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Simple tutorials to learn java

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(via Spring MVC Controllers)

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This tutorial would be focusing on different ways of write to file using Java. Stream is a general mechanism of I/O in java. Stream provides sequential access of data. An input stream can be used by an application to read data. An output stream to write data. A file, network connection, arrays can act as …

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Java 8 map method Examples - Java Code Gists

In Java 8 streams map() method is one of the most important and the widely used methods of streams. In this tutorial, we would be looking at various ways we can use map method. These examples can help you understand the usage of Java 8 stream map() method. The javadocs describes the example:() method as: …

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(via Command Pattern with Java examples)

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The purpose of HashMap isn’t to keep entries in a sorted order, but Java provides you the option to sort HashMap on the basis of values or keys. To sort HashMap based on keys, all that is needed is creating a TreeMap by copying entries from the desired HashMap. One can implement SortedMap by TreeMap …

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(via What is Bridge Design Pattern?)

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(via What is Adapter Design Pattern?)

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(via What is Facade Design Pattern?)

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Java : The Complete Java Reference Level – Beginner to Advanced This book is called the Bible of Java programming and rightly so. Written by Herbert Schildt and released by Oracle Press, this book was first published way back in the 90s. This book is very comprehensive and covers just about anything that you want …

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(via What is Decorator Design Pattern?)

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(via Understanding the Creational Design Patterns)

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(via What is Prototype Design Pattern?)

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(via Abstract Factory Pattern in Java)

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Reactive programming is becoming ubiquitous when it comes to building any real-time system in recent times. Software designs are shifting from the conventional servers and containers to be event-driven, responsive, scalable and handle failures gracefully. The problem with the traditional approach of creating multithreaded, synchronized and shared applications was that the end products were tightly …

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(via Builder Pattern with Java examples)

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(via HashMap in Java)

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(via Variable Handle In Java 9)