JDK安装配置

安装

1.解压安装

curl -O http://download.Oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz
tar -zxvf jdk-7u79-linux-x64.tar.gz

2.yum安装

yum search java|grep jdk
yum install java-1.8.0-openjdk-xxx

3.rpm安装

curl -O http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm
rpm -ivh jdk-7u79-linux-x64.rpm

配置

# 1、添加配置文件
vi /etc/profile.d/java.sh
# java.sh文件内容：
#!/bin/bash
JAVA_HOME=/usr/java/jdk1.8.0_102 #安装文件夹
PATH=$JAVA_HOME/bin:$PATH
export PATH JAVA_HOME
export CLASSPATH=.

# 2、配置文件生效
chmod +x /etc/profile.d/java.sh
source /etc/profile.d/java.sh