To uninstall Java on a Windows or macOS computer, you can use the Java Uninstall Tool or follow these steps:
Open the Control Panel on your computer.
On Windows, go to the "Programs" category and click "Uninstall a program". On macOS, go to the "Programs" category and click "Uninstall programs".
Find the Java runtime or JDK that you want to uninstall in the list of installed programs, and click "Uninstall" or "Delete".
Follow the prompts to uninstall Java from your computer.
Note: If you are using a different operating system, such as Linux, the steps to uninstall Java may be different. You may need to use a package manager or remove the Java installation manually.
It is also a good idea to remove any remaining Java directories or files that may have been left behind after the uninstallation process. These can typically be found in the Program Files directory on Windows or the /Library/Java directory on macOS.
After uninstalling Java, you may also want to check your system's PATH environment variable to ensure that it does not contain any references to the Java installation. This will prevent any issues with running Java commands or using Java applications after the Java runtime has been removed.