Anghel Leonard's Books

The The Complete Coding Interview Guide in Java

An effective guide for aspiring Java developers to ace their programming interviews

By: Anghel Leonard

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The The Complete Coding Interview Guide in Java

An effective guide for aspiring Java developers to ace their programming interviews

By: Anghel Leonard

Explore a wide variety of popular interview questions and learn various techniques for breaking down tricky bits of code and algorithms into manageable chunks Key FeaturesDiscover over 200 coding interview problems and their solutions to help you secure a job as a Java developerWork on overcoming coding challenges faced in a wide array of topics such as time complexity, OOP, and recursionGet to grips with the nuances of writing good code with the help of step-by-step coding solutionsBook Description Java is one of the most sought-after programming languages in the job market, but cracking the coding interview in this challenging economy might not be easy. This comprehensive guide will help you to tackle various challenges faced in a coding job interview and avoid common interview mistakes, and will ultimately guide you toward landing your job as a Java developer. This book contains two crucial elements of coding interviews - a brief section that will take you through non-technical interview questions, while the more comprehensive part covers over 200 coding interview problems along with their hands-on solutions. This book will help you to develop skills in data structures and algorithms, which technical interviewers look for in a candidate, by solving various problems based on these topics covering a wide range of concepts such as arrays, strings, maps, linked lists, sorting, and searching. You'll find out how to approach a coding interview problem in a structured way that produces faster results. Toward the final chapters, you'll learn to solve tricky questions about concurrency, functional programming, and system scalability. By the end of this book, you'll have learned how to solve Java coding problems commonly used in interviews, and will have developed the confidence to secure your Java-centric dream job. What you will learnSolve the most popular Java coding problems efficientlyTackle challenging algorithms that will help you develop robust and fast logicPractice answering commonly asked non-technical interview questions that can make the difference between a pass and a failGet an overall picture of prospective employers' expectations from a Java developerSolve various concurrent programming, functional programming, and unit testing problemsWho this book is for This book is for students, programmers, and employees who want to be invited to and pass interviews given by top companies. The book assumes high school mathematics and basic programming knowledge.

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788

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1839219173

ISBN 13

9781839219177

The The Complete Coding Interview Guide in Java

An effective guide for aspiring Java developers to ace their programming interviews

By: Anghel Leonard

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The The Complete Coding Interview Guide in Java

An effective guide for aspiring Java developers to ace their programming interviews

By: Anghel Leonard

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Solve jigsaw puzzle

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788

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1839219173

ISBN 13

9781839219177

Mastering JavaServer Faces 2.2

By: Anghel Leonard

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Mastering JavaServer Faces 2.2

By: Anghel Leonard

A homogenous guide integrating the features of JSF 2.x (2.0, 2.1 and 2.2), following a 'learning through examples' paradigm with its main focus on the advanced concepts of JSF. If you are a web developer who uses JSF, this is the book for you. Catering to an intermediate-advanced audience, the book assumes you have fundamental knowledge of JSF. It is intended for the developer who wants to improve their skills with the combined power of JSF 2.0, 2.1, and 2.2.

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Page Count

909

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1782176470

ISBN 13

9781782176473

jOOQ Masterclass

A practical guide for Java developers to write SQL queries for complex database interactions

By: Anghel Leonard,Lukas Eder

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jOOQ Masterclass

A practical guide for Java developers to write SQL queries for complex database interactions

By: Anghel Leonard,Lukas Eder

Learn the best way to write SQL in Java by taking control of SQL in your app via a type-safe, dynamic and versatile API that supports almost any type or feature compatible with a database and emphasizes SQL syntax correctness Key Features • Write complex, type-safe, and dynamic SQL using the powerful jOOQ API • Tackle complex persistence tasks, such as lazy fetching, R2DBC, transactions, and batching while sustaining high traffic in your modern Java applications • Use a comprehensive SPI to shape and extend jOOQ according to your needs Book Description jOOQ is an excellent query builder framework that allows you to emulate database-specific SQL statements using a fluent, intuitive, and flexible DSL API. jOOQ is fully capable of handling the most complex SQL in more than 30 different database dialects. jOOQ Masterclass covers jOOQ from beginner to expert level using examples (for MySQL, PostgreSQL, SQL Server, and Oracle) that show you how jOOQ is a mature and complete solution for implementing the persistence layer. You'll learn how to use jOOQ in Spring Boot apps as a replacement for SpringTemplate and Spring Data JPA. Next, you'll unleash jOOQ type-safe queries and CRUD operations via jOOQ's records, converters, bindings, types, mappers, multi-tenancy, logging, and testing. Later, the book shows you how to use jOOQ to exploit powerful SQL features such as UDTs, embeddable types, embedded keys, and more. As you progress, you'll cover trending topics such as identifiers, batching, lazy loading, pagination, and HTTP long conversations. For implementation purposes, the jOOQ examples explained in this book are written in the Spring Boot context for Maven/Gradle against MySQL, Postgres, SQL Server, and Oracle. By the end of this book, you'll be a jOOQ power user capable of integrating jOOQ in the most modern and sophisticated apps including enterprise apps, microservices, and so on. What you will learn • Enable the jOOQ Code Generator in any combination of Java and Kotlin, Maven and Gradle • Generate jOOQ artifacts directly from database schema, or without touching the real database • Use jOOQ DSL to write and execute a wide range of queries for different databases • Understand jOOQ type-safe queries, CRUD operations, converters, bindings, and mappers • Implement advanced SQL concepts such as stored procedures, derived tables, CTEs, window functions, and database views • Implement jOOQ multi-tenancy, tuning, jOOQ SPI, logging, and testing Who this book is for This book is for Java developers who write applications that interact with databases via SQL. No prior experience with jOOQ is assumed.

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764

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1800564864

ISBN 13

9781800564862

Java Coding Problems

Improve Your Java Programming Skills by Solving Real-World Coding Challenges

By: Anghel Leonard

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Java Coding Problems

Improve Your Java Programming Skills by Solving Real-World Coding Challenges

By: Anghel Leonard

Develop your coding skills by exploring Java concepts and techniques such as Strings, Objects and Types, Data Structures and Algorithms, Concurrency, and Functional programming Key Features Solve Java programming challenges and get interview-ready by using the power of modern Java 11 Test your Java skills using language features, algorithms, data structures, and design patterns Explore areas such as web development, mobile development, and GUI programming Book Description The super-fast evolution of the JDK between versions 8 and 12 has increased the learning curve of modern Java, therefore has increased the time needed for placing developers in the Plateau of Productivity. Its new features and concepts can be adopted to solve a variety of modern-day problems. This book enables you to adopt an objective approach to common problems by explaining the correct practices and decisions with respect to complexity, performance, readability, and more. Java Coding Problems will help you complete your daily tasks and meet deadlines. You can count on the 300+ applications containing 1,000+ examples in this book to cover the common and fundamental areas of interest: strings, numbers, arrays, collections, data structures, date and time, immutability, type inference, Optional, Java I/O, Java Reflection, functional programming, concurrency and the HTTP Client API. Put your skills on steroids with problems that have been carefully crafted to highlight and cover the core knowledge that is accessed in daily work. In other words (no matter if your task is easy, medium or complex) having this knowledge under your tool belt is a must, not an option. By the end of this book, you will have gained a strong understanding of Java concepts and have the confidence to develop and choose the right solutions to your problems. What you will learn Adopt the latest JDK 11 and JDK 12 features in your applications Solve cutting-edge problems relating to collections and data structures Get to grips with functional-style programming using lambdas Perform asynchronous communication and parallel data processing Solve strings and number problems using the latest Java APIs Become familiar with different aspects of object immutability in Java Implement the correct practices and clean code techniques Who this book is for If you are a Java developer who wants to level-up by solving real-world problems, then this book is for you. Working knowledge of Java is required to get the most out of this book.

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Page Count

816

Published Date

ISBN 10

1789801419

ISBN 13

9781789801415

Mastering JavaServer Faces 2.2

By: Anghel Leonard

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Mastering JavaServer Faces 2.2

By: Anghel Leonard

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Page Count

909

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1782176470

ISBN 13

9781782176473

Spring Boot Persistence Best Practices

Optimize Java Persistence Performance in Spring Boot Applications

By: Anghel Leonard

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Spring Boot Persistence Best Practices

Optimize Java Persistence Performance in Spring Boot Applications

By: Anghel Leonard

This book is a collection of developer code recipes and best practices for persisting data using Spring, particularly Spring Boot. The book is structured around practical recipes, where each recipe discusses a performance case or performance-related case, and almost every recipe has one or more applications. Mainly, when we try to accomplish something (e.g., read some data from the database), there are several approaches to do it, and, in order to choose the best way, you have to know the implied trades-off from a performance perspective. You’ll see that in the end, all these penalties slow down the application. Besides presenting the arguments that favor a certain choice, the application is written in Spring Boot style which is quite different than plain Hibernate. Persistence is an important set of techniques and technologies for accessing and using data, and this book demonstrates that data is mobile regardless of specific applications and contexts. In Java development, persistence is a key factor in enterprise, ecommerce, cloud and other transaction-oriented applications. After reading and using this book, you'll have the fundamentals to apply these persistence solutions into your own mission-critical enterprise Java applications that you build using Spring. What You Will Learn Shape *-to-many associations for best performancesEffectively exploit Spring Projections (DTO) Learn best practices for batching inserts, updates and deletes Effectively fetch parent and association in a single SELECTLearn how to inspect Persistent Context contentDissect pagination techniques (offset and keyset)Handle queries, locking, schemas, Hibernate types, and more Who This Book Is For Any Spring and Spring Boot developer that wants to squeeze the persistence layer performances.

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Page Count

1043

Publisher

Apress

Published Date

ISBN 10

1484256263

ISBN 13

9781484256268

jOOQ Masterclass

A practical guide for Java developers to write SQL queries for complex database interactions

By: Anghel Leonard,Lukas Eder

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jOOQ Masterclass

A practical guide for Java developers to write SQL queries for complex database interactions

By: Anghel Leonard,Lukas Eder

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Page Count

764

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1800564864

ISBN 13

9781800564862

Pro Java 7 NIO.2

By: Anghel Leonard

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Pro Java 7 NIO.2

By: Anghel Leonard

Pro Java 7 NIO.2 addresses the three primary elements that offer new input/output (I/O) APIs in Java 7, giving you the skills to write robust, scalable Java applications: An extensive file I/O API system addresses feature requests that developers have sought since the inception of the JDK A socket channel API addresses multicasting, socket binding associated with channels, and related issues An asynchronous I/O API enables mapping to I/O facilities, completion ports, and various I/O event port mechanisms to enhance scalability NIO.2 for the Java platform, known as JSR 203, is a major feature of the new Java JDK 7 under the leadership of Alan Bateman as an OpenJDK project. Take advantage of these exciting new developments with Pro Java 7 NIO.2.

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Page Count

295

Publisher

Apress

Published Date

ISBN 10

1430240121

ISBN 13

9781430240129

Pro Hibernate and MongoDB

By: Anghel Leonard

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Pro Hibernate and MongoDB

By: Anghel Leonard

Hibernate and MongoDB are a powerful combination of open source persistence and NoSQL technologies for today's Java-based enterprise and cloud application developers. Hibernate is the leading open source Java-based persistence, object relational management engine, recently repositioned as an object grid management engine. MongoDB is a growing, popular open source NoSQL framework, especially popular among cloud application and big data developers. With these two, enterprise and cloud developers have a "complete out of the box" solution. Pro Hibernate and MongoDB shows you how to use and integrate Hibernate and MongoDB. More specifically, this book guides you through the bootstrap; building transactions; handling queries and query entities; and mappings. Then, this book explores the principles and techniques for taking these application principles to the cloud, using the OpenShift Platform as a Service (PaaS) and more. In this book, you get two case studies: An enterprise application using Hibernate and MongoDB. then, A cloud application (OpenShip) migrated from the enterprise application case study After reading or using this book, you come away with the experience from two case studies that give you possible frameworks or templates that you can apply to your own specific application or cloud application building context.

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Page Count

377

Publisher

Apress

Published Date

ISBN 10

1430257954

ISBN 13

9781430257950

Jsf 2.0 Cookbook

Lite

By: Anghel Leonard

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Jsf 2.0 Cookbook

Lite

By: Anghel Leonard

Practical, hands-on "Cookbook" approach. Full of clear, step-by-step instructions that you can apply straight away. Written for people who want to get maximum results without lots of background and theory reading. JSF developers who want to work with validators, converters and security features of JSF. You don't need any prior knowledge of JSF to use these recipes.

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Page Count

142

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1849691630

ISBN 13

9781849691635

JBoss Tools 3 Developers Guide

By: Anghel Leonard

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JBoss Tools 3 Developers Guide

By: Anghel Leonard

Develop JSF, Struts, Seam, Hibernate, jBPM, ESB, web services, and portal applications faster than ever using JBoss Tools for Eclipse and the JBoss Application Server.

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Page Count

566

Publisher

Packt Publishing Ltd

Published Date

ISBN 10

1847196152

ISBN 13

9781847196156

Jboss Tools 3 Developer'S Guide

By: Anghel Leonard

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Jboss Tools 3 Developer'S Guide

By: Anghel Leonard

This book will show you how to develop a set of Java projects using a variety of technologies and scenarios. Everything is described through JBoss Tools eyes . After we settle the project (or scenario) that will be developed, we configure the proper environment for the current tool (the selected projects cover the main components of a web application, with regard to the backstage technology). We continue by exploring the tool to accomplish our tasks and develop the project's components. A cocktail of images, theoretical aspects, source code, and step-by-step examples will offer you a complete insight into every tool.

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Page Count

408

Published Date

ISBN 10

8184047797

ISBN 13

9788184047790

Mastering JavaServer Faces 2.2

By: Anghel Leonard

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Mastering JavaServer Faces 2.2

By: Anghel Leonard

A homogenous guide integrating the features of JSF 2.x (2.0, 2.1 and 2.2), following a learning through examples paradigm with its main focus on the advanced concepts of JSF. If you are a web developer who uses JSF, this is the book for you. Catering to an intermediate-advanced audience, the book assumes you have fundamental knowledge of JSF. It is intended for the developer who wants to improve their skills with the combined power of JSF 2.0, 2.1, and 2.2.

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Solve jigsaw puzzle

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Page Count

578

Published Date

ISBN 10

130690272X

ISBN 13

9781306902724

Book's by Anghel Leonard

The The Complete Coding Interview Guide in Java

The The Complete Coding Interview Guide in Java

The The Complete Coding Interview Guide in Java

The The Complete Coding Interview Guide in Java

Mastering JavaServer Faces 2.2

Mastering JavaServer Faces 2.2

jOOQ Masterclass

jOOQ Masterclass

Java Coding Problems

Java Coding Problems

Mastering JavaServer Faces 2.2

Mastering JavaServer Faces 2.2

Spring Boot Persistence Best Practices

Spring Boot Persistence Best Practices

jOOQ Masterclass

jOOQ Masterclass

Pro Java 7 NIO.2

Pro Java 7 NIO.2

Pro Hibernate and MongoDB

Pro Hibernate and MongoDB

Jsf 2.0 Cookbook

Jsf 2.0 Cookbook

JBoss Tools 3 Developers Guide

JBoss Tools 3 Developers Guide

Jboss Tools 3 Developer'S Guide

Jboss Tools 3 Developer'S Guide

Mastering JavaServer Faces 2.2

Mastering JavaServer Faces 2.2

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