Ubuntu updating java
the steps below show you how to get Oracle Java JDK 9 / JRE via PPA on Ubuntu 16.04 | 17.10 | 18.04 installed…Oracle Java JDK is a development environment for developing applications and tools based on Java.That's fine with me, since I need the JDK for program development.) The instructions are straightforward and worked fine for me.Once I had confirmed that Java 7 was installed and was the default choice, there was one more step. I could have installed the latest version with Java 7 bundled, but that's a hefty download, and my current version of Netbeans is recent enough.
This brief tutorial is going to show students and new users how to download Oracle Java JDK / JRE and install on Ubuntu 16.04 | 17.10 | 18.04 LTS…the installer should install the latest Java JDK 9 on your Ubuntu machines.When you run the commands above you’ll be prompted to access the license terms of the software… Set Oracle JDK9 as default, to do that, install the oracle-java9-set-default package. Following a suggestion in a recent email from the folks at Mozilla, I checked my Firefox plugins and discovered a security warning for the Java 6 plugin.
I'm not sure if I could upgrade just the plugin, using the Java 7 browser plugin while still using the Java 6 JRE (runtime environment) and the Java 6 JDK (development kit); so I decided to upgrade everything to Java 7.In Netbeans, I clicked to point to the Java 7 directory.