Install Java on Ubuntu Using the Default Package Manager The following commands imply you are already using a root user, but in case you’re not, you should add sudo at the beginning of your commands. If this changes, you can update it later. If you’re not interested in compiling Java software, the JRE will do just fine. The JDK is essentially an SDK (software development kit), as it gives you access to everything in JRE plus tools such as jdb, javadoc, and the compiler itself – javac. Oracle Java contains the JVM, the Java program, alongside other infrastructures, while the JDK is a superset of JRE. The OpenJDK (Java Development Kit) and Oracle JRE (Java Runtime Environment) are the two main kits you’ll work with.
Install Java on Ubuntu Using the Default Package Manager.
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