Unzip JDK from installation package

  1. Create destination folder where you can RWX (e.g. C:\jdk8)
  2. Download jdk exe from Oracle (e.g. jdk-8u72-windows-x64.exe)
  3. Unzip the tools.zip found inside it into the destination folder
  4. Open cmd.exe, run:
cd C:\jdk8
for /r %x in (*.pack) do .\bin\unpack200 -r "%x" "%~dx%~px%~nx.jar"

This solution works for JDK 8 too, without the Admin authority.

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