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Solve ECJ Installation Error

Liferay Builds with the ECJ Compiler and Ubuntu provides ecj compiler separately.
1. sudo apt-get install ecj
2. If you using ant of Ubuntu (sudo apt-get install ant)
3. You need to link ecj.jar to its directory
    ( If ecj.jar already in /usr/share/ant/lib/ecj.jar then first remove this )
     sudo ln -s /usr/share/java/ecj.jar /usr/share/ant/lib/ecj.jar
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