JDK1.8安装和环境搭建步骤

向右看齐 2023-10-03 11:18 16阅读 0赞

**JDK1.8****安装步骤**

1、安装文件

1.  首先打开JDK的安装包，选择公共JRE。（下载的路径可以根据自己的选择更改）。我选择的是D盘。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70][]

1.  接着默认下一步，直到安装出现到下图：（为了方便后期的使用，此处的jre安装建议和JDK文件同级）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 2][]

2、环境变量配置

1）安装完成后，接下来就是配置变量环境。

（1）找到JDK安装路径

我的电脑——>属性——>高级系统设置——>环境变量——>新建

(2) 配置JAVA\_HOME 值为1 安装路径（就是我们提前找到的JDK路径）（选中的是系统变量，而不是用户变量）

变量名：JAVA\_HOME（英文大写）

变量值：我们的JDK安装路径（本小白的是下图的）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 3][]

2）配置CLASSPATH：值为：.;%JAVA\_HOME%\\lib\\tools.jar;%JAVA\_HOME%\\lib\\dt.jar;

变量名：CLASSPATH（英文大写）

变量值：.;%JAVA\_HOME%\\lib\\tools.jar;%JAVA\_HOME%\\lib\\dt.jar;(必须全是英文状态下的)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 4][]

3）编辑path：win10的方式建立两个变量：

（1）%JAVA\_HOME%\\bin

(2) %JAVA\_HOME%\\jre\\bin

(win7就不解释了，小白自我感觉win7系统是噩梦的开始，建议用win10)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 5][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 6][]

4）然后再猛点确定就行了。

3、验证环境

（1）Java -version

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 7][]

（2）javac

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY1MDAwMw_size_16_color_FFFFFF_t_70 8][]

到此我们整个安装步骤就结束啦。

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