Java environment variable configuration (windows), java environment variable

Java environment variable configuration (windows), java environment variable

1. Download jdk.

Baidu: jdk download

Search Results:

 

2. Download and install jdk.

(Next, next ,......)

3. Check whether the installation is successful.

Open cmd and enter java:

4.Configure Environment Variables

Computer/(right-click)/properties/advanced system settings/Environment Variables

New system variable

JAVA_HOME

Variable valueFor jdkInstallation path

Modify system variables

Path

Add to bin folderRelativePath

% JAVA_HOME % \ bin; % JAVA_HOME % \ jre \ bin

New system variable

CLASSPATH

Variable valueIt is the relative path of dt. jar and tools. jar files in the lib folder.

. % JAVA_HOME % \ lib \ dt. jar; % JAVA_HOME % \ lib \ tools. jar

5.Check whether the configuration is successful

Open cmd and enter javac:

6. successful !!!!!!!