Java开发网 - [求助]郁闷ing(cannot resolve symbol)

Topic: [求助]郁闷ing(cannot resolve symbol)

1.[求助]郁闷ing(cannot resolve symbol)

Posted by: 火山一角
Posted on: 2005-10-06 10:19

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Original subject : [求助]郁闷ing

各位大虾帮忙看一下,以下是我从课本上抄写的一个小程序

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

没有想到在运行时居然出了错误. Sad

2.Re:[求助]郁闷ing [Re: 火山一角]	Copy to clipboard
Posted by: andykid Posted on: 2005-10-06 10:28 public Strings s; 改成public String s;试试？

3.Re:[求助]郁闷ing [Re: 火山一角]	Copy to clipboard
Posted by: 火山一角 Posted on: 2005-10-06 11:06 改了,运行能够通过,编译不能成功.系统出现如下提示: 200kb bmp file removed -- in fact, the file doesn't have the extension bmp Please cut and paste the message from the Command Prompt window rather than posting an image.

4.Re:[求助]郁闷ing [Re: 火山一角]	Copy to clipboard
Posted by: truthawp Posted on: 2005-10-06 18:48 HTML文档没写,这是APPLET哦

5.Re:[求助]郁闷ing(cannot resolve symbol) [Re: 火山一角]	Copy to clipboard
Posted by: 火山一角 Posted on: 2005-10-06 21:24 写好了,而且就放在同一个文件夹下.内容如下: <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>

6.Re:[求助]郁闷ing(cannot resolve symbol) [Re: 火山一角]

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Posted by: YuLimin
Posted on: 2005-10-06 22:49

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