Ubuntu :: java 1.7 설치

$ sudo mkdir -p /usr/local/java

$ sudo -s mv /jdk1.7.0_45/ /usr/local/java

$ sudo vim /etc/environment

PATH="..............:/usr/bin/java/jdk1.7.0_45/bin"

JAVA_HOME=/usr/bin/java/jdk1.7.0_45

$ source /etc/environment

$ sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jdk1.7.0_05/bin/java" 1

$ sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk1.7.0_05/bin/javac" 1

$ sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jdk1.7.0_05/bin/javaws" 1

$ sudo update-alternatives --set java /usr/local/java/jdk1.7.0_05/bin/java

$ sudo update-alternatives --set javac /usr/local/java/jdk1.7.0_05/bin/javac

$ sudo update-alternatives --set javaws /usr/local/java/jdk1.7.0_05/bin/javaws

$ java -version