ubuntu java

tar -xvf server-jre-8u111-linux-x64.tar.gz
sudo mkdir -p /usr/lib/jvm
sudo mv ./jdk1.8.0_111 /usr/lib/jvm/
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_111/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_111/bin/javac" 1
sudo chmod a+x /usr/bin/java
sudo chmod a+x /usr/bin/javac
sudo chown -R root:root /usr/lib/jvm/jdk1.8.0_111
sudo update-alternatives --config java
# 查看java 版本
java -version