Java第一步开发环境的搭建

深藏阁楼爱情的钟 2023-02-28 15:27 14阅读 0赞

## 1.下载JDK（以8.0为例） ##

> jdk和jre官方网址：[https://www.oracle.com/cn/java/technologies/javase-downloads.html][https_www.oracle.com_cn_java_technologies_javase-downloads.html]

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> 根据系统下载对应jdk，32位系统对应x86，64位系统对应x64

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> 点击下载转到页面登录账户之后下载得到一个可执行文件

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> 点击运行

![在这里插入图片描述][20200721223642413.png]

## 二、安装 ##

> 双击.exe文件运行

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> 点击下一步，选择安装位置

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> 安装JRE，建议JDK同一目录

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> 安装完成

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> 安装之后文件夹下的目录

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## 三、环境变量配置 ##

> 我的电脑→右键→属性

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> 高级系统设置

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> 环境变量

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> 新建一个变量名为“JAVA\_HOME”的系统变量，变量值为“D:\\Java”（jdk安装路径）

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> 再新建一个变量名为“CLASSPATH”，变量值为==“.;%JAVA\_HOME%\\lib\\dt.jar;%JAVA\_HOME%\\lib\\tools.jar;”==的系统变量

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> 打开“Path”系统变量，点击新建，添加“%JAVA\_HOME%\\bin”和“%JAVA\_HOME%\\jre\\bin”两个系统变量

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## 四、配置成功验证版本 ##

> win+r 键，输入cmd，运行，命令框输入java -version  
> 显示安装的版本

![在这里插入图片描述][20200722000827254.png]

[https_www.oracle.com_cn_java_technologies_javase-downloads.html]: https://www.oracle.com/cn/java/technologies/javase-downloads.html
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