我希望通过复制Java文件夹的内容并设置环境变量来确保一切都能正常工作。
我通常在虚拟机中运行安装程序，压缩\java文件夹内容，回到虚拟机的快照，然后解压缩压缩文件。
我找不到一个地方有最新的JRE / JDK压缩文件…
http://java.sun.com/javase/downloads/index.jsp
http://download.java.net/jdk6/
另外，假定sun的exe安装程序只是解压缩整个文件，而不会弄乱注册表、环境变量等等，这是否安全?
相关:在Windows上手动安装Java ?
-- 经过这么长时间，我找到了这个网站，似乎正是我要找的(2018-05-22)
当前回答
我用exe安装程序安装了JDK 8，然后卸载了JRE，我现在有JDK文件夹，没有env变量或其他设置更改。
其他回答
You can just use 7zip (or another similar app) to get the dirs inside the core.zip file that's bundled in the installer. Just use 7zip to browse the exe, you'll see a core.zip file which has all the files that usually go inside "jreX" dir (where X is the major version number). As for setting env variables and the such, you can follow the other answers. If all you want is a portable jre (for example, you can run your jars by using java.exe jarfile or javaw.exe jarfile) then this solution will do. This is very similar to copying the jre dir from one place to another
mkdir c:\JDK
cd c:\JDK
git clone https://bitbucket.org/ramazanpolat/jdk-8u112-windows-x64/
or
git clone https://bitbucket.org/ramazanpolat/jdk-8u112-windows-x86
JDK可以从这里以zip文件或。exe格式下载 http://installbuilder.bitrock.com/java/
谢谢关心;JDK似乎不与Windows注册表交互。
但是，JRE在某些情况下是这样的。
链接:http://www.rgagnon.com/javadetails/java - 0604. - html
得到广泛好评的答案很好，我已经用了很长一段时间，以这个bat文件的形式:
@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET ROOT=%cd%
REM Get the tools.zip from the innards of the installer
7z e *.exe .rsrc/1033/JAVA_CAB10/111
7z e 111 7z x tools.zip
REM Extract all
7z x -aoa tools.zip -ojdk
del tools.zip
del 111
REM Searching directory structure from root for subfolders and zipfiles.
FOR /F "delims==" %%d IN ('dir /ogne /ad /b /s "%ROOT%"') DO (
echo Descending into %%d
FOR /F "delims==" %%f IN ('dir /b "%%d\*.pack"') DO (
echo Extracting "%%d\%%f"
REM Extract all packs into jars.
jdk\bin\unpack200 -r "%%d\%%f" "%%d\%%~nf.jar"
)
)
ENDLOCAL
pause;
它需要访问7zip的路径，并且必须在你选择的JDK的文件夹中运行(它会找到它，因为上面有*.exe)。
在8u144上也能用，我猜在8u20上也能用。
