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darcyparker/set_jdk_JAVA_HOME.bat

Last active February 29, 2016 07:32
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Searches for latest JDK installed and sets %JAVA_HOME% to it. Useful for tools like ant which expect %JAVA_HOME% to be set to a JDK. This saves me time in having to reset %JAVA_HOME% after I update my JDK install.
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set_jdk_JAVA_HOME.bat
@echo off
REM https://gist.github.com/darcyparker/7121448
REM Searches for latest JDK and sets JAVA_HOME
REM Look up current version
for /f "usebackq tokens=2*" %%i in (`reg query "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit" /s ^| "%WINDIR%\system32\find.exe" "CurrentVersion"`) do set _jdkcurrentver=%%j
REM Look up JavaHome for current version
for /f "usebackq tokens=2*" %%i in (`reg query "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\%_jdkcurrentver%" /s ^| "%WINDIR%\system32\find.exe" "JavaHome"`) do set JAVA_HOME=%%j
echo JAVA_HOME=%JAVA_HOME%
set _jdkcurrentver=
setx JAVA_HOME "%JAVA_HOME%"
@levonk
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levonk commented Feb 29, 2016

Thanks for this, haven't tried it, but was going to ask

  • Does this still work with the change to Oracle
  • any easy way to update the system PATH and environments?

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