Generally Object should only be used when dealing with a collection of elements of disparate or unknown type . This then usually is followed by instanceof and cast statements. Many APIs return Object when then can provide disparate types and some of this is a holdover from Java 4 and older prior to generics.
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A class is a non-primitive or user-defined data type in Java, while an object is an instance of a class . A class is a basis upon which the entire Java is built because class defines the nature of an object.
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An object, in object-oriented programming (OOP), is an abstract data type created by a developer . It can include multiple properties and methods and may even contain other objects. In most programming languages, objects are defined as classes. Objects provide a structured approach to programming.
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When you do work in Java, you use objects to get the job done . You create objects, modify them, move them around, change their variables, call their methods, and combine them with other objects. You develop classes, create objects out of those classes, and use them with other classes and objects.
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Object-oriented programming An object is an abstract data type with the addition of polymorphism and inheritance . Rather than structure programs as code and data, an object-oriented system integrates the two using the concept of an “object”. An object has state (data) and behavior (code).
Read moreWhat is an object and class in Java?
In object-oriented programming technique, we design a program using objects and classes. An object in Java is the physical as well as a logical entity, whereas, a class in Java is a logical entity only .
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Java Classes/Objects Java is an object-oriented programming language. Everything in Java is associated with classes and objects, along with its attributes and methods. For example: in real life, a car is an object . The car has attributes, such as weight and color, and methods, such as drive and brake.
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