As we stated earlier, you just store one copy of a class (including methods) for use with each object. You store separate fields (variables defined just after class declaration) for each object. The compiler access the correct object’s data fields because you implicitly pass a ‘this’ reference to class methods. In general sense, ‘this’ reference removes confusable states occurs with object declarations. If you have more than one objects based on the same class which has class data fields, then java use implicitly ‘this’ reference to keep in track of fields of each object.
You don’t want to worry about this “this” because java will implicitly do most of it. We will bother about “this” later where we want to explicitly define it.
Tip: he Java keywords this and super are closely related to the method invocation. The use of this and super keywords is twofold. They can be used:
As a reference to access the instance members or the superclass members (as we have seen earlier in section 1.4.2)
OR
As a method name for calling the constructors of the class or its superclass
The this keyword used within an instance method refers to the instance on which the method is called upon.
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