[ubuntu] ubuntu jdk 1.7 install

- ubuntu jdk 1.7 install
- ubuntu jdk install
- ubuntu jdk 설치



OpenJDK

sudo apt-get install openjdk-7-jdk



Oracle JDK

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
sudo apt-get install oracle-java7-set-default


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