linux 安装JDK

#mkdir -p /usr/local/src/jdk

#cd /usr/local/src/jdk

#rpm -qa | grep -i jdk

 #yum -y install wget

#wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie"  http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gz

#tar -zxvf jdk-8u131-linux-x64.tar.gz

 #mv jdk1.8.0_131  jdk1.8

#vi /etc/profile

  shift + g 

这个时候按一下a或i键，进入编辑模式

粘贴：

export JAVA_HOME=/usr/local/src/jdk/jdk1.8

export PATH=$PATH:$JAVA_HOME/bin

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

#source /etc/profile

# java -version