In java: ( We are using this Book: Starting out with java by Tony Gaddys) a)...
In java: ( We are using this Book: Starting out with java by Tony Gaddys)
a) What does a no-arg constructor for a string do?
b) How do you subclass a given class?
Homework Answers
1) null
Default constructor or no-arg constructor is called when there are no user defined constructors in the class. And it assigns default values to the class members and for string it will assign null.
2) extends keyword
Class A extends B
Java has inheritance concept where we can inherit one class to another class, and here the class being inherited (i.e. we are sub classing the class) is called base class or super class and the one which is inheriting it is called subclass. In above example B is superclass (which we are sub classing) and A is subclass which is inheriting class B using keyword extends.
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In java: ( We are using this Book: Starting out with java by
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