What information does the class class in java contain?

Java classes contain the following information: Fields: variables that store data and define object state. Methods: Define behaviors and operations, accept parameters and return values. Constructor: Initializes an object, usually with the same name as the class. Class variable: A field belonging to a class, accessed through the class name. Class method: A static method belonging to a class that can be accessed without creating an instance. Inner class: defined in other classes, can access the private members of the outer class. Inheritance and polymorphism: Subclasses inherit parent class information, and objects can respond to the same call in different ways depending on the type.

Information contained in classes in Java

A class in Java is a data type used to represent reality An entity or concept in the world. The class contains the following information:

1. Field

• Field is a variable that stores data in the class.
• They define the state of objects of this class.
• Field types can be primitive types (such as int, boolean), reference types (such as String, Object) or custom types.

2. Method

• A method is a behavior or operation defined in a class.
• They are used to perform tasks, modify object state, or retrieve data.
• Methods can take parameters and return a value or no value.

3. Constructor

• The constructor is a special method used to initialize when creating a new object the object.
• They usually have the same name as the class and are responsible for allocating memory and performing necessary initialization operations.

4. Class variables (Static Fields)

• Class variables are fields that belong to the class, not to any specific object.
• They are accessible directly through the class name and are useful for storing information common to all objects.

5. Class methods (Static Methods)

• Class methods are static methods that belong to the class, not to any specific object.
• They can be accessed directly through the class name and can be used without creating a class instance.

6. Inner Class

• An inner class is a class defined in another class.
• They can access private members of external classes and are used to group related functions together.

7. Inheritance and Polymorphism

• Inheritance allows one class (subclass) to inherit information from another class (parent class).
• Polymorphism allows an object to respond to the same method call in different ways depending on its runtime type.

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