centos jdk8 install
0. 装了好多遍jdk 以前一直是 vi /etc/profile文件 追加 环境变量 ,仔细一看 profile文件提示 尽量不要修改!!! so...
1. 下载jdk8.tar.gz
2. 卸载openjdk
$ rpm -qa|grep jdk
显示XX-openjdk-XX 挨个卸掉
$ yum -y remove XX-openjdk-XX
3. 解压jdk8.tar.gz
$ cd /usr/java
$ tar zxvf /home/rocky/Downloads/jdk8.tar.gz
4. 设置环境变量
$ cd /etc/profile.d
$ vi jdk8.sh
export JAVA_HOME=/usr/java/jdk1.8.0_144
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
$ source /etc/profile
$java -version
5. maven 安装类似 (mvn -version)
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