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                     Write a Pattern in Java                                           *                                    *                 *                             *                                 *                                    *                 *                                              *   class StarPattern{ Public Static void main(String[] args ) { int n=5; int sp=n/2; int st=1; for(int i=1;i<=n;i++); // difine how many lines. { for(int j=1;j<=sp;j++) { System.out.print("  "); } for(int j=1;j<=st;j++) { if(j=1 || j==st) { System.out.print("*"); }else{ System.out.print("  "); } } if(i<n/2) { sp--; st=st+2; }else{ sp++; st=st-2; } System.out.println(); } } }       

 What is Java?  It is an object-oriented language similar to C++, but with advanced and simplified features. Java is free to access and can run on all platforms. Java is a write-once, run-anywhere programming language developed by Sun Microsystems. It is similar to C and C++ but a lot easier. You can combine Java with a lot of technologies like Spring, node js, Android, Hadoop, J2EE, etc… to build robust, scalable, portable, and distributed full-fledged applications. Java also promotes continuous integration and testing using tools like Selenium. Java was originally developed by James Gosling with his colleagues at Sun Microsystems during the early 1990s. Initially, it was called a project ‘Oak’ which had implementation similar to C and C++. The name Java has later selected after enough brainstorming and is based on the name of an espresso bean. Java 1.0, the first version was released in 1995 with the tagline ‘write once, run anywhere. Later, Sun Microsystems was acquired by O

  Top Java frameworks used Java Frameworks are the bodies of pre-written code through which you are allowed to add your own code. But there are a lot of frameworks out there that have various applications. So, in this article, I’ll discuss the top 10  Java  frameworks you should master. Let’s look at the topics to be covered in this article: What are Java frameworks? Top Java frameworks used Spring Hibernate Struts Google web toolkit [GWT] JavaServer Faces [JSF] Grails Vaadin Blade Dropwizard Play

  Google web toolkit [GWT] Google Web Toolkit (GWT) is a completely free, open-source framework that helps the developers to write client-side Java code and establish it as JavaScript. A lot of Google products are written using GWT such as AdSense, Google Wallet, and Blogger. Using GWT, developers can easily code complex browser applications rapidly. It also allows you to develop and debug Ajax applications in Java. The awesome thing about GWT is that you can write complex browser-based applications without being an expert in front-end technologies like JavaScript optimization or responsive design. Uses: Developer-friendly Use of Google APIs Helps in creating and maintaining complex JavaScript front-end applications Advantages It supports reusability for common web development tasks Google APIs can be used in GWT applications Offers internationalization, cross-browser portability, UI abstraction, bookmarking, and history management

Play Framework in Java This is a reactive web and mobile framework for highly scalable Java applications. Play makes it possible to develop lightweight and web-friendly Java and Scala applications for desktop and mobile interfaces. It is often compared with powerful frameworks of other languages, like Ruby on Rails for Ruby, or Django for Python. Play is a unique Java framework as it doesn’t rely on the Java EE standards. Instead, it intends to remove all the inconveniences of traditional Java web development like slow development cycles, a lot of configuration, and many more. Built upon  Akka  Toolkit, the Play framework truncates the creation of concurrent and distributed applications on the Java Virtual Machine.    Uses: Web applications that demand content creation Builds Java and Scala applications Advantages Offers features like hot code reloading, convention over configuration, and error messages in the browser It supports non-blocking I/O which is crucial for high-performance a

     Dropwizard Framework Dropwizard is a high-performance Java framework for the rapid development of RESTful web services. It is especially suitable for creating Java microservices. The Dropwizard framework pulls together various well-established Java libraries in order to provide a fast and distraction-free development platform. Dropwizard is a separate ecosystem that contains all the dependencies bundled into a single package. Uses : Operations-friendly Java framework Helps in creating Java microservices Advantages You can easily perform rapid prototyping It develops high-performance RESTful web services Also supports many open source and independent libraries Quick Project Bootstrap Increase in productivity 

  Blade Framework This is a simple and lightweight and high-performance Java framework used for providing a full-stack web framework. The blade is a lightweight MVC Framework that provides a restful routing interface, making the web API cleaner and much easier to understand and also helps in synchronizing data with the website. The blade is based on Java 8, and the webserver and template engine is built into the framework, too. It has a minimal impression which means the source code is less than 500kb in total.  Uses: Helps you to be self-contained, productive, elegant, intuitive, and super fast Used to create a small MVC application Advantages Blade supports plug-in extensions and web jar resources Support for configuring multiple files It also possesses CSRF (Cross-Site Request Forgery) and XSS (Cross-site scripting) defense support Dropwizard Dropwizard is a high-performance Java framework for the rapid development of RESTful web services. It is especially