우분투에 java 를 설치하기.
1. Install OpenJdk
$ sudo apt-get install openjdk-7-jdk
2. Install Oracle java7 jdk
$ sudo add-apt-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-jdk7-installer
2-1. Install Oracle java7 jdk Manually
$ cd ~
$ cd 다운로드/
$
Unzip Download JDK File
$ tar zxvf jdk-7u7-linux-i586.tar.gz
Normally locate java PATH is /use/lib
$ sudo mkdir -p /usr/lib/jvm/jdk1.7.0
move jdk1.7.0 file
$ sudo mv jdk1.7.0_07/* /usr/lib/jvm/jdk1.7.0/
add java to system
$ sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0/bin/java" 1
add javac and javaws
$ sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0/bin/javac" 1
$ sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.7.0/bin/javaws" 1
Let's execute jdk
$ java -version
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