In this example we will look briefly at the basics of Exception, in Java Programming Language. We will also see, how to create a custom Exception Class. 1. Basics of Exception As per oracle docs, An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program’s instructions. In laymen terms, when a condition occurs, in which the routine is not … Continue reading Java Custom Exception Example

In this JAX Magazine sneak preview, JAX London speaker Angelika Langer answers the most important question for anyone using Java streams: are they really faster? Java 8 came with a major addition to the JDK collection framework, namely the stream API. Similar to collections, streams represent sequences of elements. Collections support operations such as add(), remove(), and contains() that work on a single element. Streams, in contrast, have bulk … Continue reading Java performance tutorial – How fast are the Java 8 streams?

These are two examples on how to implement a Strategy pattern designusing Java 8 functional style together with Cyclops pattern matching and Hamcrest libraries. PrintDependingOnInput method is a strategy that will System.println some message based on the log passed. AddPrefix is another strategy that will add a prefix to a message based on the message content. package com.marco.patternmatching; import static org.hamcrest.Matchers.containsString; import static org.hamcrest.Matchers.not; import static org.hamcrest.Matchers.startsWith; import static org.hamcrest.core.AllOf.allOf; … Continue reading Strategy Pattern in Java 8