Java版本指向错误的目录 [英] Java -version points to wrong directory

问题描述

我已经设置了环境变量。窗口7-32位

I have set my environment variables up. Window 7 - 32 bit

C:\Users\user>java -version
Error: could not open `E:\lib\i386\jvm.cfg'

C:\Users\user>echo %JRE_HOME%
C:\Program Files\Java\jre7\bin

C:\Users\user>echo %PATH%
C:\Program Files\PC Connectivity Solution\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\jdk1.6.0_22/bin;C:\Program Files\Java\jre7\bin/bin;C:\Ruby193\bin;C:\Ruby187\bin

C:\Users\user>java -version
Error: could not open `E:\lib\i386\jvm.cfg'

我检查了E：该位置没有任何东西。
我有JRE7和jdk1.6.0_22。

I checked on E: there is nothing on the location. I have JRE7 and jdk1.6.0_22.

您能给我解决方法吗？

我尝试使用此解决方案，
无法在Windows 7（64位）中正确设置Java的路径
，但是，单击控制面板上的JAVA时，会得到相同的结果错误信息。 [错误：无法打开ʻE：\lib\i386\jvm.cfg']

I tried to use this solution, Not able to properly set up the path of java in Windows 7 , 64 bit however, while clicking on JAVA present on control panel it is giving me same error message. [ Error: could not open `E:\lib\i386\jvm.cfg']

推荐答案

在安装时如果是JRE，安装程序会在Windows系统目录（例如C：/winnt/system32/java.exe）中写一个特殊的 java.exe 。该 java.exe 将在注册表中查找以获取当前JavaHome的位置。

When you install a JRE, the installer writes a special java.exe in the Windows system directory (ex . C:/winnt/system32/java.exe). This java.exe will look in the registry to get the location of the current JavaHome.

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\CurrentVersion]  (64 bits or 32 bits only)
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment\CurrentVersion] (32 bits installed on OS 64 bits)

，然后获取JRE的路径用于标记为当前版本的版本。

and then get the path of the JRE for the version marked as current.

对于在Windows 64位安装上安装的32位JRE：

For a 32 bits JRE installed on a Windows 64 bits installation :

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment\CurrentVersion] -->  1.8

然后

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment\1.8\JavaHome] --> C:\Program Files (x86)\Java\jre1.8.0_31

因此请验证注册表中的值并清理您的PATH，因为您不需要它来通过仅键入 java.exe从命令提示符启动 java.exe 。

So verify the values in the registry and clean up you PATH because you don't need it to launch java.exe from the command prompt by typing only java.exe.

如果设置正确，则无需修改PATH即可覆盖默认JRE：

If your setup is correct, you will be able to override the default JRE without modifying your PATH :

> java -version:"1.6" MyClass  (force the jre 1.6 installed to be used)

The JAVA_HOME 和 JRE_HOME 环境变量未被安装程序安装在程序文件中的JRE使用。 IDE，工具或应用程序服务器的约定。

The JAVA_HOME and JRE_HOME environment variable are not used by the JRE installed in the "Program Files" with the installer, they are used by convention by IDE, tools or application server.

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