I am doing homework of making a simple calculator using java and interface in java. but the class that implements java gives error saying here is the code Answer There are a couple of issues here. First, since BasicCalculator is a public class, it needs to be defined in its own file named BasicCalculator.java…
Tag: abstract
How to get the class of a static object attribute
I have a parent class Tile and inherited classes Walltile, FloorTile, EntityTile. Each inherited class have BufferedImage attributes that is related with its name. I instantiate Tile and then i cast to the specific class, like: But i need to know if this Tile object is WallTile, FloorTile or EntityTile. For t…
How to present abstract class which has relationship with interface class in class diagram
I have to do diagram with minimum of one abstract class and interface.I though to be a good idea to implement the interface class here. My table is customer which is the abstract class.The interface …
Java override non abstract method as abstract in extended class
So I have a non-abstract method onStop inside the base class. Is it acceptable to make it abstract in the extented MyTask? The aim is to force the onStop to be implemented by classes that extend the …
abstraction can be done without inheritance? java
Is abstraction possible without inheritance? This is my code Please note above, how i: did not extend the class “what” from abstract class “whatever” and yet the code runs perfectly with no errors Did not declare class “what” as abstract (since it’s not declaring the …