Linux下配置JAVA_HOME

环境说明

系统为CentOS 7

[root@localhost ~]# lsb_release -a
LSB Version:	:core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID:	CentOS
Description:	CentOS Linux release 7.6.1810 (Core) 
Release:	7.6.1810
Codename:	Core

安装配置步骤

1.下载jdk

官网下载地址

 

2.将下载好的软件包解压到指定目录

tar -zxf /usr/local/software/jdk-8u231-linux-x64.tar.gz -C /usr/local/software/java

这里我把压缩包解压到了/usr/local/software/java 下面

3.配置JAVA_HOME

打开/etc/profile文件

vim /etc/profile

在文件末尾添加以下内容

export JAVA_HOME=/usr/local/software/java/jdk1.8.0_231
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

4.测试配置是否成功

[root@localhost ~]# java -version
java version "1.8.0_231"
Java(TM) SE Runtime Environment (build 1.8.0_231-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.231-b11, mixed mode)

[root@localhost ~]# echo $JAVA_HOME
/usr/local/software/java/jdk1.8.0_231