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Unit 3 Java

Features Of OOP   Object Objects are the entities through which we perceive the world around us. We naturally see our environment as being composed of things which have recognizable identities and behavior. The entities are then represented as objects in the program. In OOP system, an object is the run time entity i.e. a region of storage with associated semantics. In OOP "Object" usually means an instance of a class.   Example of Class and Object public class Main //Main is name of class {    int num = 15;      public static void main(String[] args) {      Main myObj1 = new Main();      Main myObj2 = new Main(); // myObj1 and myObj2 are object of main class      System.out.println(myObj1.num);      System.out.println(myObj2.num);    } }   Abstraction Abstraction means showing only the essential details and hiding the unnecessary parts . It helps reduce co...
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Unit 3 SDLC

  Software Development Life Cycle The Software Development Life Cycle (SDLC) is a structured process used for developing high-quality software systematically. It defines steps to follow, from the initial planning to the final deployment and maintenance of software. Need of SDLC (Software Development Life Cycle) SDLC provides a structured approach to software development, helping developers follow a clear, step-by-step process. It improves project management by allowing better planning, scheduling, and tracking of resources, time, and progress. It helps in early detection of errors , reducing the cost and effort required to fix issues later in the development cycle. SDLC enhances communication between developers, testers, clients, and stakeholders by maintaining clear documentation and process flow. It ensures quality assurance by including validation and testing activities at every stage of development. It helps ...