Java开发包（JDK）

Bertha 。 2023-07-10 11:30 3阅读 0赞

**Java开发包（Java Development Kit，简称JDK）** 包含：  
– javac：Java编译器  
– java：Java虚拟机  
– javadoc：Java文档生成器  
– jar：Java归档打包程序  
– appletviewer：Java小应用程序查看器  
– Java API（Application Programming Interface）  
**JRE = java + Java API**

**JDK的版本**  
– JDK 1.0～JDK 1.5（JDK 5） – JDK 5～JDK 8  
– 截至2018年12月，最新JDK版本为JDK 11

Java语言根据用途将JDK分成**3个不同的系列**  
– Java SE（标准版，用于开发Java应用程序）  
– Java EE（企业版，用于开发Java Web应用程序）  
– Java ME（小微版，用于开发Java嵌入式应用程序）  
例如：JDK 8/Java SE系列，简称Java SE8

## 搭建java开发环境 ##

**1. 下载Java SE系列JDK8安装包**  
下载JDK  
http://www.oracle.com/technetwork/java/index.html  
或：  
http://java.sun.com  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 1]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 2]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 3]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 4]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 5]

**2. 设置JDK – 环境变量**  
– JAVA\_HOME：指明JDK的安装目录  
– CLASSPATH：指明查找Java类库时的搜索路径  
– Path：指明Java编译器及虚拟机等的安装目录

右击电脑，选择属性，点击更改设置，进入系统属性界面，点击高级  
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![在这里插入图片描述][20200302143714153.png]

![在这里插入图片描述][20200302143728717.png]  
![在这里插入图片描述][20200302143858618.png]  
.;%JAVA\_HOME%\\lib\\dt.jar;%JAVA\_HOME%\\lib\\tools.jar;

**3.验证JDK安装及其环境变量**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 7]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTQzNzAyMg_size_16_color_FFFFFF_t_70 8]

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[20200302143714153.png]: https://img-blog.csdnimg.cn/20200302143714153.png
[20200302143728717.png]: https://img-blog.csdnimg.cn/20200302143728717.png
[20200302143858618.png]: https://img-blog.csdnimg.cn/20200302143858618.png
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