Java Environment – Fixing Wrong java -version Reported


I am running Windows 7 Professional x64 and have the following Java versions installed:


  • C:\Program Files\Java
    • jdk1.6.0_24
    • jdk1.7.0_04
    • jdk1.7.0_07
    • jre6
    • jre7


  • C:\Program Files (x86)\Java
    • jre1.6.0_07
    • jre6
    • jre7

in my environment variables I have my PATH containing C:\Program Files\Java\jdk1.6.0_24\bin and JAVA_HOME set to C:\Program Files\Java\jdk1.6.0_24\bin

However running java -version reports

java version "1.7.0_07"
Java(TM) SE Runtime Environment (build 1.7.0_07-b10)
Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)

How is this the case when there is no reference to this version of Java in my Environment variables.

Any help on this issue would be great as I am trying to run Apache ANT using Java 1.6.

Best Answer

You're probably have java.exe copied over to one of system paths (AFAIK that's Java installer default behavior). To check what actually executes when you run 'java -version' run from command line:
for %I in (java.exe) do @echo %~$PATH:I and it will tell you where it is.

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