blocks|key|319767|text|每次启动命令外壳时，在命令外壳中输入SET+PATH命令可能很快就会变得陈旧。三种替代方案：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|319768|319769|从批处理(.CMD)文件运行javac。然后，您可以在执行javac之前将SET+PATH放入该文件中。或者，如果您只是在系统的“环境变量”配置中编写javac.exe|ordered-list-item|319770|Set增强的、改进的SET+PATH的显式路径，那么您也可以不使用PATH。但这首先需要对PATH进行另一次扩展，这会让我们回到(1)和(2)。|319771|319772|entityMap^0|I|8|0|0|5|4|T|5|11|8|23|9|0|A|8|X|4|19|4|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|R|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|J|3|K|5|I|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|18|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|N|$]]

Typing the <code>SET PATH</code> command into the command shell every time you fire it up could get old for you pretty fast. Three alternatives:

<ol>
<li>Run javac from a batch (<code>.CMD</code>) file. Then you can just put the <code>SET PATH</code> into that file before your <code>javac</code> execution. Or you could do without the <code>SET PATH</code> if you simply code the explicit path to <code>javac.exe</code></li>
<li>Set your enhanced, improved <code>PATH</code> in the "environment variables" configuration of your system.</li>
<li>In the long run you'll want to automate your Java compiling with <a href="http://ant.apache.org/manual/index.html" rel="nofollow noreferrer">Ant</a>. But that will require yet another extension to <code>PATH</code> first, which brings us back to (1) and (2).</li>
</ol>

blocks|key|317870|text|这将是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317871|set+"PATH=%25PATH%25;C:\Program+Files\Java\jdk1.6.0_18\bin"|code-block|syntax|javascript|317872|也可以在用户环境对话框中将;C:\Program+Files\Java\jdk1.6.0_18\bin附加到路径。这将允许您使用javac和其他java工具直接形成任何cmd+shell，而无需首先设置路径。用户环境对话框过去在XP的系统属性中的某个位置，我不知道它在Windows+7中的什么位置。|offset|length|style|CODE|317873|entityMap^0|0|0|D|12|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

That would be:

<pre><code>set "PATH=%PATH%;C:\Program Files\Java\jdk1.6.0_18\bin"
</code></pre>

You can also append <code>;C:\Program Files\Java\jdk1.6.0_18\bin</code> to the PATH in the user environment dialog. That would allow you to use javac and other java tools directly form any cmd shell without setting the path first. The user environment dialog used to be somewhere in the system properties in XP, I have no idea where it is in Windows 7.

blocks|key|322807|text|步骤1:将PATH变量JAVA_HOME设置为系统上存在的JDK的路径。步骤2:在Path变量中，添加C:\Program+Files\Java\jdk(version)\bin的路径|type|unstyled|depth|inlineStyleRanges|entityRanges|data|322808|这应该可以解决问题。编码快乐！！|322809|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Step 1: Set the PATH variable JAVA_HOME to the path of the JDK present on the system.
Step 2: in the Path variable add the path of the C:\Program Files\Java\jdk(version)\bin

This should solve the problem.
Happy coding!!

blocks|key|322772|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|322773|键入cmd+in+program+start|ordered-list-item|offset|length|style|CODE|322774|Copy+and+Paste+following+on+dos+prompt|322775|322776|322777|设置PATH="%25PATH%25;C:\Program+Files\Java\jdk1.6.0_18\bin"|blockquote|322778|322779|entityMap^0|0|2|3|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|R|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|S|7|@$D|T|E|U|F|G]]|8|@]|9|$]]|$1|H|3|I|4|C|6|V|7|@]|8|@]|9|$]]|$1|J|3|-4|4|5|6|W|7|@]|8|@]|9|$]]|$1|K|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|L|3|M|4|N|6|Y|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|Z|7|@]|8|@]|9|$]]|$1|P|3|-4|4|5|6|10|7|@]|8|@]|9|$]]]|Q|$]]

<ol>
<li>Type <code>cmd</code> in program start</li>
<li>Copy and Paste following on dos prompt</li>
</ol>

<blockquote>
 set PATH="%PATH%;C:\Program Files\Java\jdk1.6.0_18\bin"
</blockquote>

blocks|key|3068687|text|按照这里给出的步骤进行操作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3068688|http://www.javaandme.com/|offset|length|3068689|设置变量后，只需导航到cmd中的java文件目录，然后键入javac+"xyx.java“。|3068690|或者，如果您没有导航到该目录，则只需指定java文件的完整路径|3068691|javac+"/xyz.java“|3068692|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|P|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|Z|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|C]]]]

Follow the steps given here

<a href="http://www.javaandme.com/" rel="nofollow">http://www.javaandme.com/</a>

after setting variable, just navigate to your java file directory in your cmd and type 
javac "xyx.java"

or if you don't navigate to the directory, then simply specify the full path of java file

javac "/xyz.java"

blocks|key|3281767|text|我想要回答的第一个问题是：“为什么我们需要设置路径？”|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3281768|回答:你需要设置路径来编译Java源代码，创建JAVA类文件，并允许操作系统在运行时加载类。|3281769|现在，您将理解为什么在设置了"javac“之后，只需输入"Class_name.java"就可以手动编译。|3281770|修改Windows环境变量的PATH，方法是将所有exe文件(例如，.java、javac)都存在。|3281771|示例:+;C:\Program+Files\javajre7bin。|3281772|entityMap^0|E|C|0|0|3|0|F|5|S|H|0|0|1E|0|0|Y|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|O|$]]

First thing I wann ans to this imp question: "Why we require PATH To be set?"

Answer : You need to set PATH to compile Java source code, create JAVA CLASS FILES and allow Operating System to load classes at runtime.

Now you will understand why after setting "javac" you can manually compile by just saying
"Class_name.java" 

Modify the PATH of Windows Environmental Variable by appending the location till bin directory where all exe file(for eg. java,javac) are present.

Example : ;C:\Program Files\Java\jre7\bin.

blocks|key|317986|text|只有这样才行得通：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317987|程序路径%25；C：\+path=%25set+Files\Java\jdk1.7.0_04\bin|317988|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

only this will work:

path=%set path%;C:\Program Files\Java\jdk1.7.0_04\bin

blocks|key|3281725|text|您不需要执行任何复杂的命令行操作或编辑任何系统代码。你只需要打开电脑，显示你所有的磁盘和打开的属性。从那里，转到高级系统设置，然后单击环境变量。在下方的列表框中向下滚动并编辑路径。不要删除任何已经存在的内容。在它后面加上一个；，然后输入您的路径。为了测试，打开命令提示符并执行"javac"，它应该列出大约20个程序。在这一点上你就完成了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3281726|顺便说一句，要编译的命令不仅仅是javac，还应该是javac+-g。|offset|length|style|CODE|3281727|祝你编码愉快！|3281728|entityMap^0|0|G|5|Q|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]|$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

You don't need to do any complex command-line stuff or edit any system code.
You simply have to open Computer, showing all of your disks and open properties.
From there, go to Advanced System Settings and click Environment Variables.
Scroll down in the lower list box and edit Path.
Do not erase anything already there. Put a ; after it and then type in your path. To test, open command prompt and do "javac", it should list around 20 programs.
You would be finished at that point.

By the way, the command to compile is <code>javac -g</code> not just <code>javac</code>.

Happy coding!

blocks|key|322817|text|在Windows10上试用，所有命令行指令都不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|322818|右击“计算机”，然后打开属性等，正如上面Galen+Nare的帖子所解释的那样，将把你带到一个窗口，在那里你需要点击“新建”，然后粘贴路径(如上所述:不删除任何其他内容)。之后，您可以通过在命令行窗口中输入java+-version进行检查，如果一切正常，该窗口将显示您当前的java版本。|322819|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Trying this out on Windows 10, none of the command-line instructions worked. 

Right clicking on "Computer" then open Properties etc. as the post by Galen Nare above already explains, leads you to a window where you need to click on "new" and then paste the path (as said: without deleting anything else). Afterwards you can check by typing java -version in the command-line window, which should display your current java version, if everything worked out right.

Here's the address on my drive:

<blockquote>
 C:\Program Files\Java\jdk1.6.0_18\bin
</blockquote>

How would I go about setting the path variable so I can go in command window (windowskey+r "cmd") and be able to type things like:

<pre><code>javac TestApp.java
</code></pre>

I'm using Windows 7 Professional.

How can I set the PATH variable for javac so I can manually compile my .java works?

这是我硬盘上的地址： C:\Program Files\Java\jdk1.6.0_18\bin如何设置path变量，以便可以进入命令窗口(windowskey+r "cmd")并能够键入以下内容：javac TestApp.java我使用的是Windows 7专业版。

问如何设置javac的PATH变量，以便可以手动编译我的.java works？
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问如何设置javac的PATH变量，以便可以手动编译我的.java works？EN

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问如何设置javac的PATH变量，以便可以手动编译我的.java works？
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