Exercises Java Exercises Java

Attributes and Methods

Monday, December 4, 2023

Within the realm of object-oriented programming (OOP) in Java, a deep understanding of attributes and methods is essential. These elements are the fundamental building blocks that enable the creation of classes and objects and are vital for modularity and efficiency in software development.

Attributes

Attributes are variables that characterize the properties or features of an object. In Java, attributes are defined within a class and represent the state of objects created from that class. These can be of different data types, such as strings, integers, booleans, among others.

public class Person {
    // Attributes
    String name;
    int age;
    boolean isStudent;
}

In this simple example, the Person class has three attributes: name (string), age (integer), and isStudent (boolean).

Methods

Methods are functions that represent the actions an object can perform. These functions are defined within the class and describe the behavior of the object. Methods can perform calculations, modify attribute values, interact with other objects, and more.

public class Circle {
    // Attribute
    double radius;

    // Method to calculate the area of the circle
    double calculateArea() {
        return Math.PI * Math.pow(radius, 2);
    }
}

In this case, the Circle class has an attribute radius and a method calculateArea() that returns the area of the circle.

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