Page 319 - Computer_Science_F5

Objects in Java
works on Windows, Mac, Linux,
Computer Science (b) Java programs are object-oriented: items all around us, including humans,
Raspberry Pi, etc.
In the actual world, there are a various
they are constructed around objects dogs, cars, and other objects. Each of
that have functions (methods) and these items has a behavior and a state.
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data (attributes). This encourages A dog has the following state: name,
maintainability and reusability of breed, color, and behavior: running,
the code. barking, and tail-wagging. The software
(c) Robust and secure: Java is a popular object and a real-world item share
choice for enterprise applications many similarities in their features.
since it comes with built-in Additionally, software objects possess
memory management and security a state and a behavior. Fields are used
capabilities. to store a software object’s state, and
(d) Large community: Java has a vast methods are used to display its behavior.
and active developer community, Thus, in software development, methods
that provides extensive resources and work with an object’s internal state
support for learning and development. and facilitate communication between
(e) Java is an object-oriented language objects.
that reduces development costs by Classes in Java
providing programs with a clear
structure and enabling code reuse. A class is a blueprint from which individual
(f) Programmers can easily transition objects are created. The following is an
example of a class.
from C++ and C# to Java because
of its closeness to these languages. public class Dog {

String breed;
Objects and classes in Java
int age;
Object String color;
State and behavior are attributes of objects. void barking(){
A good example would be a dog’s color,
breed, name and behaviors, such as eating, }
barking, and tail-wagging. Therefore, an }
object is an instance of a class.
A class can contain any of the following

Class variables:
Behavior or state of the object can be (a) Local variables: These are variables
described by a class, which is a kind of which are defined inside methods,
template or blueprint. constructors or blocks. The variable

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Computer Science Form 5.indd 310 23/07/2024 12:34