Resolving "Java is not recognized" Error in Windows

When attempting to check Java's version on Windows 7, users may encounter the error "'Java' is not recognized as an internal or external command." This issue typically arises due to missing Java installation or incorrect environment variables.

To resolve this issue, you need to verify your Java installation and configure the necessary environment variables. Ensure that the Java Development Kit (JDK) is properly installed on your machine. Download and install the latest JDK from the Oracle website.

Once the JDK is installed, adjust your environment variables as follows:

1. Set JAVA_HOME:

   • Create a new system environment variable named "JAVA_HOME."
   • Set its value to the installation path of your JDK, e.g., "C:\Program Files\Java\jdk-11.0.15."

2. Modify PATH variable:

   • Edit the existing "PATH" environment variable.
   • Append "%JAVA_HOME%\bin" to the end of the variable's value.

Alternatively, you can directly add the path to the JDK bin folder to the PATH variable without using JAVA_HOME. However, this approach becomes cumbersome if multiple Java versions are present on the system.

By configuring the environment variables correctly, you can ensure that the system recognizes and utilizes the installed Java.