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Abstract class is a class that has no instances. An abstract class is written with the expectation that its concrete subclasses will add to...

Polymorphism literally means taking more than one form. Inheritance, Overloading and Overriding are used to achieve Polymorphism in java ...

Inheritance is a relationship among classes, wherein one class shares the structure or behaviour defined in another class Inheritance is...

Encapsulation is the process of compartmentalising the elements of an abtraction that defines the structure and behaviour Encapsulation ...

Abstraction defines the essential characteristics of an object that distinguish it from all other kinds of objects Abstraction is way of...

ChatGPT 2. Interface Definition: An interface in Java is a reference type, similar to a class, that can contain only constants, method signa...

Object is an instance of a class

Class is a template for a set of objects that share a common structure and a common behaviour.

Introducing the Decorator Design Pattern http://www.youtube.com/watch?v=Xk8durvtiys&feature=channel&list=UL wrapper classes u...

Concrete class - Provides implementation for all its methods & also for methods from extended abstract classes or implemented interface...

Strategy Class can be an interface or an abstract class There are a set of classes which extend abstract class or implement interface S...

Intent Iterator Pattern provides a way to access the elements of an aggregate object sequentially without exposing its underlying representa...

Dependency is normally created when you receive a reference to a class as part of a particular operation / method. Dependency indicates th...

Dependency is a weaker form of relationship which indicates that one class depends on another because it uses it at some point of time On...

For instance, a flight class is associated with a plane class bi-directionally

In java when one class implements and interface it is called realization, the class realizes the interface. In UML modeling, a realizatio...

The generalization relationship is also known as the inheritance or "is a" relationship. When one class inherits or extends anot...

composition vs aggregation Composition is more restrictive. When there is a composition between two objects, the composed object canno...

Composition is a stronger variant of the "owns a" or association relationship composition is more specific than aggregation. It...

Aggregation is a variant of the "has a" or association relationship; aggregation is more specific than association. It is an as...

stereotypes are used to show how this element of a class is specialized 4.03_Stereotypes http://www.youtube.com/watch?v=g7O6R8loCss&...

Visibility To specify the visibility of a class member (i.e., any attribute or method) All the Visibility of a Class Members Are: ...

a class can be associated with itself

When two objects are associated, one object will be having a variable that points to the other object  Association is a relationship t...

object oriented software system usecase view(requirements of system) design view process view implementation view deployment view

UML,unified modelling language visualizing,constructing and documenting all parts of system

UML Views of the World Use Case Model Static Models Interaction Models Use Case Model use case diagram use cases ...

RUP presents Software Architecture 4+1 views logical view implementation view use-case view process view deployment view RUP ,ra...

Define UML? Unified Modeling Language, a standard language for designing and documenting a system in an object-oriented manner It has...

8 Core Beliefs of Extraordinary Bosses 1. Business is an ecosystem, not a battlefield. 2. A company is a community, not a machine. 3....

5 Toxic Beliefs That Ruin Careers 1. My self-worth is based on what others think of me. 2. My past equals my future. When some people...

Bouncing Back from Job Loss: The 7 Habits of Highly Effective Job Hunters if you look at job loss, like any setback from an enlarged persp...

In software engineering, a class diagram in the Unified Modeling Language (UML) is a type of static structure diagram that describes the st...

New dimensions in UML2.0 The major difference is the enhancement and additional features added to the diagrams in UML2.0 Sequence di...

JavaServer Pages Standard Tag Library (JSTL) encapsulates as simple tags the core functionality common to many Web applications. JSTL has su...

Denormalization Denormalization on the contrary is the process of adding redundant data to speed up complex queries involving multiple ta...

when you use new String("...") you get a new string object. In this example both string literals refer the same object: Strin...

 it’s important not to neglect the mental and emotional preparation that is also necessary Rehearse anticipate some of the questions the ...

Explain the difference between 'my' and 'local' variable scope declarations? Both of them are used to declare local vari...

@variables A variable is defined by the ($) symbol (scalar) the (@) symbol (arrays) the (%) symbol (hashes) Scalar variables ar...