Creating Classes and Objects
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In Java, a class is a blueprint for creating objects. Think of a class as a template that defines the structure and behavior of objects by specifying their fields (also called attributes or properties) and methods (functions that operate on the data). An object is an instance of a class, representing a specific entity with its own values for the fields defined in the class. To create an object, you use the new keyword followed by a call to the class's constructor—a special method that initializes the object's fields.
Person.java
Main.java
12345678910111213package com.example; public class Person { // Fields (attributes) String name; int age; // Constructor public Person(String personName, int personAge) { name = personName; age = personAge; } }
Once you have created an object, you can access its fields and methods using dot notation. For example, after creating a Person object, you can retrieve or update the name and age fields by referencing the object, like person1.name or person1.age. This approach allows you to work with the data stored in each individual object and call its methods to perform actions or calculations specific to that object.
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