Debian安装JDK

sudo tar -zxvf ~/jdk-8u60-linux-x64.tar.gz -C /usr/local

vi ~/.bashrc

export JAVA_HOME=/usr/local/jdk1.8.0_60
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

source ~/.bashrc

sudo update-alternatives --install /usr/bin/java java /usr/local/jdk1.8.0_60/bin/java 300
sudo update-alternatives --install /usr/bin/javac javac /usr/local/jdk1.8.0_60/bin/javac 300

sudo update-alternatives --config java