Java is a fun language. Some of the reasons to use it are: Built-in support for multi-threading, socket communication, and memory management (automatic garbage collection). Object Oriented (OO). Better portability… read more →
this() is used to invoke a constructor of the same class. super() is used to invoke a superclass constructor.
Two methods may not have the same name and argument list but different return types.
By value but in the case of objects, the value is a reference.
Use the super keyword like so: super.someMethodCall(“some string parameter” ); Note that in most cases the super keyword may be omitted.
A call to the default super class constructor is implicitly the first line of each constructor unless a different constructor is explicitly provided by the developer. So for the first… read more →
extends is the keyword used to declare that this class is a subclass of the class that follows the extends keyword. Implements is a keyword that designates this class as… read more →