Book Image

Java Coding Problems

By : Anghel Leonard
Book Image

Java Coding Problems

By: Anghel Leonard

Overview of this book

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.
Table of Contents (15 chapters)
Free Chapter
1
Strings, Numbers, and Math
2
Objects, Immutability, and Switch Expressions
3
Working with Date and Time
5
Arrays, Collections, and Data Structures
6
Java I/O Paths, Files, Buffers, Scanning, and Formatting
7
Java Reflection Classes, Interfaces, Constructors, Methods, and Fields
8
Functional Style Programming - Fundamentals and Design Patterns
9
Functional Style Programming - a Deep Dive
10
Concurrency - Thread Pools, Callables, and Synchronizers
11
Concurrency - Deep Dive
13
The HTTP Client and WebSocket APIs

Summary

Our job's done! This chapter covered infinite streams, null-safe streams, and default methods. A comprehensive list of problems covered grouping, partitioning, and collectors, including the JDK 12 teeing() collector and writing a custom collector. In addition, takeWhile(), dropWhile(), composing functions, predicates and comparators, testing and debugging lambdas, and other cool topics were covered as well.

Download the applications from this chapter to view the results and additional details.