从oracle官网获取合适的java文件（版本由个人决定）
http://www.oracle.com/technetwork/java/javase/downloads/index.html
直接双击打开![](https://wkrtcs.bdimg.com/rtcs/image?w=225.97&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"225.97","h":"25.00","dataType":"png","c":"word/media/image1.png","imgOriW":226,"imgOriH":25})
开始安装，整个安装过程都自动进行的，直接“下一步”到结束即可，推荐修改安装路径。
1. 右键【我的电脑】图标（win10为‘此电脑’）【属性】，打开系统对话框，选择【高级系统设置】选项。
![](https://wkrtcs.bdimg.com/rtcs/image?w=304.00&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"304.00","h":"327.00","dataType":"png","c":"word/media/image2.png","imgOriW":304,"imgOriH":327})
![](https://wkrtcs.bdimg.com/rtcs/image?w=428.00&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"428.00","h":"299.59","dataType":"png","c":"word/media/image3.png","imgOriW":800,"imgOriH":560})
2. 弹出‘系统属性’对话框，选择【高级】选项卡里的【环境变量】选项，打开环境变量属性框，开始配置环境变量。
![](https://wkrtcs.bdimg.com/rtcs/image?w=400.92&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"400.92","h":"492.00","dataType":"png","c":"word/media/image4.png","imgOriW":493,"imgOriH":605})
3. 配置环境变量：新建’JAVA_HOME’变量，在环境变量属性框里，点击【新建(W)…】选项，在弹出的环境变量编辑框里添加’JAVA_HOME’变量名以及JDK文件的安装路径。点击“确定”完成’JAVA_HOME’的添加。PS：D:\Program Files\Java\jdk1.8.0_111;
![](https://wkrtcs.bdimg.com/rtcs/image?w=367.07&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"367.07","h":"392.00","dataType":"png","c":"word/media/image5.png","imgOriW":619,"imgOriH":661})
![](https://wkrtcs.bdimg.com/rtcs/image?w=370.00&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"370.00","h":"105.40","dataType":"png","c":"word/media/image6.png","imgOriW":667,"imgOriH":190})
4. 配置环境变量：新增’Path’变量，在系统变量属性框里找到”Path”变量的位置，点击【编辑(I)…】按钮，添加JDK和JRE下的Bin目录所在路径，点击”确定”完成Path路径的添加。PS：D:\Program Files\Java\jdk1.8.0_111\bin; D:\Program Files\Java\jre1.8.0_111\bin;
![](https://wkrtcs.bdimg.com/rtcs/image?w=390.87&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"390.87","h":"416.09","dataType":"png","c":"word/media/image7.png","imgOriW":620,"imgOriH":660})
![](https://wkrtcs.bdimg.com/rtcs/image?w=391.49&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"391.49","h":"418.13","dataType":"png","c":"word/media/image8.png","imgOriW":529,"imgOriH":565})
5. 环境变量配置：新建”ClassPath”变量，具体步骤同”新增Path变量”，变量值添加为：.;%Java_Home%\jdk1.8.0_111\bin;%Java_Home%\jdk1.8.0_111\lib\dt.jar;%Java_Home%\jdk1.8.0_111\lib\tools.jar
![](https://wkrtcs.bdimg.com/rtcs/image?w=396.00&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_13","w":"396.00","h":"402.67","dataType":"png","c":"word/media/image9.png","imgOriW":655,"imgOriH":666})
6. 完成上述步骤，java的环境变量就配置完成了，下面检测一下我们的配置是否成功。
【win+R】打开DOS命令窗口，输入java –version
![](https://wkrtcs.bdimg.com/rtcs/image?w=396.98&md5sum=f80471f5a2b8875bd500596d5dfebc50&sign=ddb10bb3aa&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=82&ipr={"t":"img","r":"r_0","w":"396.98","h":"207.00","dataType":"png","c":"word/media/image10.png","imgOriW":982,"imgOriH":512})
到此为止，说明咱们已经配置成功了。
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