The next day, I woke up and tried to uninstall another old version named "Java 8 Update 40" by using Revo Uninstaller. The uninstallation took a while then I noticed that my PC started running slow. So I went to the Task Manager and I saw that "Java Web Start Launcher" appearing again and again. It kept on creating a lot of them. Every time I scroll down, I see more and more processes of it. So I went to a task manager alternative named "Process Explorer" and tried to kill the Process Tree. It didn't work. It just kept on creating more. They took a lot of my CPU usage. My computer went slow so I held down the power button of my laptop to shut down my PC.