管理员把我的admin权限去掉了，那么如何获得jdk zip安装呢？这篇可以帮你。

JDK is not available as a portable zip unfortunately. However, you can:

• Create working JDK directory (C:\JDK in this case)
• Download latest version of JDK from oracle (for example jdk-7u7-windows-i586.exe)
• Download and install 7-zip (or download 7-zip portable version if you are not administrator)
• With 7-zip extract all the files from jdk-[6-7]u?-windows-i586.exe in directory C:\JDK

• In command shell (cmd.exe) do the following:

  --> change directory to directory C:\JDK\.rsrc\JAVA_CAB10

  --> execute command: extrac32 111

• Unpack C:\JDK\.rsrc\JAVA_CAB10\tools.zip with 7-zip

• In command shell (cmd.exe) do the following:

  --> change directory to C:\JDK\.rsrc\JAVA_CAB10\tools\

  --> execute command:

  for /r %x in (*.pack) do .\bin\unpack200 -r "%x" "%~dx%~px%~nx.jar"

  (this will convert all pack files into jar)

• Copy whole directory and all subdir of c:\JDK\.rsrc\JAVA_CAB10\tools where you want your JDK to be and setup manually JAVA_HOME and PATH to point to your JDK dir and its BIN subdir.

Thats all. After this you'll be able at least to use javac.exe