JDK 安装与环境变量配置详细教程

雨点打透心脏的1/2处 2023-09-24 08:47 85阅读 0赞

1、JDK? ? jre-8u161-windows-x64.exe?下载

?所有平台：?http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

选择 “Accept License Agreement”

根据系统选择对应的安装文件，64位系统安装64位JDK

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程][JDK _ _ _JDK _ _]

2、JDK安装过程

?a、双击运行安装文件?jdk-8u144-windows-x64.exe

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_02][JDK _ _ _JDK _ _ _02]

b、指定jdk安装目录?C:\\Java\\jdk1.8.0\_144? ?然后点击“下一步”

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_03][JDK _ _ _JDK _ _ _03]

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_04][JDK _ _ _JDK _ _ _04]

c、指定JRE安装目录 C:\\Java\\jre1.8.0\_144，点击“下一步”

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_05][JDK _ _ _JDK _ _ _05]

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d、安装完成，点击“关闭”

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_07][JDK _ _ _JDK _ _ _07]

3、JDK 环境变量配置

? a、新建 JAVA\_HOME 环境变量，JAVA\_HOME=C:\\Java\\jdk1.8.0\_144

? b、修改 path 环境变量，在path变量尾部添加%JAVA\_HOME%\\bin

? c、新建 classpath 环境变量 ，classpath=.;%JAVA\_HOME%\\lib;%JAVA\_HOME%\\lib\\dt.jar;%JAVA\_HOME% ools.jar

? 说明：(jdk 需要配置三个环境变量；?1.5之后可以不再设置classpath，但建议保留classpath设置)

开始菜单 -> “计算机” -> 右键 -> 属性? 打开 “系统面板”

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点击 “高级系统设置” 打开 “系统属性”窗口，点击 “环境变量” 打开“系统环境变量”窗格

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_09][JDK _ _ _JDK _ _ _09]

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_10][JDK _ _ _JDK _ _ _10]

在“系统环境变量”窗格，点击“新建”，打开“新建环境变量”对话框

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_11][JDK _ _ _JDK _ _ _11]

新建JAVA\_HOME 环境变量，点击“确定”

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_12][JDK _ _ _JDK _ _ _12]

找到 path 变量，点击“编辑”

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_13][JDK _ _ _JDK _ _ _13]

在path变量尾部添加 ;%JAVA\_HOME%\\bin ，点击确定

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_14][JDK _ _ _JDK _ _ _14]

新建 classpath 变量，设置?classpath=.;%JAVA\_HOME%\\lib;%JAVA\_HOME%\\lib\\dt.jar;%JAVA\_HOME% ools.jar

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_15][JDK _ _ _JDK _ _ _15]

连续点击“确定”，完成环境变量配置

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_16][JDK _ _ _JDK _ _ _16]

4、验证 java 和 javac 命令

? ?a、打开cmd命令行窗口，输入 java ，回车执行

![JDK 安装 与环境变量配置 详细教程\_JDK 安装 与环境变量配置 详细教程\_17][JDK _ _ _JDK _ _ _17]

? b、输入javac 命令，回车执行

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得到以上java 和javac命令输出表明jdk安装配置成功

[JDK _ _ _JDK _ _]: https://img-blog.csdn.net/20180123143912668?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _02]: https://img-blog.csdn.net/20180123121828044?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _03]: https://img-blog.csdn.net/20180123122057534?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _04]: https://img-blog.csdn.net/20180123122155785?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _05]: https://img-blog.csdn.net/20180123122413154?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _06]: https://img-blog.csdn.net/20180123122456493?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _07]: https://img-blog.csdn.net/20180123122543325?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _08]: https://img-blog.csdn.net/20180123122745822?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _09]: https://img-blog.csdn.net/20180123123231300?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _10]: https://img-blog.csdn.net/20180123123417787?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _11]: https://img-blog.csdn.net/20180123123737598?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _12]: https://img-blog.csdn.net/20180123123847493?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _13]: https://img-blog.csdn.net/20180123123956056?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _14]: https://img-blog.csdn.net/20180123124055834?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _15]: https://img-blog.csdn.net/20180123124156173?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _16]: https://img-blog.csdn.net/20180123124254784?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _17]: https://img-blog.csdn.net/20180123112434700?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[JDK _ _ _JDK _ _ _18]: https://img-blog.csdn.net/20180123112510532?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3JpdGU2/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast