It’s like a contract a class must fulfill. If a class implements an interface, it must provide all the fields and methods defined in the interface. Make a quick search about “java interface” and you will find a lot resources. Happy coding 
It’s like a contract a class must fulfill. If a class implements an interface, it must provide all the fields and methods defined in the interface. Make a quick search about “java interface” and you will find a lot resources. Happy coding