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Beginning of the class named Slick0110a

Consider the code fragment shown in Listing 3 . (This code was extracted from Listing 1 to make it easier to discuss.)

Listing 3 . Beginning of the class named Slick0110a.
public class Slick0110a implements Game{ public static void main(String[]args) throws SlickException{AppGameContainer app = new AppGameContainer(new Slick0110a());app.start();//this statement is required }//end main

Listing 3 shows the beginning of the class named Slick0110a along with the entire main method.

An object of the interface type Game

To begin with, note that the Slick0110a class implements the interface named Game . Therefore, an object of this class satisfies the requirement for the second type of object identified as item 2 in the above list . In other words, an object of this class is an object of the interface type Game .

An object of the AppGameContainer class

Now note the first statement in the main method in Listing 3 that instantiates a new object of the class named AppGameContainer and saves that object's reference in the local variable named app . This object satisfies the requirement for the first type of primary object identified as item 1 in the above list . In other words, an object of this class is an object of the type GameContainer because the class named AppGameContainer is a subclass of GameContainer .

Tying the two objects together

The class named AppGameContainer provides two overloaded constructors, each of which requires an incoming parameter that is a reference toan object instantiated from a class that implements the interface named Game . The code in the main method in Listing 3 uses the simpler of the two overloaded constructors to instantiate a new object of the class named AppGameContainer and to save its reference in the local variable named app .

The code in Listing 3 also instantiates a new object of the class named Slick0110a and passes that object's reference to the constructor for the class named AppGameContainer . This is legal because the class named Slick0110a implements the interface named Game .

At this point, the two objects described in the above list exist and occupy memory. From this point forward, the container object knows about the game object and has access to its members.

Start the game program running

Finally, the last statement in the main method calls the start method on the new container object to cause the program to be initialized and to cause the game loop to start running.

The Game interface

One of the rules in Java programming is that whenever a new class definition inherits an abstract method declaration, either the new class definition mustprovide a concrete definition for the abstract method or the class itself must be declared abstract.

All of the methods declared in an interface are implicitly abstract. Therefore, whenever a new class definition implements an interface that declaresmethods, it inherits one or more abstract method declarations and the above rule applies.

Questions & Answers

what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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Source:  OpenStax, Anatomy of a game engine. OpenStax CNX. Feb 07, 2013 Download for free at https://legacy.cnx.org/content/col11489/1.13
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