Java开发网 - 关于环境变量的问题

Topic: 关于环境变量的问题

1.关于环境变量的问题

Posted by: soundapple
Posted on: 2006-10-25 10:21

8261669 wrote:
过程如下：
在我的电脑右键的属性里，选择高级－－环境变量
然后就开始设置吧－
首先建个java_home当然这个是变量名，
在变量值输入你安装ＪＤＫ的路径，比如D:\jdk1.5
然后找到PATH变量，系统一般都是有的，如果没有就新建。
在变量值里设置如下内容：%java_home%\bin;%java_home%\jre\bin
最后新建个classpath变量，变量值为：.%java_home%;%java_home%\lib\tools.jar
注意要加点.
表示当前路径……
ＯＫ设置完成
运行ＣＭＤ命令……
在dos窗口中输入java -version
如果运行正常，说明配置ＯＫ了……

按照这个设置环境变量怎么运行不起来?新学java 感觉环境变量是个大问题
请教!!!

2.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-25 10:27 本人装的是jdk-1_5_0_09-windows-i586-p.exe

3.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-25 10:30 619KB BMP --> 8KB GIF

4.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-25 10:38 379KB BMP --> 6KB GIF

5.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-25 11:41 426KB BMP --> 5KB GIF Please don't use BMP in the future

6.Re:关于环境变量的问题 [Re: soundapple]

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Posted by: why
Posted on: 2006-10-25 19:10

>选择高级－－环境变量
I prefer using a cmd file than setting the system configuration

>classpath变量，变量值为：.%java_home%;%java_home%\lib\tools.jar
a ; is missing between . and %java_home%;
actually
CLASSPATH=.
is good enough

You have to compile your .java program first
> javac Test.java

then
> java -cp . Test

to check version
> java -version

7.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-25 21:13 CLASSPATH按楼上说的改了以后出现这个问题 You have to use a program (e.g. Paint) to convert the BMP image to GIF format, saving it as .GIF would not help. Again, you could just copy-n-paste the contents in the windows. I have converted the 575KB GIF.BMP to this 7KB GIF

8.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: why Posted on: 2006-10-26 17:38 1. you don't want to put your .java files under \JDK\bin 2. check whether Test.java is there: >dir Test.java.*

9.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-26 19:38 我的环境变量设置如下: CLASSPATH .;%JAVA_HOME%;%JAVA_HOME%\lib\tools.jar JAVA_HOME D:\JDK\jdk-1_5_0_09 PATH ;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem%JAVA_HOME%\bin;&JAVA_HOME&\jre\bin

10.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: soundapple Posted on: 2006-10-26 19:51 这个设置： PATH ;c:\j2sdk1.4.1_01\bin CLASSPATH .;c:\j2sdk1.4.1_01\lib\dt.jar;c:\j2sdk1.4.1_01\lib\tools.jar JAVA_HOME c:\j2sdk1.4.1_01cd /d D:\ [cd空格/d空格D:\] [ ]中的是什么意思？编译执行时写这个 cd空格/d空格D:\ 然后才是 >javac Test.java >java Test

11.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: iistmr Posted on: 2006-10-27 09:41 大家最好在CLASSPATH中还加一个servlet.jar

12.Re:关于环境变量的问题 [Re: iistmr]	Copy to clipboard
Posted by: why Posted on: 2006-10-27 11:13 iistmr wrote: 大家最好在CLASSPATH中还加一个servlet.jar Why? Where is servlet.jar? Could it be something else? Please ignore this piece of information.

13.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: 8261669 Posted on: 2006-11-01 08:26 最后新建个classpath变量，变量值为：.%java_home%;%java_home%\lib\tools.jar 这个是错误的，应该在点后加分号。如下：.;%java_home%;%java_home%\lib\tools.jar

14.Re:关于环境变量的问题 [Re: iistmr]	Copy to clipboard
Posted by: soundapple Posted on: 2006-11-02 11:48 iistmr wrote: 大家最好在CLASSPATH中还加一个servlet.jar servlet.jar直接加在classpath后面吗? servlet.jar是干什么的?

15.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: zqailc Posted on: 2006-11-10 20:15 刚注册，呵呵新鲜哈以后还要努力哦

16.Re:关于环境变量的问题 [Re: soundapple]	Copy to clipboard
Posted by: Revolution Posted on: 2006-11-19 14:56 直接在PATH后面加上你的JDK安装路径就可以了