1.1JDK安装

╰+哭是因爲堅強的太久メ 2022-10-23 09:56 102阅读 0赞

# 一、为啥要安装jdk？ #

主要是java语言的运行时跨平台的，所以java需要一套自己的运行环境，便于执行java的语法，最终翻译成机器语言，当然这只是其中的一点。以下的图可以粗略的理解一下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70][]

# 二、下载安装 #

## 1、下载地址 ##

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

如果没有注册oracle账号，自行注册一个。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 1][]

选择具体的系统版本：

1、如windows版本

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 2][]

2、下载：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 3][]

3、下载完成之后，双击exe文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 4][]

4、点击下一步：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 5][]

5、点击确定：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 6][]

6、安装成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 7][]

7、安装成功之后，在指定的文件夹路径，可以看到如下信息：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 8][]

8、配置环境变量

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 9][]

配置：JAVA\_HOME

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 10][]

配置path

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvV29ybGRZYW5nU29uZw_size_16_color_FFFFFF_t_70 11][]

9、查看是否安装成功

windows键 + R 输入cmd打开DOS窗口：

输入：java -version

![2021030816501541.png][]

如上表示安装成功！！

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[https_www.oracle.com_java_technologies_javase-downloads.html]: https://www.oracle.com/java/technologies/javase-downloads.html
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[2021030816501541.png]: https://img-blog.csdnimg.cn/2021030816501541.png