ZT https://blog.csdn.net/admin1973/article/details/60958326
卸载Linux自带的JDK
# rpm -qa|grep java // 查看jdk的信息 一般将获得如下信息: java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5# yum -y remove java java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 // 卸载从网上下载jdkwget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz我这儿将jdk解压在/home/leitao/software/java下解压:tar -zvxf jdk-8u91-linux-x64.tar.gz设置环境变量vim /etc/profile在文件末尾追加:JAVA_HOME=/home/leitao/software/java/jdk1.8.0_91JRE_HOME=$JAVA_HOME/jrePATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/binCLASSPATH=:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib/dt.jarexport JAVA_HOME JRE_HOME PATH CLASSPATH最后启用新的配置 source /etc/profile原文:https://blog.csdn.net/admin1973/article/details/60958326