java8升级

#------java升级------

下载版本tar包

# wget http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz?AuthParam=1505727563_a9959e1f77adf792ce012dc8e6c953ad

# mv jdk-8u144-linux-x64.tar.gz?AuthParam=1505727563_a9959e1f77adf792ce012dc8e6c953ad jdk-8u144-linux-x64

在 /usr 目录下新建一个文件夹，用于存放下载的JDK源码

# mkdir /usr/java

解压放在/use/java下

# tar -zxvf jdk-8u144-linux-x64 -C /usr/java

设置环境变量

# vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.8.0

export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH

启用修改

# source /etc/profile

验证

# java -version