linux 安装jdk

linux 安装jdk1.8

1. linux 执行一下命令下载jdk压缩包，小版本是1.8.0_141

wget --no-cookies --no-check-certificate --header “Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie” “http://download.oracle.com/otn-pub/java/jdk/8u141-b15/336fa29ff2bb4ef291e347e091f7f4a7/jdk-8u141-linux-x64.tar.gz”

2. 移动到 /usr/local 目录下并解压修改名称为java

tar -zxvf /usr/local/jdk-8u141-linux-x64.tar.gz
mv /usr/local/jdk1.8.0_141 /usr/local/java

3. 修改配置文件

vi /etc/profile

加入配置文件

export JAVA_HOME=/usr/local/java
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JRE_HOME=$JAVA_HOME/jre

4. 生效配置

source /etc/profile