Server problems can be highly technical but if you identify the problem correctly, the solutions are almost always fairly simple. If you are experiencing server trouble, then you first need to diagnose what is causing it. If you use a router device, then you might not be using the correct forwarding port. If you enter the java command and your system does not recognise it, then you have two options. You can either enter the correct path yourself or enter it manually. You have to be extremely careful when entering the path manually.
If none of these options works, then you probably have a faulty installation and might have to reinstall Java in your computer. If you find the java path, you need to open the start server.bat file and replace the name=start server.bat text with the correct java.exe path used to access the program on your system. Once you are done with either option, save your changes and restart the system. Double-check to ensure that you have entered the correct path because a single mistake would mean going through the process all over again. Your server should not give you any trouble after this.
If you are using Minecraft and players cannot access the site, you may have to use the mod installer to update the server. A quicker way is to simply rename the world folder and create a new world without discarding the old one. This will help you diagnose if something in the old world is causing the server to malfunction. Sometimes, the cause of server problem is a poor plugin. To investigate this problem, remove all plugins one by one. If the server starts to function normally after removing the plugins you need to identify the plugin causing the problem. To do this, simply reconnect the plugins one by one and observe the functioning of the server. The faulty plugin is the one that causes the server to stop as soon as you add it to the system. All you need to do next is to find an update for the damaged plugin and install it on your system.
Another possible cause of a poorly functioning server might be the firewall you are using. While firewalls are a great help in protecting your software against malicious attacks, sometimes they are configured in a way that prevents genuine data from coming through. A simple change in configuration can make the server function normally. If you use Windows as your operating system, then the Windows Firewall is your default firewall and is probably preventing data packets from arriving into your system and affecting service quality. A simple thing you can do is to disable the firewall and see if it solves the problem. If the server starts functioning normally, then you need to configure it according to your needs to allow the server to work properly. You will have to work by the trial and error approach to find the configuration that works best for your system.