Win10 builds a java web development environment, including download, installation and configuration steps

1. Download address

jdk and jre official website: www.oracle.com/technetwork/java/javase/downloads/index.html

## Select the jdk you need to download according to your system. 32-bit systems correspond to x86, 64-bit systems correspond to x64

## After downloading, you will get an executable file, click Run to enter the installation

2. Installation

## 1. Install JDK

Select the path you want to install to, Note that this path cannot contain Chinese names

##Here we can select the directory we want to install to through "Change", and then click Next.

Here we have only installed jdk. The installation wizard will check that you have not installed jre, and then prompt you to install jre

2. Install JRE

Choose a folder you like, be careful not to use this folder It is the jdk installation directory, otherwise it will overwrite the jre directory under the

jdk directory

Here we choose to install it in the same directory as the JDK. Click Next to complete the installation, and then it will prompt that the installation has been successful

3. Attach the folder I installed

##3. Environment variable configuration

My Computer → Right-click → Properties → Advanced System Settings → Environment Variables

1. Create a new system variable with the variable name "JAVA_HOME", and the variable value is "E:\Development\Java\jdk1.8.0_92" (the jdk installation directory, modified according to the personal installation directory)

## 2.Create a new variable named " CLASSPATH", the system variable whose variable value is ".;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;", note that there are dots and semicolons in front

## 3. Open"Path" system variables, click New, add "%JAVA_HOME%\bin" and "%JAVA_HOME%\jre\bin "Two system variables. Path allows the system to identify java commands in any path

(This may not be the case after Path is opened under win7 After opening the page, you need to manually enter the two variable names. Each variable name can be separated by English semicolon)

4. Authentication

     

  After clicking Save, press window +R or click run and enter cmd to open the command line window

## Enter

respectively If both java, java -version and javac are running normally, it means that java has been installed correctly, where java -version represents the version of java you installed

If a prompt statement such as "javac is not an internal or external command" appears, please double-check whether your environment variables are correctly configured, or whether the JDK and JRE installation directories are duplicated. If they are duplicated, You can choose to run the downloaded jdk installer again to reinstall.

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