Is there a if exists statement in Java programming?

Answer 1

In java you will be handling objects. An object, for example, can be a Person, that will hold the first and last name of that someone and maybe an address or phone number. Each object can be like a mini java program in that it can have methods (or functions) of its own. However, an object generally needs to be instantiated before you can access the fields or methods of that function. If it is not you will get a runtime error that may kill your program. To check if the object has been instantiated (that is, if it exists) you would call:

if(person null) which makes it evaluate the opposite way.