linux 安装java jdk8

1.下载官方jdk  http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htmlhtml

wget http://124.205.69.170/files/31670000065F965E/download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jdk-8u161-linux-x64.tar.gz

2.解压java

tar -zxvf jdk-8u161-linux-x64.tar.gz

3. 设置环境变量linux

vi /etc/profile

将下面这段shell放在最后, JAVA_HOME修改成本身的jdk目录shell

# JAVA
JAVA_HOME=/usr/java/jdk1.8.0_151/
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME
export PATH
export CALSSPATH

保存并退出oracle

4. 使修改过的profile文件生效code

source /etc/profile
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