58 lines
1.2 KiB
Markdown
58 lines
1.2 KiB
Markdown
# Linux下JDK的安装
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>**系统环境**：centos 7.6
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>
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>**JDK 版本**：jdk 1.8.0_20
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### 1. 下载并解压
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在[官网](https://www.oracle.com/technetwork/java/javase/downloads/index.html) 下载所需版本的 JDK，这里我下载的版本为[JDK 1.8](https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) ,下载后进行解压：
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```shell
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[root@ java]# tar -zxvf jdk-8u201-linux-x64.tar.gz
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```
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### 2. 设置环境变量
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```shell
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[root@ java]# vi /etc/profile
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```
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添加如下配置：
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```shell
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export JAVA_HOME=/usr/java/jdk1.8.0_201
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export JRE_HOME=${JAVA_HOME}/jre
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export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
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export PATH=${JAVA_HOME}/bin:$PATH
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```
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执行 `source` 命令，使得配置立即生效：
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```shell
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[root@ java]# source /etc/profile
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```
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### 3. 检查是否安装成功
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```shell
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[root@ java]# java -version
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```
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显示出对应的版本信息则代表安装成功。
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```shell
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java version "1.8.0_201"
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Java(TM) SE Runtime Environment (build 1.8.0_201-b09)
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Java HotSpot(TM) 64-Bit Server VM (build 25.201-b09, mixed mode)
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```
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<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/weixin-desc.png"/> </div> |