How to install jdk8: First double-click the exe file and install it step by step according to the default settings; then right-click "This Computer-Properties-Advanced System Settings-Advanced-Environment Variables-New"; then create a new environment variable JAVA_HOME; finally configure the environment variable Path.

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Win10 system installation jdk8 whole process

Download the installation file

The installation and configuration of jdk is the first step in learning Java. The specific process is recorded below. First download the corresponding version according to your system. Download addresshttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

二 Installation

Double-click the exe file and install step by step according to the default settings.

Three configuration environment variables

Right-click "This Computer" - "Properties" - " Advanced System Settings" - "Advanced" - "Environment Variables" - "New":

## 2. Create a new environment variable CLASSPATH

Variable name: CLASSPATH

Variable value:. ;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar You need to pay attention to the ".;" in front of the variable value

3. Configure the environment variable Path

Double-click Path, click New, add "%JAVA_HOME%\bin"; click New again, add "%JAVA_HOME%\jre\bin".

## Please pay special attention here. The win10 environment variable values ????are line by line. Do not click New directly. Add "%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin ;", otherwise a "javac is not an internal or external command" error will appear.

At this point the environment configuration is complete~

Four command line windows to view

Win R key The run window pops up, enter the cmd command to open the following window to test whether your Java is successfully installed; test the command Java. If the following message appears, it proves that the Java environment has been configured successfully.

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