Distinguishing OpenJDK from Oracle JDK
Though OpenJDK is an official reference implementation for the Java platform, certain Oracle-provided software are not open source. The most famous of them is the Java browser plugin, but there are a lot more differences than just that. This recipe will show you how to distinguish OpenJDK from Oracle JDK.
Getting ready
To follow this recipe, you will need an installed OpenJDK instance. It will be good if you have an Oracle JDK instance as well, to feel the difference. Also, we will assume that you have a Linux installation and an update-java-alternatives command installed and ready to use. To know how to install OpenJDK on various systems, see the later recipes in this chapter. To know how to switch the system ...
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