Java Tutorial [01.01] Objects and Classes

The Java Technology Stack: Objects and Classes

What are objects and classes?

In Java, an object is an entity with properties and behavior, while a class is a set of specifications or blueprints that define operations and properties. Classes contain data members (variables) and methods (functions), and objects are instantiations of classes.

How to create an object?

To create an object, a class must first be defined. Here is an example of a simple Java class and object:

public class Car {
   
    
    
    //成员变量
    private String make;
    private String model;
    private int year;