Where is JDK located in Linux?

Procedure

1. Download or save the appropriate JDK version for Linux. …
2. Extract the compressed file to the required location.
3. Set JAVA_HOME using the syntax export JAVA_HOME= path to JDK . …
4. Set PATH using the syntax export PATH=${PATH}: path to the JDK bin . …
5. Verify the settings using the following commands:

How do I open java in Ubuntu?

Just follow these simple steps:

1. From Terminal install open jdk sudo apt-get install openjdk-7-jdk.
2. Write a java program and save the file as filename.java.
3. Now to compile use this command from the terminal javac filename.java. …
4. To run your program that you’ve just compiled type the command below in terminal: java filename.