![]() ![]() OpenJDK is the short form of Open Java Development Kit similar to Oracle's Java Development Kit used to develop Java Applications. These features make it easier to develop applications that run on multiple platforms. In addition to the above benefits, the Oracle JDK offers additional features such as JMX monitoring, remote debugging, and application server integration. ![]() It also includes updates and bug fixes as soon as possible after they become available. The Oracle JDK comes with extensive documentation and training materials. Another reason to consider using the Oracle JDK is because of its support. For instance, the OpenJDK cannot be used in certain countries where Oracle has exclusive rights to the Java trademark. Both versions of the JDK are free to download and use, but there are some restrictions with the OpenJDK. There are several reasons why one might choose to use either the OpenJDK or Oracle JDK. Finally, you need to understand the differences between the two versions because they offer different levels of support. Third, you need to understand what features each version offers so you can choose the one that meets your needs. Second, you need to understand how the licensing works so you can make sure you're not violating any terms. First, there are some security concerns with open source software. There are several reasons why you might care about the differences between open source and proprietary software. Why You Should Care About The Differences Between OpenJDK AndOracleJDK ? sudo apt-get purge icedtea-* openjdk-*Ĭheck that all OpenJDK packages have been removed.OpenJDK vs OracleJDK - Which Java DevelopmentKit Is Better? To remove openjdk: sudo apt-get purge openjdk* First check which OpenJDK packages are installed. Then do sudo update-alternatives -config java The next 2 commands must be type excatly perfectly to avoid Verify that the symlinks were removed java -version Sudo update-alternatives -remove "javaws" "/usr/lib/jvm/jdk/bin/javaws" Sudo update-alternatives -remove "javac" "/usr/lib/jvm/jdk/bin/javac" So if your version is 1.7.0_03, you would type sudo update-alternatives -remove "java" "/usr/lib/jvm/jdk1.7.0_03/bin/java") sudo update-alternatives -remove "java" "/usr/lib/jvm/jdk/bin/java" (replace the word (version)with your Java version. To check the setup before uninstalling Java. If the command above produces any output like /path/to/jre1.6.0_34/bin/pack200 remove the directory that is parent of bin, like this: sudo rm -rf /path/to/jre1.6.0_34. Search for possible remaining Java directories: sudo updatedb Remove Java entries, if there is still any, from the alternatives: for g in ControlPanel java java_vm javaws jcontrol jexec keytool mozilla-javaplugin.so orbd pack200 policytool rmid rmiregistry servertool tnameserv unpack200 appletviewer apt extcheck HtmlConverter idlj jar jarsigner javac javadoc javah javap jconsole jdb jhat jinfo jmap jps jrunscript jsadebugd jstack jstat jstatd native2ascii rmic schemagen serialver wsgen wsimport xjc do sudo update-alternatives -remove-all $g done Remove manually installed JVMs: sudo rm -rf /usr/lib/jvm/* Remove Java config and cache directory: sudo bash -c 'ls -d /home/*/.java' | xargs sudo rm -rf Remove all the Java related packages (Sun, Oracle, OpenJDK, IcedTea plugins, GIJ): dpkg-query -W -f='$' | xargs sudo apt-get -y purge ![]()
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