Design Pattern Interview Questions
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(GOF) Java Design Patterns Mock Exams
Gang of Four (GOF) Java Design Patterns Mock Exams http://www.JavaChamp.com Open Certification Plattform Authors: N. Ibrahim, Y. Ibrahim Copyright (c) 2009-2010 Introducing JavaChamp.com Website JavaChamp.com is an Open Certification Platform. What does this mean? JavaChamp is the best place to learn, share, and certify your professional skills. We help you develop yourself in the field of computer science and programming Here are the most significant features offered by JavaChamp: Online Exams Start Online Certification Exams in SCJP, SCEA, EJB, JMS, JPA and more... Top quality mock exams for SCJP, SCEA, EJB, JMS, JPA. Start Express or topic-wise customized exam. * We offer you unlimited free mock exams * Exams cover subjects like SCJP, SCEA, EJB, JMS, JPA,.. * You can take as many exams as you want and at any time and for no charges * Each exam contains 20 multiple choice questions * You can save the exams taken in your exams history * Your exams history saves the exams you took, the scores you got, time took you to finish the exam, date of examination and also saves your answers to the questions for later revision * You can re-take the same exam to monitor your progress * Your exams history helps the system to offer you variant new questions every time you take a new exam, therefore we encourage you to register and maintain an exams history Network Find guidance through the maze, meet Study-Mates, Coaches or Trainees... Studying together is fun, productive and helps you in building your professional network and collecting leads Bookshelf JavaChamp Bookshelf full of PDF eBooks.. -
Learning Functional Programming in Scala Alvin Alexander
Learning Functional Programming in Scala Alvin Alexander A logical, step by step approach to learning functional programming Copyright Learning Functional Programming in Scala Copyright 2017 Alvin J. Alexander All rights reserved. No part of this book may be reproduced without prior written permission from the author. Disclaimer: This book is presented solely for educational purposes, and it’s also a work in progress. While best efforts have been used in prepar- ing this book, the author makes no representations or warranties of any kind and assume no liabilities of any kind with respect to the accuracy or completeness of the contents, and specifically disclaim any implied war- ranties of merchantability or fitness of use for a particular purpose. The author shall not be held liable or responsible to any person or entity with respect to any loss or incidental or consequential damages caused, or al- leged to have been caused, directly or indirectly, by the information or programs contained herein. Any use of this information is at your own risk. The advice and strategies contained herein may not be suitable for your situation. Version 0.1.1, published May 15, 2017 (The cover photo was taken on the Dalton Highway in Alaska, some- where between Fairbanks and Prudhoe Bay.) Contents 1 Changelog 1 2 Preface 3 3 Introduction (or, Why I Wrote This Book) 5 4 WhoThisBookisFor 11 5 Goals 15 6 Question Everything 23 7 Rules for Programming in this Book 33 8 One Rule for Reading this Book 39 9 What is “Functional Programming”? 41 10 What is This Lambda -
Acceptor-Connector an Object Creational Pattern for Connecting and Initializing Communication Services
Acceptor-Connector An Object Creational Pattern for Connecting and Initializing Communication Services Douglas C. Schmidt [email protected] Department of Computer Science Washington University St. Louis, MO 63130, USA An earlier version of this paper appeared in a chapter in TRACKING the book Pattern Languages of Program Design 3, edited SATELLITES STATION by Robert Martin, Frank Buschmann, and Dirke Riehle pub- PEERS lished by Addison-Wesley, 1997. 1Intent STATUS INFO The Acceptor-Connector design pattern decouples connec- WIDE AREA NETWORK tion establishment and service initialization in a distributed COMMANDS BULK DATA system from the processing performed once a service is ini- TRANSFER tialized. This decoupling is achieved with three compo- nents: acceptors, connectors,andservice handlers. A con- GATEWAY nector actively establishes a connection with a remote ac- ceptor component and initializes a service handler to pro- cess data exchanged on the connection. Likewise, an ac- LOCAL AREA NETWORK ceptor passively waits for connection requests from remote GROUND connectors, establishing a connection upon arrival of such a STATION PEERS request, and initializing a service handler to process data ex- changed on the connection. The initialized service handlers Figure 1: The Physical Architecture of a Connection- then perform application-specific processing and communi- oriented Application-level Gateway cate via the connection established by the connector and ac- ceptor components. The Gateway transmits data between its Peers using the connection-oriented TCP/IP protocol [1]. In our exam- 2 Example ple network configuration, each service is bound to a con- nection endpoint designated by an IP host address and a TCP To illustrate the Acceptor-Connector pattern, consider the port number. -
Ece351 Lab Manual
DEREK RAYSIDE & ECE351 STAFF ECE351 LAB MANUAL UNIVERSITYOFWATERLOO 2 derek rayside & ece351 staff Copyright © 2014 Derek Rayside & ECE351 Staff Compiled March 6, 2014 acknowledgements: • Prof Paul Ward suggested that we look into something with vhdl to have synergy with ece327. • Prof Mark Aagaard, as the ece327 instructor, consulted throughout the development of this material. • Prof Patrick Lam generously shared his material from the last offering of ece251. • Zhengfang (Alex) Duanmu & Lingyun (Luke) Li [1b Elec] wrote solutions to most labs in txl. • Jiantong (David) Gao & Rui (Ray) Kong [3b Comp] wrote solutions to the vhdl labs in antlr. • Aman Muthrej and Atulan Zaman [3a Comp] wrote solutions to the vhdl labs in Parboiled. • TA’s Jon Eyolfson, Vajih Montaghami, Alireza Mortezaei, Wenzhu Man, and Mohammed Hassan. • TA Wallace Wu developed the vhdl labs. • High school students Brian Engio and Tianyu Guo drew a number of diagrams for this manual, wrote Javadoc comments for the code, and provided helpful comments on the manual. Licensed under Creative Commons Attribution-ShareAlike (CC BY-SA) version 2.5 or greater. http://creativecommons.org/licenses/by-sa/2.5/ca/ http://creativecommons.org/licenses/by-sa/3.0/ Contents 0 Overview 9 Compiler Concepts: call stack, heap 0.1 How the Labs Fit Together . 9 Programming Concepts: version control, push, pull, merge, SSH keys, IDE, 0.2 Learning Progressions . 11 debugger, objects, pointers 0.3 How this project compares to CS241, the text book, etc. 13 0.4 Student work load . 14 0.5 How this course compares to MIT 6.035 .......... 15 0.6 Where do I learn more? . -
Ioc Containers in Spring
301AA - Advanced Programming Lecturer: Andrea Corradini [email protected] http://pages.di.unipi.it/corradini/ AP-2018-11: Frameworks and Inversion of Control Frameworks and Inversion of Control • Recap: JavaBeans as Components • Frameworks, Component Frameworks and their features • Frameworks vs IDEs • Inversion of Control and Containers • Frameworks vs Libraries • Decoupling Components • Dependency Injection • IoC Containers in Spring 2 Components: a recap A software component is a unit of composition with contractually specified interfaces and explicit context dependencies only. A software component can be deployed independently and is subject to composition by third party. Clemens Szyperski, ECOOP 1996 • Examples: Java Beans, CLR Assemblies • Contractually specified interfaces: events, methods and properties • Explicit context dependencies: serializable, constructor with no argument • Subject to composition: connection to other beans – Using connection oriented programming (event source and listeners/delegates) 3 Towards Component Frameworks • Software Framework: A collection of common code providing generic functionality that can be selectively overridden or specialized by user code providing specific functionality • Application Framework: A software framework used to implement the standard structure of an application for a specific development environment. • Examples: – GUI Frameworks – Web Frameworks – Concurrency Frameworks 4 Examples of Frameworks Web Application Frameworks GUI Toolkits 5 Examples: General Software Frameworks – .NET – Windows platform. Provides language interoperability – Android SDK – Supports development of apps in Java (but does not use a JVM!) – Cocoa – Apple’s native OO API for macOS. Includes C standard library and the Objective-C runtime. – Eclipse – Cross-platform, easily extensible IDE with plugins 6 Examples: GUI Frameworks • Frameworks for Application with GUI – MFC - Microsoft Foundation Class Library. -
Zend Framework 3 Cookbook
Table of Contents Introduction 1.1 About the authors 1.2 Configuration zend-config for all your configuration needs 2.1 Manage your application with zend-config-aggregator 2.2 Data Manipulation Convert objects to arrays and back with zend-hydrator 3.1 Scrape Screens with zend-dom 3.2 Paginating data collections with zend-paginator 3.3 Log and Feeds Logging PHP applications 4.1 Discover and Read RSS and Atom Feeds 4.2 Create RSS and Atom Feeds 4.3 Authentication and Authorization Manage permissions with zend-permissions-rbac 5.1 Manage permissions with zend-permissions-acl 5.2 Web Services Implement JSON-RPC with zend-json-server 6.1 Implement an XML-RPC server with zend-xmlrpc 6.2 Implement a SOAP server with zend-soap 6.3 2 Security Context-specific escaping with zend-escaper 7.1 Filter input using zend-filter 7.2 Validate input using zend-validator 7.3 Validate data using zend-inputfilter 7.4 End-to-end encryption with Zend Framework 3 7.5 Deployment and Virtualization Create ZPKs the Easy Way 8.1 Using Laravel Homestead with Zend Framework Projects 8.2 Copyright Copyright note 9.1 3 Introduction Zend Framework 3 Cookbook During the year 2017, Matthew Weier O'Phinney and Enrico Zimuel started a series of blog posts on the offical Zend Framework blog covering its components. Zend Framework is composed by 60+ components covering a wide range of functionality. While the framework has typically been marketed as a full-stack MVC framework, the individual components themselves typically work independently and can be used standalone or within other frameworks. -
Design Patterns in PHP and Laravel — Kelt Dockins Design Patterns in PHP and Laravel
Design Patterns in PHP and Laravel — Kelt Dockins Design Patterns in PHP and Laravel Kelt Dockins [email protected] Design Patterns in PHP and Laravel Kelt Dockins Dolph, Arkansas USA ISBN-13 (pbk): 978-1-4842-2450-2 ISBN-13 (electronic): 978-1-4842-2451-9 DOI 10.1007/978-1-4842-2451-9 Library of Congress Control Number: 2016961807 Copyright © 2017 by Kelt Dockins This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. -
Learning Javascript Design Patterns
Learning JavaScript Design Patterns Addy Osmani Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Learning JavaScript Design Patterns by Addy Osmani Copyright © 2012 Addy Osmani. All rights reserved. Revision History for the : 2012-05-01 Early release revision 1 See http://oreilly.com/catalog/errata.csp?isbn=9781449331818 for release details. ISBN: 978-1-449-33181-8 1335906805 Table of Contents Preface ..................................................................... ix 1. Introduction ........................................................... 1 2. What is a Pattern? ...................................................... 3 We already use patterns everyday 4 3. 'Pattern'-ity Testing, Proto-Patterns & The Rule Of Three ...................... 7 4. The Structure Of A Design Pattern ......................................... 9 5. Writing Design Patterns ................................................. 11 6. Anti-Patterns ......................................................... 13 7. Categories Of Design Pattern ............................................ 15 Creational Design Patterns 15 Structural Design Patterns 16 Behavioral Design Patterns 16 8. Design Pattern Categorization ........................................... 17 A brief note on classes 17 9. JavaScript Design Patterns .............................................. 21 The Creational Pattern 22 The Constructor Pattern 23 Basic Constructors 23 Constructors With Prototypes 24 The Singleton Pattern 24 The Module Pattern 27 iii Modules 27 Object Literals 27 The Module Pattern -
Five Considerations for Software Developers
FiveFive ConsiderationsConsiderations forfor SoftwareSoftware DevelopersDevelopers Kevlin Henney [email protected] Presented at Jfokus, Stockholm, 30th January 2008. Kevlin Henney [email protected] [email protected] Curbralan Ltd http://www.curbralan.com Voice: +44 117 942 2990 Fax: +44 870 052 2289 Agenda • Introduction • Consideration 1: Economy • Consideration 2: Visibility • Consideration 3: Spacing • Consideration 4: Symmetry • Consideration 5: Emergence • Outroduction 2 What general qualities in a software architecture help to promote its success? We can of course focus on fitness for purpose, cost of change, organisational acceptance, and so on, but are there broad considerations that can be kept in mind when looking at the structural and developmental side of an architecture? Those involved in software have a lot to keep in mind as they negotiate the worlds inside and outside of their code and the relationship between them. For those interested in improving the state of their art there are many (many) sources of specific recommendations they can use to sharpen their practice. This talk takes a step back from the busy, overpopulated and often overwhelming world of such recommendations to focus on five general considerations that can inform more detailed recommendations and specific decisions. Introduction StructuralSoftwareStructural engineering engineering engineering is is theis the the science science science an and dand art art art of of designingof designing designing and and and making, making, making, with with with economyeconomy and and elegance, elegance, buildings,applications, buildings, bridges, bridges, bridges, frameworks, frameworks, frameworks, and and and other other other similar similar similar structuresstructures so so that that they they can can safely safely resist resist the the forces forces to to which which they they may may be be subjected. -
Student Website Setup
MVC in JSF and Spring Overview @author R.L. Martinez, Ph.D. Complexity is one of the primary challenges that has troubled software developers from the inception of the discipline. Software systems designed to perform multifaceted tasks are by nature complicated. Furthermore, software complexity continues to increase as we ask systems to accomplish more. With that in mind, designers are regularly pursuing techniques and methods to help reduce, or at least control, complexity growth. One such approach is known as MVC or, Model- View-Controller. Model-View-Controller MVC has its origins at Xerox’s PARC (Palo Alto Research Center) during the 1970-80’s. While there, Trygve Reenskaug, a visiting researcher from Norway, along with others such as Adele Goldberg, developed the MVC pattern for conceptualizing user interface based programs. PARC was an active site at that time for other important developments such as the graphical pointing device (mouse) and Object Oriented Programming (OOP). The first published work dealing with MVC at length was a 1988 article in The Journal of Object Technology. In software development terminology, MVC is known as an architectural pattern. A pattern is a reproducible and reusable construct which appears often enough in computer science as to be recognized. Instead of solving the same problem in a variety of sub-optimal ways, a pattern attempts to overlay a design with a common architectural solution. Developers not only become familiar with its application, but can also more easily understand a solution that uses a familiar pattern. There are a number of popular web application frameworks that offer MVC architectures which include: ASP.NET, Ruby on Rails, Zend Framework, Spring-MVC, etc. -
Dependency Injection with Unity
D EPEN DEPENDENCY INJECTION WITH UNITY Over the years software systems have evolutionarily become more and more patterns & practices D ENCY complex. One of the techniques for dealing with this inherent complexity Proven practices for predictable results of software systems is dependency injection – a design pattern that I allows the removal of hard-coded dependencies and makes it possible to Save time and reduce risk on your NJECT assemble a service by changing dependencies easily, whether at run-time software development projects by or compile-time. It promotes code reuse and loosely-coupled design which incorporating patterns & practices, I leads to more easily maintainable and flexible code. Microsoft’s applied engineering ON guidance that includes both production The guide you are holding in your hands is a primer on using dependency quality source code and documentation. W I injection with Unity – a lightweight extensible dependency injection TH DEPENDENCY INJECTION container built by the Microsoft patterns & practices team. It covers The guidance is designed to help U software development teams: various styles of dependency injection and also additional capabilities N I of Unity container, such as object lifetime management, interception, Make critical design and technology TY and registration by convention. It also discusses the advanced topics of selection decisions by highlighting WITH UNITY enhancing Unity with your custom extensions. the appropriate solution architectures, technologies, and Microsoft products The guide contains plenty of trade-off discussions and tips and tricks for for common scenarios managing your application cross-cutting concerns and making the most out of both dependency injection and Unity. These are accompanied by a Understand the most important Dominic Betts real world example that will help you master the techniques. -
Designpatternsphp Documentation Release 1.0
DesignPatternsPHP Documentation Release 1.0 Dominik Liebler and contributors Jul 18, 2021 Contents 1 Patterns 3 1.1 Creational................................................3 1.1.1 Abstract Factory........................................3 1.1.2 Builder.............................................8 1.1.3 Factory Method......................................... 13 1.1.4 Pool............................................... 18 1.1.5 Prototype............................................ 21 1.1.6 Simple Factory......................................... 24 1.1.7 Singleton............................................ 26 1.1.8 Static Factory.......................................... 28 1.2 Structural................................................. 30 1.2.1 Adapter / Wrapper....................................... 31 1.2.2 Bridge.............................................. 35 1.2.3 Composite............................................ 39 1.2.4 Data Mapper.......................................... 42 1.2.5 Decorator............................................ 46 1.2.6 Dependency Injection...................................... 50 1.2.7 Facade.............................................. 53 1.2.8 Fluent Interface......................................... 56 1.2.9 Flyweight............................................ 59 1.2.10 Proxy.............................................. 62 1.2.11 Registry............................................. 66 1.3 Behavioral................................................ 69 1.3.1 Chain Of Responsibilities...................................