Linux Centos6.8 安装配置JDK1.8

1:下载JDK  因为有Cookie认证 所以在JDK下载链接前需要加上

wget -c -P /root/Downloads --no-check-certificate --no-cookie --header "Cookie: s_nr=1420682671945; s_cc=true; oraclelicense=accept-securebackup-cookie; gpw_e24=http%3A%2F%2Fwww.oracle.com%2Ftechnetwork%2Fjava%2Fjavase%2Fdownloads%2Fjdk7-downloads-1880260.html;s_sq=%5B%5BB%5D%5D"

一个完整的例子：

wget -c -P /root/Downloads --no-check-certificate --no-cookie --header "Cookie: s_nr=1420682671945; s_cc=true; oraclelicense=accept-securebackup-cookie; gpw_e24=http%3A%2F%2Fwww.oracle.com%2Ftechnetwork%2Fjava%2Fjavase%2Fdownloads%2Fjdk7-downloads-1880260.html;s_sq=%5B%5BB%5D%5D" http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz?AuthParam=1501553131_d3e0e6e1aee688dacca109570ef67f05

2:解压JDK

tar -xzvf jdk-8u144-linux-x64.tar.gz

3:配置环境变量

vim /etc/profile

最末加上：

export JAVA_HOME=/usr/local/java/jdk/jdk1.8.0_144export PATH=$JAVA_HOME/bin:$PATHexport CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

4:修改的环境变量生效

source /etc/profile

5:验证

java -version