How to switch between java versions in linux? (older or newer version selection). 1. First check what is the version is already been installed on your host by issuing command $java -version then you will see something like below OpenJDK Runtime Environment (build 1.6.0-b09) OpenJDK Client VM (build 1.6.0-b09, mixed mode) This gives you the current version of java you are using. 2.If you have more than one java versions installed on host then enter following command $update-alternative --config java this will give you the following output 1. /usr/lib/jvm/jre-1.4.2-gcj/bin/java *+ 2 /usr/lib/jvm/jre-1.6.0-openjdk/bin/java Enter to keep the current selection[+], or type selection number: Here the * indicates currently which java version you are using. you can input selection number to switch between two. Thanks, Shrenik. Have a look on my interview with EEWeb online international community
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