ubuntu1204 安装jdk

http://download.oracle.com/otn/java/jdk/7u67-b01/jdk-7u67-linux-x64.tar.gz

 

sudo mkdir /usr/lib/jvm

sudo cp -r jdk1.7.0_67 /usr/lib/jvm

 

vi ~/.profile

    export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_67 # Add JAVA to PATH for scripting

source ~/.profile

 

env

  #如果JAVA_HOME=/usr/lib/jvm/jdk1.7.0_67，说明配置成功

 

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_67/bin/java 300

sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_67/bin/javac 300

sudo update-alternatives --config java

sudo update-alternatives --config javac

 

java -version

  #如果看到java version "1.7.0_67"，就说明安装成功