLET>
</BODY>
</HTML>
请大家帮帮忙！谢谢了！

12.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: verwa Posted on: 2005-10-08 23:25 在这行加（）就ok！ input = new TextField(); 163kB bmp file removed, please DON'T use bmp file. In addition, check "Embed (only JPG, GIF and PNG images,SWF flash file)" to show image.

13.Re:一个运行Applet的错误 [Re: 流水野云]	Copy to clipboard
Posted by: verwa Posted on: 2005-10-09 23:37 不好意思，没注意图片格式。