安装GDK

1。安装GDK

官网下载，或者用winscp工具下载后解压

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u73-b02/jdk-8u73-linux-i586.tar.gz

tar zxvf jdk-8u65-linux-x64.tar.gz

mv jdk1.8.0_65/ /usr/local/

vi /etc/profile.d/java.sh  //加入如下配置

JAVA_HOME=/usr/local/jdk1.8.0_65

JAVA_BIN=/usr/local/jdk1.8.0_65/bin
JRE_HOME=/usr/local/jdk1.8.0_65/jre
PATH=$PATH:/usr/local/jdk1.8.0_65/bin:/usr/local/jdk1.8.0_65/jre/bin

CLASSPATH=/usr/local/jdk1.8.0_65/jre/lib:/usr/local/jdk1.8.0_65/lib:/usr/local/jdk1.8.0_65/jre/lib/charsets.jar

source  /etc/profile.d/java.sh

如果以上配置成功，则下面的命令可以看到java的版本：

java  -version