Simple and rough Java environment variable settings.

The first step: Open the environment variables in the system settings, create a new classpath in the user variable, insert the Tools.jar and Dt.jar two paths under the Lib directory under the JDK, and divide them in the middle.

Step Two: Create a new java_home system variable and insert the JRE's installation path value, such as C:\Program Files (x86) \java\jre1.8.0_144.

Step three: Locate the system variable path and insert a JDK's installation path value, such as C:\Program Files\java\jdk1.8.0_144\bin (exact to the bin directory).

Then you're done, open cmd, and enter javac,java,java-version to see if the installation is successful.

Simple and rough Java environment variable settings.