Day by Day, technology is changing and grooming the world with its exploring advancements in the world. Thus enhancement in technology demands an evolution in the programming language also. One such programming language is Java programming language that is always in demand and a popular programming language. Java has n number of applications or so-called Java apps.
In this section, we will discuss several Java apps and briefly introduce each of them. In Java, we have several applications, but here we will discuss some of the top Java applications. But before discussing, let's know what Java application is and why Java applications are famous.
What is Java Application
A Java application is a program written in Java that is executed stand-alone either in a client or a server. The JVM interprets the instructions and executes the program in the JRE, where the Java programs gain complete access to every computer resource available in the computer system.
Why Java Applications so Famous
Due to the following characteristics of Java, the applications of Java are widely popular:
Let's discuss some of the popular Java applications:
1) Mobile Applications
The most popular Java application is a mobile application that is developed via the Android operating system. Almost everyone uses mobile phones and uses several applications which are developed in the Java programming language. For the development of mobile applications, Java is the official or base programming language. It is compatible with mobile apps development software such as Android Studio and Kotlin. As Java executes on JVM similarly, Android uses Dalvik Virtual Machine (DVK) to execute class files, and then these Android files are bundled as Android Application Package (APK). Because of Java and its OOPs concepts, it enables better security and simplicity with Android.
Desktop GUI Applications
It is quite easy to develop desktop applications in the Java programming language. Java enables GUI development capability through AWT, Java Swings, Java FX, and Java Hibernate. AWT or Abstract Windowing Toolkit contains a number of pre-assembled components like menu, list, and buttons. Java Swing is a GUI widget toolkit that provides certain advanced elements like trees, tables, lists, scroll panes, and lists. Thus using such Java toolkits, it is quite easy to develop desktop applications using Java.
Till now, Java is considered to be the first choice of software developers in order to develop enterprise-based software. Generally, Java developers make use of the Java programming language in order to write applications in Java. To do so, they prefer Java Enterprise Edition, i.e., Java EE which is a very popular platform as it provides API (Application Programming Interface) and runtime environment for scripting the code. The Enterprise Edition includes both network applications as well as web services. With this, the Enterprise Edition is also considered as the backbone for several banking applications, with Java running on the UI to the back server end.
Java web-based Applications
The Java programming language enables high security as well as simple and easy coding. These two elements of Java attract web application developers to use Java. Java models such as Struts, Servlets and JSPs provide powerful and effective support to web applications. It also offers the potential to develop whatever kind of programs is required. With this, open-source e-commerce platforms like Broadleaf make a simple task to design the e-commerce apps.
Java Scientific Applications
The mathematical operations related to the science operations and calculations are used mainly for developing apps that are extremely fast, easy to maintain, highly secure, and highly portable. Thus using, Java fulfills all such needs very well. As there are several powerful scientific applications and one such application is MATLAB which is also dependent on Java language as part of the core system and in order to interact with user interfaces.
Java Web Servers and Application Servers
It is well known that Java is a robust programming language. The robustness feature of the Java ecosystem risen to several Java web and Java application servers. In it, the Web server space is home to servlets like Project Jigsaw, Apache Tomcat, and Rimfaxe Web Server (RWS). With it, servlets such as WebLogic, JBoss EAP, and WebSphere carries a firm foothold in the commercial application server space.
An embedded system, or we can say an integrated system, which is a combination of many small computing units. These units assemble together to perform dedicated functions for the larger systems. It is common to known that such Embedded systems are present everywhere around the globe and the irony is that we use them without knowing. We make use of embedded systems like a motor system, E-commerce, mobile computing, entertainment and multimedia in a car, wireless communication, and networking. These embedded systems use Java programming language to develop and build embedded system applications. As Java is an efficient platform as it requires just 130 KBs to use it on smart cards or sensors. The fast feature of Java becomes effective when using low-power/low-speed processors, and the Java robustness feature handles exceptions safely.
Cloud Computing has become so famous and has reduced the worries to carry documents everywhere as it enables on-demand delivery of the IT resources that can be taken via internet and include storage, databases and software. Just, one needs to pay a small amount which is known as pay-as-you-go pricing model. Cloud Computing also provides IT infrastructure at a low cost, as we can save files on remote databases and retrieve them on demand.
Big Data Technologies
Due to such everlasting languages like Java and Scala, Big Data has gained great popularity. When the Big Data application is developed using Java, Java becomes the backbone of it. And one might be aware of the term Big Data that defines extremely big and complex datasets that may be analyzed for extracting trends, patterns, and other useful information. Hadoop, an open-source framework, is associated with Big Data and is written in Java programming language. Not only Hadoop, but other Apache technologies like Apache Spark, etc., are the sub-projects of Java. Also, Scala (a powerful programming language) is also based on Java programming language. The Scala codes are easily convertible into bytecode and can be executed on the Java Virtual Machine. Hadoop and other Apache frameworks use Java for executing some of its tasks.
Thus one such contribution for Big Data goes to Java.
The distributed applications are those applications that are executed on multiple computers within a network and thus need several common requirements as the platforms are dynamic and distributed. For this, there exists several APIs for developing the distributed applications like Remote Procedure Invocation (RPI) and CORBA (Common Object Request Broker Architecture). The Java Intelligent Networking Infrastructure known as (JINI) provides an infrastructure to provide, register, and find distributed services based on specifications. In JINI, one of its important parts is JavaSpaces that supports distribution, persistence, and object migration in distributed environments. Thus, in this way, Java supports Distributed Applications.
Java is known as one of the best programming languages for building and developing games. A best platforms for developing 2Dimensional games is Java. Today most of the population use Androids, but before Android, on keypad phones as well Java 2-D games were available that were also closely liked by the crowd, and at present, in Android phones, new and advanced Java games are available. The games we play on Android mobiles can be built in Java only. It also supports JMonkey Engine, a most powerful open-source 3D engine, and holds to design 3D games capacity. One should also know the reason for Android choosing Java as a primary language because Java language supports the Dalvik Virtual Machine (DVM), which, like JVM, is used for executing Android programs.
By using the Java Enterprise Edition platform, developers are capable of creating large-scale, scalable, secure as well as reliable network applications. Such large-scale applications are mainly developed for solving significant enterprise problems. Java EE is the best-chosen platform by developers because the enterprise edition helps the developers make powerful applications for the enterprise with great security and reliability by providing a development model, API, and a runtime environment that makes developers focus on the functionality entirely.
Thus all these discussed are some of the most popular and widely used Java applications. Apart from these, several other applications are Java-based and are being in development. Therefore, Java is an ocean with no limit and a base for the new emerging and upcoming technologies.