Let's consider a JDK8 installation using 2 different versions: default and Oracle. The default version is easiest because it is packaged with Ubuntu.
There is default Java installation called the JDK (Java Development Kit). The JDK is usually only needed if you are going to to do some software developmwent using Java or if some software requires it. The JDK does contain the JRE.
| #Login as root | |
| sudo su | |
| #create jdk directory | |
| mkdir /opt/jdk | |
| #uncompress, change to your file name | |
| tar -zxf jdk-8u5-linux-x64.tar.gz -C /opt/jdk | |
| #check if files are there |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <persistence xmlns="http://java.sun.com/xml/ns/persistence" | |
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | |
| xsi:schemaLocation="http://java.sun.com/xml/ns/persistence | |
| http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" | |
| version="1.0"> | |
| <!-- derby --> |