How to install java in ubuntu operating system

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  • Open terminal
  • On the command line, type:$ sudo apt-get install openjdk-7-jre (The openjdk-7-jre package contains just the Java Runtime Environment. )
  • If you want to develop Java programs then install the openjdk-7-jdk package by typing :sudo apt-get install openjdk-7-jdk. 

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