I. Introduction
JDK stands for Java Development ToolKit, is a Java language development kit. JAVA JDK is the core, including the Java Runtime Environment (Java Runtime Envirnment), a bunch of Java tools (javac / java / jdb, etc.) and Java-based libraries (Java API that is included rt.jar)
Second, download
First Quguan network download JDK: point me into the official website , select the corresponding version of the following to jdk-13.0.0.2 win64-version, for example
Third, the installation JDK
Double-click the installation package, you can have the next step, you need to configure the environment variables after the installation is complete:
(1) Right 'My Computer "->" Properties "->" Advanced System Settings ", click Environment Variables, and then start the configuration environment variable.
(2) Click the New button below the system variable, the variable name JAVA_HOME (on behalf of your JDK installation path), the value corresponds to the installation path of your JDK.
(3) Select the system variable named Path, click Edit, the value added at the end in a variable;% JAVA_HOME% \ bin;
Fourth, verification
Verify the configuration is successful: WINDOWS + R keys, type: cmd; enter into the command line interface : java -version, or if prompt 'java' is not an internal command, then you can try to restart the computer.