Methods and Encapsulation PDF
Document Details
Uploaded by Deleted User
Tags
Summary
This presentation covers methods and encapsulation in object-oriented programming. It explains concepts such as return types, method names, parameters, method body, method invocation, and access modifiers. The key principles and benefits of encapsulation are also discussed.
Full Transcript
Methods and Encapsulation CMSC 203 – Object-Oriented Programming Module 3 Method A block of code within a class that performs a specific task. It can take input parameters and return a value. Components of a Method Return Type Method...
Methods and Encapsulation CMSC 203 – Object-Oriented Programming Module 3 Method A block of code within a class that performs a specific task. It can take input parameters and return a value. Components of a Method Return Type Method Name Parameters Method Body Method Invocation The process of calling a method on an object or class to execute that code within it. Components of Method Invocation Object Name Method Name Arguments Key points A method can be invoked multiple times with different arguments. Methods encapsulate behavior, promoting code reuse. In static methods (like those defined with static in Java), you invoke the method using the class name rather than an object instance. Access Modifier Control the visibility and accessibility of classes, methods, and variables in object-oriented programming. Primary Access Modifier Public Access Modifier Any class can access public members. Any method in any class can call a public method. Any class can access a public variable. Private Access Modifier Only accessible within the class where they are defined. Only methods within the same class can call private methods. Only accessible within the class where the variable is declared. Protected Access Modifier Accessible within the class and by subclasses (derived classes). Accessible within the class and by subclasses. Accessible within the class and by subclasses. Encapsulation Fundamental principles of Object-Oriented Programming. Refers to the bundling of data and methods that operate on the data into a single unit, or class. Restricts direct access to some of the object’s components, which can prevent the accidental modification of data. Key Principles Data Hiding Access Control Modularity Benefits of Encapsulation Data Protection Improve Maintainability Enhanced Security Modularity and Reusability Clearer Code Structures THANKS! CREDITS: This presentation template was created by Slidesgo, and includes icons by Flaticon, and infographics & images by Freepik
