What does a Java array look like in memory?
n Java, an array stores either primitive values (int, char, ...) or references (a.k.a pointers) to objects. When an object is created by using "new", memory space is allocated in…
Spring MVC and the @ModelAttribute Annotation
1. Overview One of the most important Spring-MVC annotations is the @ModelAttribute annotation. The @ModelAttribute is an annotation that binds a method parameter or method return value to a named model attribute and then exposes it…
Spring @RequestParam Annotation
Overview In this quick tutorial, we’ll explore Spring's @RequestParam annotation. Simply put, we can use @RequestParam to extract query parameters, form parameters and even files from the request. We’ll discuss how to use @RequestParam and its…
Spring RequestMapping
Overview @RequestMapping is one of the most common annotation used in Spring Web applications. This annotation maps HTTP requests to handler methods of MVC and REST controllers. In this post,…
JDK 13: The new features coming to Java 13
Official development targets for Java 13 include improvements to garbage collection, application class-data sharing, and text blocks Java Development Kit (JDK) 13, the next version of standard Java, is now…
Spring Bean Annotations
Overview In this article, we’ll discuss the most common Spring bean annotations used to define different types of beans. There’re several ways to configure beans in a Spring container. We can declare…
Bubble Sort
Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in the wrong order. Example:First Pass:( 5 1 4 2 8 ) –> ( 1 5 4 2…
Vector vs ArrayList in Java
ArrayList and Vectors both implement the List interface and both use (dynamically resizable) arrays for its internal data structure, much like using an ordinary array.Syntax: ArrayList<T> al = new ArrayList<T>(); Vector<T> v…
ArrayList in Java
ArrayList is a part of collection framework and is present in java.util package. It provides us dynamic arrays in Java. Though, it may be slower than standard arrays but can be helpful…
Java 101: Interfaces in Java
Java interfaces are different from classes, and it's important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and interfaces,…