ubuntu install sun jdk 1.7 - graybull's Blog

ubuntu install sun jdk 1.7

graybull posted @ 2013年7月03日 18:32 in Unix/Linux with tags ubuntu JDK , 3412 阅读
  • download jdk-7u25-linux-x64.tar.gz from oracle site.
  • unpack jdk-7u25-linux-x64.tar.gz
  • Install it. Actually, you needn't install it, just copy the directory to a specified place.

     $ sudo mkdir /usr/local/java

     $ sudo cp jdk1.7.0_25 /usr/local/java

  • setting environment.

      $ sudo vi /etc/profile

      append the followings to the end of it:

    export JAVA_HOME=/usr/local/java/jdk1.7.0_25
    export CLASSPATH=.:$JAVA_HOME/lib
    export PATH=$JAVA_HOME/bin:$PATH
  • reload configuration

     $ source ./profile

  • update-alternatives

     we must do this so that the commands such as 'java' can be executed on console:

     $ sudo update-alternatives --install /usr/bin/java java /usr/local/java/jdk1.7.0_25/bin/java 300

     $ sudo update-alternatives --install /usr/bin/javac javac /usr/local/java/jdk1.7.0_25/bin/javac 300

     $ sudo update-alternatives --install /usr/bin/javap javap /usr/local/java/jdk1.7.0_25/bin/javap 300

     $ sudo update-alternatives --install /usr/bin/javadoc javadoc /usr/local/java/jdk1.7.0_25/bin/javadoc 300

 

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