Ubuntu安装JDK

# jdk-8u141-linux-x64.tar.gz
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u141-b15/336fa29ff2bb4ef291e347e091f7f4a7/jdk-8u141-linux-x64.tar.gz" tar xzf jdk-8u141-linux-x64.tar.gz

~/Softwares/java/

sudo mkdir /home/xxx/Softwares/java/

sudo tar -zxvf jdk-7u60-linux-x64.tar.gz -C /home/xxx/Softwares/java/

cd /home/xxx/Softwares/java/
mv www jdk

## 或者这个文件 /etc/profile
vim ~/.bashrc

#set oracle jdk environment
export JAVA_HOME=home/xxx/Softwares/java/jdk
export JRE_HOME=${JAVA_HOME}/jre  
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib  
export PATH=${JAVA_HOME}/bin:$PATH  

source ~/.bashrc

java -version

javac -version