Sometimes when we start application on MacOSx or linux they don't start, because an port is already occupied by application which terminated unexpectedly or by some other application. Developers face these kind of issue more frequently, when we run java application in our IDE eclipse or IntelliJ Idea and switch between run/debug or error in run/debug. Now we need to free the port which was occupied by an existing instance of the application or any
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If you are running an older version on java on your Ubuntu 12.04 environment, you must remove it before installing Java7. Do the following to remove: $sudo apt-get purge openjdk* If you installed java 7 earlier and having problem with java then you have to do the following to remove it: $sudo rm /var/lib/dpkg/info/oracle-java7-installer* $sudo apt-get purge oracle-java7-installer* $sudo rm /etc/apt/sources.list.d/*java* $sudo apt-get update Installing Oracle Java7 on Ubuntu 12.04 LTS: $sudo add-apt-repository ppa:webupd8team/java $sudo
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