What is the method for installing JDK and configuring environment variables?

1 year ago
Emily Johnson
2 minutes

The installation and configuration of environment variables for the Java Development Kit (JDK) are as follows:

  1. Download the JDK installation package: Go to the official Oracle website (https://www.oracle.com/java/technologies/javase-jdk14-downloads.html) and download the JDK installation package suitable for your operating system.
  2. Install JDK: Double-click the downloaded JDK installation package and follow the installation wizard to complete the installation of JDK. During the installation process, you can choose the installation path, which is typically located in C:\Program Files\Java\ directory by default.
  3. Set up environment variables: Open the computer’s “Properties” (right-click on “This PC/My Computer,” select “Properties”), click on “Advanced system settings,” click on “Environment Variables.”
  4. Go to “System Variables” and locate the variable named “JAVA_HOME.” If it does not exist, click on the “New” button to create a variable named “JAVA_HOME” and set its value to the JDK installation path, for example: “C:\Program Files\Java\jdk1.8.0_221.”
  5. In “System Variables,” locate the variable named “Path.” If it does not exist, click the “New” button to create a variable named “Path” and set its value to “%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;”.
  6. In the “System Variables” section, locate the variable named “CLASSPATH.” If it does not exist, click the “New” button and create a variable called “CLASSPATH” with the value set to “.;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar”.
  7. Click the “OK” button to save and close the environment variable configuration.
  8. Open the command prompt or terminal window, and type in the command “java -version.” If the Java version information is displayed correctly, it means that the JDK installation and environment variable configuration were successful.

Please note that the installation path and version number in the above steps may vary depending on the JDK version you are using. Please adjust according to the JDK installation package you downloaded and your specific situation.

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