Java, a popular programming language, offers a rich set of data structures through its Collection Framework. Among these, ArrayList and HashMap are fundamental classes that serve distinct purposes and possess unique functionalities. Let’s explore these two classes, highlighting their similarities, differences, and use cases.
ArrayList: Dynamic Arrays in Java
ArrayList, residing in the java.util package provides dynamic arrays in Java programming. Despite being potentially slower than standard arrays, it proves invaluable in scenarios demanding frequent array manipulations. It implements the List interface, enabling operations such as addition, retrieval, and removal of elements.
Java, an ever-reliable programming language, continues to be a cornerstone in business and technology. Its versatility and robustness make it an indispensable choice for diverse applications, ranging from enterprise systems to web and mobile applications.
Java’s evolution in the cloud-native space and its adaptation to modern paradigms are pivotal in shaping software development practices.
The State of Java Development Today
Java, having evolved since its inception in 1995, has witnessed a surge in popularity, especially in cloud computing. Its platform independence and ease of migration across various platforms make it a favoured choice. The Java ecosystem, replete with different tools and frameworks, facilitates seamless application development and deployment.
Singletons are useful to provide a unique source of data or functionality to other Java Objects. Design pattern singleton is used to control the heap overflow. It limits the user to create one object for a particular class. If we need to add more functionalities then we can create more objects.
