URL: https://www.progressiverobot.com/java-enum/ Enum was introduced in Java 1.5 as a new type whose fields consists of a fixed set of constants. For example, we can create directions as Java Enum with fixed fields as EAST, WEST, NORTH, and SOUTH. Java Enum !java enum, enums in java In this tutorial, we will learn know how to […]
URL: https://www.progressiverobot.com/java-inner-class/ Java inner class is defined inside the body of another class. Java inner class can be declared private, public, protected, or with default access whereas an outer class can have only public or default access. Java Nested classes are divided into two types. ### static nested class If the nested class is static, […]
URL: https://www.progressiverobot.com/java-open-file/ Sometimes we have to open a file in java program. java.awt.Desktop can be used to open a file in java. Desktop implementation is platform dependent, so first, we should check if the operating system supports Desktop or not. This class looks for the associated application registered to the current platform to open a […]
URL: https://www.progressiverobot.com/java-sax-parser-example/ SAX Parser in java provides API to parse XML documents. SAX parser is different from [DOM parser](/community/tutorials/read-xml-file-java-dom-parser "How to read an XML File in Java (DOM Parser)") because it doesn't load complete XML into memory and read xml document sequentially. SAX Parser  javax.xml.parsers.SAXParser provides method […]
Learn how to use the Java substring method. Explore syntax, practical examples, and common errors to handle substrings effectively.
URL: https://www.progressiverobot.com/java-web-application-tutorial-for-beginners/ Java Web Application is used to create dynamic websites. Java provides support for web application through Servlets and JSPs. We can create a website with static HTML pages but when we want information to be dynamic, we need web application. Java Web Application The aim of this article is to provide basic details […]
URL: https://www.progressiverobot.com/jsp-example-tutorial-for-beginners/ Welcome to the JSP Example Tutorial for Beginners. In last few posts, a wrote a lot about Java Servlet and got very good response from our readers. So I have started another series on JSP tutorials and this is the first post of the series. JSP Example Tutorial ![jsp example, jsp tutorial, jsp […]
URL: https://www.progressiverobot.com/mediator-design-pattern-java/ Mediator design pattern is one of the behavioral design pattern, so it deals with the behaviors of objects. Mediator design pattern is used to provide a centralized communication medium between different objects in a system. Mediator Design Pattern  According to GoF, mediator pattern intent is: […]
Grasp the distinction between method overriding and overloading in Java. Learn when to use each approach to create a more robust and flexible object-oriented design.
URL: https://www.progressiverobot.com/servlet-interview-questions-and-answers/ Servlets is a very important topic of Java EE and all of the web applications frameworks such as Spring and Struts is built on top of it. This makes servlet interview questions a hot topic in interviews. Here I am providing a list of 50 servlet interview questions with answers to help you […]
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