Centos7-Java环境配置

安装Java

官网：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

下载jdk-8u144-linux-x64.tar.gz，如果下载rpm包则不需要配置环境变量

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

mkdir /usr/local/java

mv jdk1.8.0_144/ /usr/local/java/jdk

配置Java环境变量

vim /etc/profile     添加以下三行内容

export JAVA_HOME=/usr/java/jdk

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

export PATH=$JAVA_HOME/bin:$PATH

[root@local6 ~]# source /etc/profile

测试环境变量配置成功：

[root@local6 ~]# java -version

java -version

openjdk version "1.8.0_102"

OpenJDK Runtime Environment (build 1.8.0_102-b14)

OpenJDK 64-Bit Server VM (build 25.102-b14, mixed mode)