Ubuntu supports for a default JDK which is OpenJDK(not OracleJDK ). what are the differences between OpenJDK and OracleJDK?. OpenJDK is a free and open-source implementation of Java SE Platform Edition with contribution from Oracle and open Java community.OracleJDK is developed and maintained by the Oracle itself whereas OpenJDK can be developed by Java Community.Oracle…… Continue reading How to install JDK(Java Development Kit) on Ubuntu OS