A class in Java is a blueprint for creating objects. It defines a new data type that contains variables (attributes) and methods (functions) to manipulate those variables. Classes are the fundamental building blocks of Object-Oriented Programming (OOP) in Java, allowing developers to encapsulate data and behavior together in a single entity.
By using classes, Java promotes code reusability and modular programming, leading to better-organized and maintainable code. A class can also inherit properties and methods from another class, enabling code reuse and the creation of hierarchical relationships between classes.
Here is a simple example of a Java class:
public class Dog {
// Attributes
String name;
int age;
// Constructor
public Dog(String name, int age) {
this.name = name;
this.age = age;
}
// Method
public void bark() {
System.out.println(name + " says: Woof!");
}
}
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