• Java
    • JAXB Tutorial
      • What is JAXB
      • JAXB Marshalling Example
      • JAXB UnMarshalling Example
  • Spring Tutorial
    • Spring Core Tutorial
    • Spring MVC Tutorial
      • Quick Start
        • Flow Diagram
        • Hello World Example
        • Form Handling Example
      • Handler Mapping
        • BeanNameUrlHandlerMapping
        • ControllerClassNameHandlerMapping
        • SimpleUrlHandlerMapping
      • Validation & Exception Handling
        • Validation+Annotations
        • Validation+ResourceBundle
        • @ExceptionHandler
        • @ControllerAdvice
        • Custom Exception Handling
      • Form Tag Library
        • Textbox Example
        • TextArea Example
        • Password Example
        • Dropdown Box Example
        • Checkboxes Example
        • Radiobuttons Example
        • HiddenValue Example
      • Misc
        • Change Config file name
    • Spring Boot Tutorial
  • Hibernate Tutorial
  • REST Tutorial
    • JAX-RS REST @PathParam Example
    • JAX-RS REST @QueryParam Example
    • JAX-RS REST @DefaultValue Example
    • JAX-RS REST @Context Example
    • JAX-RS REST @MatrixParam Example
    • JAX-RS REST @FormParam Example
    • JAX-RS REST @Produces Example
    • JAX-RS REST @Consumes Example
    • JAX-RS REST @Produces both XML and JSON Example
    • JAX-RS REST @Consumes both XML and JSON Example
  • Miscellaneous
    • JSON Parser
      • Read a JSON file
      • Write JSON object to File
      • Read / Write JSON using GSON
      • Java Object to JSON using JAXB
    • CSV Parser
      • Read / Write CSV file
      • Read/Parse/Write CSV File – OpenCSV
      • Export data into a CSV File
      • CsvToBean and BeanToCsv – OpenCSV

JavaInterviewPoint

Java Development Tutorials

Get Query String from Servlet Request

June 30, 2015 by javainterviewpoint Leave a Comment

Form

The getQueryString() method is defined in the HttpServletRequest interface, which is used to retrieve the query string of the HTTP request. A query string is the string on the URL to the right of the path to the servlet. Using this a programmer can know the data which is sent from the client(when a form is submitted)  … [Read more...]

ServletRequest Interface – Servlets

June 17, 2015 by javainterviewpoint Leave a Comment

ServletInterfaceExample

The ServletRequest Interface defines an object which is used to encapsulate information about the user's request, including parameter name/value pairs, attributes, and an input stream. … [Read more...]

HttpServlet class

May 25, 2015 by javainterviewpoint Leave a Comment

The HttpServlet class extends the GenericServlet class and implements Serializable interface. It provides all the Http protocol supported methods such as  doGet(), doPost(), doHead(), doPut(), doDelete(), doOptions(), doTrace(). … [Read more...]

GenericServlet class

May 22, 2015 by javainterviewpoint Leave a Comment

GenericServlet is a abstract class which is defined in the Servlet API. GenericServlet class implements Servlet, ServletConfig and Serializable interfaces, it provides implementation for all the methods of the Servlet Interface except the service() method. … [Read more...]

Servlet Interface

May 20, 2015 by javainterviewpoint Leave a Comment

Servlet Interface provides the common methods which needs to be implemented by all the servlets. All the servlets must implement this interface directly or indirectly. To have the implementation of the Servlet Interface you can extend GenericServlet Class(javax.servlet.GenericServlet) or HttpServlet Class (javax.servlet.http.HttpServlet).  Read through Running Your First … [Read more...]

Running Your First Servlet Application

May 18, 2015 by javainterviewpoint Leave a Comment

Installation_Directory

Once we have installed and configured Tomcat, we need to follow the below five steps to run our First Hello World Application. Create a directory under Tomcat for our application. Coding our servlet. We will be using javax.servlet package and the javax.servlet.http package in our source code. Create a deployment descriptor. Compile our source code. Run Tomcat … [Read more...]

Life Cycle of a Servlet

April 11, 2015 by javainterviewpoint Leave a Comment

The Servlet Container is responsible for maintaining the life cycle of a Servlet. The life cycle has the below following phases. Load Servlet Class Servlet instance is created init() method is invoked service() method is invoked destroy() method is invoked … [Read more...]

Difference between ServletConfig and ServletContext

November 20, 2014 by javainterviewpoint Leave a Comment

ServletConfig and ServletContext are the two import interfaces in ServletAPI, Lets see whats the difference between them and how to use. ServletConfig ServletConfig is available in the javax.servlet.* package. ServletConfig object will be created during the initialization(init()) of the servlet. … [Read more...]

Java Basics

  • JVM Architecture
  • Object in Java
  • Class in Java
  • How to Set Classpath for Java in Windows
  • Components of JDK
  • Decompiling a class file
  • Use of Class.forName in java
  • Use Class.forName in SQL JDBC

Oops Concepts

  • Inheritance in Java
  • Types of Inheritance in Java
  • Single Inheritance in Java
  • Multiple Inheritance in Java
  • Multilevel Inheritance in Java
  • Hierarchical Inheritance in Java
  • Hybrid Inheritance in Java
  • Polymorphism in Java – Method Overloading and Overriding
  • Types of Polymorphism in java
  • Method Overriding in Java
  • Can we Overload static methods in Java
  • Can we Override static methods in Java
  • Java Constructor Overloading
  • Java Method Overloading Example
  • Encapsulation in Java with Example
  • Constructor in Java
  • Constructor in an Interface?
  • Parameterized Constructor in Java
  • Constructor Chaining with example
  • What is the use of a Private Constructors in Java
  • Interface in Java
  • What is Marker Interface
  • Abstract Class in Java

Java Keywords

  • Java this keyword
  • Java super keyword
  • Final Keyword in Java
  • static Keyword in Java
  • Static Import
  • Transient Keyword

Miscellaneous

  • newInstance() method
  • How does Hashmap works internally in Java
  • Java Ternary operator
  • How System.out.println() really work?
  • Autoboxing and Unboxing Examples
  • Serialization and Deserialization in Java with Example
  • Generate SerialVersionUID in Java
  • How to make a class Immutable in Java
  • Differences betwen HashMap and Hashtable
  • Difference between Enumeration and Iterator ?
  • Difference between fail-fast and fail-safe Iterator
  • Difference Between Interface and Abstract Class in Java
  • Difference between equals() and ==
  • Sort Objects in a ArrayList using Java Comparable Interface
  • Sort Objects in a ArrayList using Java Comparator

Follow

  • Coding Utils

Useful Links

  • Spring 4.1.x Documentation
  • Spring 3.2.x Documentation
  • Spring 2.5.x Documentation
  • Java 6 API
  • Java 7 API
  • Java 8 API
  • Java EE 5 Tutorial
  • Java EE 6 Tutorial
  • Java EE 7 Tutorial
  • Maven Repository
  • Hibernate ORM

About JavaInterviewPoint

javainterviewpoint.com is a tech blog dedicated to all Java/J2EE developers and Web Developers. We publish useful tutorials on Java, J2EE and all latest frameworks.

All examples and tutorials posted here are very well tested in our development environment.

Connect with us on Facebook | Privacy Policy | Sitemap

Copyright ©2022 · Java Interview Point - All Rights Are Reserved ·