How to Install Java In Ubuntu

Installing default JRE/JDK

Step 1:

sudo apt-get update
Step 2:
sudo apt-get install default-jre
Step 3:
sudo apt-get install default-jdk

Step 4:

java -version

 

Installing OpenJDK 7

sudo apt-get install openjdk-7-jre

Step 2:

sudo apt-get install openjdk-7-jdk