Java is generally installed at /usr/lib/jvm in the Linux operating system. A symlink for Oracle Java should be present in the /usr/local/java/jdk [version] directory as well.
Type the following at the prompt and press Enter. This updates all the packages in available in Ubuntu. Type your password at the prompt and press Enter. When the update is done, choose which a package from the list to install java. In our example, we installed version 6.
It does not come by default with most Ubuntu versions as security is a concern when Java is installed on your system. Time and again, a regular Ubuntu user might need to verify if Java is installed on the system at the moment and also if it is installed, which version is the system currently using.
One of the next things we wondered was what is the best Java runtime environment for Ubuntu?
The answer is that the Java Runtime Environment (JRE) is required to run Java programs. Nowadays there are many JRE packages available from a variety of projects and companies, but the two most popular on Ubuntu are Open. JDK and Oracle Hot, and spot.
How to find the Java installation location in Linux?
Environment variables are normally defined in the file /etc/environment. Now, you’ll find the Java installation locations using the update-alternatives command as below. It’ll display the Java installation locations and it shows the default Java version too as below.
When we were writing we ran into the question “Where is the actual location of Java in Linux?”.
This is what we researched. so, now we know that /usr/bin/java is actually a symbolic link to /etc/alternatives/java. Dig deeper using the same method above: So, thats the actual location of java: / usr/local/jre ..
You could be wondering “What is the Java_home path for Ubuntu?”
For Ubuntu 18.04, the path is / usr/lib/jvm /java-8- openjdk -amd64/ To check whether your JAVA_HOME path has been successfully saved, enter the following command to check.
You can find JVM path in Ubuntu using the command: readlink -f $ (which java). It will show you the location of the default Java version that is currently active. How to find path to java? You can find path to Java (all installed versions) using the command update-alternatives –list java.