ubuntu安装jdk
CLASSPATH=.:/usr/lib/jvm/jdk1.7.0/lib ?
JAVA_HOME=/usr/lib/jvm/jdk1.7.0?
And then reload .bashrc file:
source ~/.bashrc
5. Run the following commands:?
$sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0/bin/java 300
$sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0/bin/javac 300
$sudo update-alternatives --install /usr/bin/javap javap /usr/lib/jvm/jdk1.7.0/bin/javap 300
$sudo update-alternatives --install /usr/bin/javadoc javadoc /usr/lib/jvm/jdk1.7.0/bin/javadoc 300
Installation has now done. Run $java -version for a test.
