sachin__.txt

Classes and Objects Basics Cohesive units of code that model real-world entities and their actions. Creating Constructors in Java Special functions that are automatically called when an object is created. Used to initialize properties and perform necessary actions. Understanding Destructors in Java...

Classes and Objects Basics Cohesive units of code that model real-world entities and their actions. Creating Constructors in Java Special functions that are automatically called when an object is created. Used to initialize properties and perform necessary actions. Understanding Destructors in Java Special functions that are automatically called when an object is destroyed. Used to free memory and perform cleanup tasks. Function Overloading in Java Defining multiple functions with the same name but different parameters. Allows for simpler syntax and improved code readability. Polymorphism in Java Allowing different types to be treated as the same type through inheritance or interfaces. Provides a more generic notation and simplified handling. Accessing Properties and Methods Accessing properties using the. (dot) notation. Invoking methods using the. (dot) notation and accompanying parentheses. Access Modifiers in Java Define the scope and visibility of classes and members. Examples: public, protected, private. Encapsulation in Java Restricting access to internal components while providing a simplified interface. Enhances code robustness and decoupling. Static Keywords and Properties static keyword for shared properties and methods within a class. Used to enforce a single instance of a property across multiple objects. Abstract Classes and Methods Incomplete classes and methods that serve as base templates. Cannot be instantiated and must be subclassed in order to be used. Inheritance in Java Programming Subclassing a parent class to gain its properties and methods. Improves code reusability and promoting modularity. Types of Inheritance in Java Single Inheritance Multiple Inheritance (via Interfaces) Multilevel Inheritance Hierarchical Inheritance Hybrid Inheritance Organizing Code Systematically Proper naming conventions Using packages to group related classes Subclassing and encapsulation provide a better structure. Compile Time Polymorphism Explained Polymorphism defined at compile-time using overloaded functions. Based on the type of the reference, the correct overloaded function is called. Interface and Multiple Inheritance An interface is an abstract class that only defines method prototypes. Allows for multiple inheritance in Java. Classes implementing an interface must provide concrete implementations for its methods. Instruction Extraction and Data Feeding Techniques to extract relevant information from a class, method or object. Data feeding refers to providing necessary information to an object to function properly. Packaging in Java Contributes to a better code organization and easier management. Packages reduce namespace pollution and help with code reusability.