blocks|key|649155|text|确保您从Windows\System32文件夹中删除了任何java.exe、javaw.exe和javaws.exe，如果您有x64系统(Win7+64位)，也可以在Windows\SysWOW64下执行相同的操作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|649156|如果在这些位置找不到它们，请尝试从C:\ProgramData\Oracle\Java\javapath中删除它们。|649157|entityMap^0|4|G|T|8|12|9|1C|A|2B|G|0|H|Z|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

Make sure you remove any <code>java.exe</code>, <code>javaw.exe</code> and <code>javaws.exe</code> from your <code>Windows\System32</code> folder and if you have an x64 system (Win 7 64 bits) also do the same under <code>Windows\SysWOW64</code>.

If you can't find them at these locations, try deleting them from <code>C:\ProgramData\Oracle\Java\javapath</code>.

blocks|key|866568|text|我也遇到过类似的问题。我已经安装了JDK7更新1，但无法使用它(可能是因为我发现在安装JDK7之后删除了一个JRE6+)。卸载JDK7是不可能的。解决方案是手动添加JRE注册表项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|866569|[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java+Runtime+Environment]
"CurrentVersion"="1.7"

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java+Runtime+Environment\1.7]
"JavaHome"="C:\\Program+Files\\Java\\jre7"
"RuntimeLib"="C:\\Program+Files\\Java\\jre7\\bin\\client\\jvm.dll"

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java+Runtime+Environment\1.7.0_01]
"JavaHome"="C:\\Program+Files\\Java\\jre7"
"RuntimeLib"="C:\\Program+Files\\Java\\jre7\\bin\\client\\jvm.dll"|code-block|syntax|javascript|866570|你必须根据你自己的目录和版本来调整上面的代码。|866571|如果这还不起作用，还有JavaRa+https://singularlabs.com/software/javara/。|offset|length|866572|entityMap|0|LINK|mutability|MUTABLE|url|https://singularlabs.com/software/javara/^0|0|0|0|I|15|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I had a similar problem. I had installed JDK7 update 1 but couldn't use it (probably because I found a JRE6 that I deleted after installing JDK7). Uninstalling JDK7 was impossible. The solution was to add the JRE registry entries by hand.
<pre><code>[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment]
&quot;CurrentVersion&quot;=&quot;1.7&quot;

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.7]
&quot;JavaHome&quot;=&quot;C:\\Program Files\\Java\\jre7&quot;
&quot;RuntimeLib&quot;=&quot;C:\\Program Files\\Java\\jre7\\bin\\client\\jvm.dll&quot;

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.7.0_01]
&quot;JavaHome&quot;=&quot;C:\\Program Files\\Java\\jre7&quot;
&quot;RuntimeLib&quot;=&quot;C:\\Program Files\\Java\\jre7\\bin\\client\\jvm.dll&quot;
</code></pre>
You'll have to adjust the above to your own directories and version.
If this doesn't help, there's still JavaRa <a href="https://singularlabs.com/software/javara/" rel="nofollow noreferrer">https://singularlabs.com/software/javara/</a> .

blocks|key|649345|text|我本可以将此标记为评论，但不能(没有代表)只是想要感谢Tilman。我试图让PDFsam+(PDF拆分和合并)工作，但没有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|649346|在启动时，它会产生一个错误，声明它找不到JRE+1.6.0。我有32位和64位版本，它们在各自的浏览器中都可以在java网站上正常运行。|649347|已尝试反复卸载/重新安装和重新启动以及使用JavaRa。没有这样的运气，还是没有走。|649348|读完这篇文章后，我查看了注册表，发现没有...\SOFTWARE\JavaSoft\键，所以我添加了各自的字符串值，指向我的x86版本(PDFsam是一个32位程序)。这解决了第一个问题，但是出现了一个关于amd64库的错误，这表明机器想要运行64位版本。因此，我更改了64位JRE的路径，PDFsam现在可以工作了。|649349|仅供参考-在我无法从命令提示符启动javaw.exe+(即使在向系统路径添加了必要的路径之后)之后，我通过搜索Java注册表项找到了这里，进行了前述的更改也解决了这个问题。|649350|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

I would have tagged this as a comment but cant (dont have the rep) just wanted to thank Tilman. I was trying to get PDFsam (PDF Split and Merge) to work to no avail.

At launch it would produce an error stating that it could not find JRE 1.6.0. I Have both 32 and 64 bit versions and they check out fine at the java website in their respective browsers.

Tried uninstalling/reinstalling and rebooting repeatedly as well as using JavaRa. No such luck, still no go.

I looked in the registry after reading this post and there was no ...\SOFTWARE\JavaSoft\ key so I added each with their respective string values pointing to my x86 version (PDFsam is a 32bit program). This got past the first problem but an error popped up about amd64 libraries suggesting the machine wanted to run the 64bit version. So I changed the paths to the 64bit JRE and PDFsam now works. 

FYI - I got here by searching for Java registry keys after I was unable to launch javaw.exe from command prompt (even after adding the requisite paths to system path), making the aforementioned changes solved this as well.

blocks|key|866754|text|卸载Java+(通过控制面板/程序和功能)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|866755|安装Java+JRE7+-->脱机<--配置JAVA_HOME和%25JAVA_HOME%25/bin;%25PATH%25|offset|length|style|CODE|866756|entityMap^0|0|W|M|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Uninstall Java (via Control Panel / Programs and Features)

Install Java JRE 7 --> OFFLINE &lt;--
Configure JAVA_HOME and Path = <code>%JAVA_HOME%/bin;%PATH%</code>

blocks|key|866815|text|当我安装JavaJDK1.8并将JAVA_HOME和PATH变量指向Java1.8版本时，我在nI安装JDK1.7时遇到了这种错误。当我试图找到java版本时，我得到了这个错误。我重新启动了我的机器，它工作了。似乎我们必须在修改环境变量后重新启动机器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|866816|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I got this kind of error whe nI had JDK 1.7 before and I installed JAVA JDK 1.8 and pointed my JAVA_HOME and PATH variables to JAVA 1.8 version. When I try to find the java version I got this error. I restarted my machine, and it works . It seems to be we have to restart the machine after modifying the environment variables.

blocks|key|649569|text|我也有同样的感受：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|649570|Error+opening+registry+key+'Software\JavaSoft\Java+Runtime+Environment|code-block|syntax|javascript|649571|清除Windows\SysWOW64对Win7没有帮助|649572|在我的例子中，离线安装JDK8是有帮助的(来自link)|offset|length|649573|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html^0|0|0|0|N|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I had the same:

<pre><code>Error opening registry key 'Software\JavaSoft\Java Runtime Environment
</code></pre>

Clearing Windows\SysWOW64 doesn't help for Win7

In my case it installing JDK8 offline helped (from <a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html" rel="nofollow noreferrer">link</a>)

blocks|key|649624|text|在Windows10上，我刚刚安装了JDK，并且在检查版本时得到了这些错误。我不得不从C:\ProgramData\Oracle\Java\javapath中删除所有以java开头的可执行文件(即java.exe、javaw.exe和javaws.exe)。然后，删除后，重新运行JDK安装程序，重新启动我的终端程序，java+-v就可以工作了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|649625|entityMap^0|17|Z|2C|4|2Q|8|2Z|9|39|A|4F|7|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|G|$]]

On Windows 10 I had just installed the JDK, and got these errors when checking the version. I had to delete all executable files starting with <code>java</code> (i.e. <code>java.exe</code>, <code>javaw.exe</code> and <code>javaws.exe</code>) from <code>C:\ProgramData\Oracle\Java\javapath</code>. And then, once deleted, re-run the JDK installer, restart my terminal program and <code>java -v</code> works.

blocks|key|867041|text|我用的是Windows7，安装后也遇到了同样的问题:+PyCharm。我对PyCharm不满意，所以我决定改用Eclipse。就在这时，我发现我的JDK出了问题。我曾经有过Java.9.x。所以我决定卸载它并获取更新的版本(我当时的版本是Java.11.x。同样的问题仍然存在。我遵循了上面帖子中提到的大多数步骤，比如：-删除所有java*.exe文件，-从注册表中删除与Java相关的条目。-清理所有不必要的Java文件夹。然而，没有任何帮助。我仍然在系统中有一些引用损坏的Java路径名的东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|867042|真正带来补救措施的是：-卸载我目前所拥有的JDK的任何版本。-重新安装了问题发生前我拥有的最后一个JDK版本-正确卸载该版本。-安装SDK的最新版本。。。|867043|就是这样..在这一点上，一切都恢复了正常。除了Java.11.xx没有自动修复系统路径之外，我必须手动修复。|867044|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I have Windows 7. I got the same problem after installing: PyCharm.
I wasn't satisfied with PyCharm, so I decided to use Eclipse instead. This is when I discovered that things went wrong with my JDK. I used to have Java.9.x. So I decided to uninstall it and get the newer version (at my time it was Java.11.x. The same problem persisted. 
I followed most of the steps mentioned above in the post like:
- Removing all java*.exe files, 
- removing Java related entries from the registry. 
- Cleaning-up all unnecessary Java folders. However nothing helped. I still had something in the system referring to a broken Java pathname.

What really brought remedy is the following:
 - Uninstalled what ever version of JDK I had at the moment.
 - Re-Installed the last JDK version I had before the problem took place
 - Properly uninstall that version. 
 - Install whatever latest version of SDK. .. 

That's it .. at this point everything returned to normal ... Except that Java.11.xx did not fix the system path automatically, I had to do it manually.

blocks|key|649751|text|删除本地路径C:\ProgramData\Oracle\Java\javapath中存在的这3个文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|649752|java.exe
javaw.exe
javaws.exe|code-block|syntax|javascript|649753|这为我解决了这个问题:)|649754|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Delete these 3 files present in your local at path C:\ProgramData\Oracle\Java\javapath

<pre><code>java.exe
javaw.exe
javaws.exe
</code></pre>

This solved the issue for me :)

blocks|key|867188|text|确保从system32、SysWOW64中删除java引用，并从ProgramData\Oracle\Java中删除javapath路径。它解决了这个问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|867189|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Make sure to delete java references from system32, SysWOW64, and delete javapath from ProgramData\Oracle\Java. It solves the issue

blocks|key|867255|text|如果路径中有"C:\ProgramData\Oracle\+java+\javapath“，只需确保java+bin路径条目出现在路径中此条目之前。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|867256|我也面临着完全相同的问题，我只是将列表中的java+jdk/jre+bin+path条目上移到oracle条目的上方，它就解决了我的问题。|867257|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|$]]

If you have &quot;C:\ProgramData\Oracle\Java\javapath&quot; in your PATH, just make sure that the java bin path entries are present before this entry in your PATH.
I was facing the exact same issue, and I just moved the java jdk/jre bin path entries up in the list, above the oracle entry and it resolved my issue.

I get this error when I try to do anything with Java in command prompt:

<pre><code>Error opening registry key 'Software\JavaSoft\Java Runtime Environment.3'
Error: could not find Java.dll
Error: could not find Java 2 Runtime Environment
</code></pre>

I did screw around with deleting Java directories and registry a few days ago. I restarted computer and java was still working fine, then i restarted it again today and now I get this error. I have tried uninstalling and reinstalling but that doesn't seem to work. I have the latest java JRE installed and the path set in the environment variables. Anyone have any clue how to fix this?

Java Error opening registry key

Windows

Eclipse

Java

当我试图在命令提示符下使用Java执行任何操作时，会出现以下错误：Error opening registry key 'Software\JavaSoft\Java Runtime Environment.3'Error: could not find Java.dllError: could not find Ja...

问打开注册表项时出现Java错误
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