Question

I am trying to run the jar file on linux created from windows using jdk7 .
I am using the following command to run the

  java -jar jarfile.jar

its running the jar and throwing the exception as un recognised class format version. because linux is showing the java version as 1.4.2 while i have extracted the jdk1.7 in the root directory but it is still taking the java version as 1.4.2 . what i have to do to run the jar file created using jdk1.7 . I have extracted the java (jdk1.7) on linux in root directory.

Answer 1

You need to specify the JDK 1.7 on your path e.g.

$ PATH=/jdk17/bin:$PATH

Note how you specify not just the path to the 1.7 installation, but the bin path within that.

Typing

$ which java

after you’ve changed the PATH will confirm if this has worked.