安装依赖jdk---linux

1，下载JDK

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

2，使用XFTP工具导入linux

3，解压到/usr/local/java目录

创建usr/local/java

Mkdir /usr/local/java

解压

tar -zxvf 压缩包   -C  usr/local/java

4，配置环境 变量

vi /etc/profile

1.

JAVA_HOME=/usr/local/java/jdk1.8.0_181

PATH=$JAVA_HOME/bin:$PATH

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

export JAVA_HOME

export PATH

export CLASSPATH

2.

JAVA_HOME=/java/jdk1.8.0_161
PATH=$PATH:$JAVA_HOME/bin
export PATH

5，刷新环境变量

source /etc/profile

6，测试环境变量

java -version