JAVA
is an object oriented progamming environment. The thrust of JAVA is
in the creation of objects. In reality, objects can perform a noticeable
action or behavior know as methods(). For example, a car engine is
an object, you can see its action (method) such as the rotating action
which provides power for the car. Another example can be a dog. A
dog is an object, where its actions (methods) are barking, eating,
guarding the territory.
To illustrate
the discussion using JAVA programming, we then translate the above
example into JAVA psuedo codes. For an example, we will use objects,
Kate and Larry, both human beings and their two(2) animal dogs Husky
and Boomer. Larry and Kate eats dinner. Both of them watch tv. Kate,bored
of the movieShow,slept afterwards. Larry felt something unusual and
verified his dogs if the dogs are barking. If the dogs are barking,
then look around otherwise stops watching TV and fed the two dogs.
Later, Larry sleeps afterwards..
public
class
earth{
//
when the earth was created man and woman was
// created namely Larry and Kate
// After human beings are created, animals are created too
humanBeing
Larry, Kate;
// Larry and Kate are supposed to be human
beings
Larry
= new humanBeing("male","6ft","200lbs");
Kate = new humanBeing("female","5.6ft","110lbs");
// Larry and Kate are created and now are
now humanBeing
// objects(with distinct qualities) present in the
object earth
// Their qualities are defined during the instance of their
// creation
animalDog Husky, Boomer;
// Husky and Boomer are supposed to be animal
dogs
Husky
= new animalDog("Terrier","playfull");
Boomer = new animalDog("chow-chow","reserved");
// Two dogs are created with different qualities
in an
// instance
public
static void
main(String[] arg){
// This is their life
Kate.eat("Big
Mac Hamburger");
Larry.eat("Chicken Nuggets");
Larry.watchTV("MTV");
Kate.watchTV("MTV");
Kate.sleep();
Larry.feed(Husky);
Larry.feed(Boomer);
Larry.checkDog(Husky);
Larry.checkDog(Boomer);
Larry.sleep();
}
}
The
humanBeing object
public
class humanBeing
{
private
property gender,height,weight;
humanBeing(property
g,property h, property w){
gender
= g;
height = h;
weight = w;
}
public
void
eat(food someType){
mouth
= someType;
... program how to eat food follows here
}
public
void
watchTV(movieShow someShow){
if
(TV.powerON()
= false){
TV.turnpowerON();
}
else
{
...
do nothing just watch the show;
}
if(TV.movieShow
!= someShow){
TV.voiceActivate(someShow)
}
else
{
...
relax and enjoy the show
}
}
public
void
endWatchTV(){
if(TV.powerON
== true){
TV.turnpowerOFF();
}
else
{
...
its already off don't stare at it!!!
}
}
public
void
sleep(){
...
dont forget to brush your teeth
... take a short bath
... zzzzzzzz
}
public
void
feed(animalDog dogName){
...
prepare the food
dogName.eat("bone");
}
public
void
checkDog(animalDog dogName){
if
(dogName.bark==true){
lookAround();
}
else
{
...
ah never mind, don't bother at all
}
}
}
The
animalDog object
public
class
animalDog{
private
qualities breed,attitude;
animalDog(quality
b, quality a){
breed
= b;
attitude = a;
}
public
static boolean
bark(){
if
(smellSomething())or(hearSomething())or feelMovement())
{
return
true;
}
else
return fase;
}
public
static boolean
smellSomething(){
...
a program how to smell
if smell something unusual return true
else return false
}
public
static boolean
hearSomething(){
...
a program of dog using his ear and listen to environment
if heard of strange sound return true
else return false
}
public
static boolean feelSomething(){
a
program how to uses other senses for feeling.
returns true if feel something strange
return false if feel nothing strange
}
public
void
eat(food dogfood) {
mouth
= dogfood;
digest();
drink();
}
}
