Java Home page

Java Fundamentals

Array Programs in Java

Array specific programs in Java Read more>>

Core Java

Introduction to Java Technology, it is best place to start for a beginner. You can learn OOPs, threads, Collections, Garbage Collection etc., Read more>>

ClassLoader

An introduction to Java class loades, how to create custom class loader, how to reload class etc., Read more>>

Collection programs

Collection programs Read more>>

Date and time programs

Date and time programs Read more>>

Design Patterns

A software design pattern is a general reusable solution to a commonly occurring problem within a given context in software design. I documented mostly used design patterns here. Read more>>

Image related Programs

Image related programs in Java Read more>>

File programs in Java

File programs in Java Read more>>

Interview Questions

You can get some interesting interview questions on core java here. Read more>>

Keystore

Keystore is a file which acts as a storage to store the keys, certificates. Read more>>

Java8

Java8 come up with streams and some other enhancements like lambda expressions, Joda time API kind of time apis etc., Read more>>

Java9

Java9 comes with many intresting feartures like private methods in interfaces, JShell, Modularity etc., Read more>>

Java10

Java10 features are covered here. Read more>>

Java11

Java11 features are covered here. Read more>>

Java12

Java12 features are covered here. Read more>>

Java13

Java13 features are covered here. Read more>>

Java14

Java14 features are covered here. Read more>>

Java15

Java15 features are covered here. Read more>>

java.awt

java.awt programs Read more>>

java.beans

java.beans package programs Read more>>

Security

You will learn about java polcicy files (How to create, update and use policy files) and JAAS (JAAS stands for Java Authentication and Authorization Services, it is part of Java security frame work). Read more>>

JAXB

JAXB stands for Java Architecture for XML Binding. It provides convenient and efficient way to bind Java object to XML and XML to Java Object. Technically this process is called Marshalling and Unmarshalling. Read more>>

JMX

JMX stands for Java Managing Extensions, it provides a way to monitor and manage remote java applications. Using JMX, you can expose your application attributes, components to management tools like jconsole. Read more>>

LDAP & JDNI

JNDI Tutorial UnboundID ldapsdk tutorial

Logging

Logging is the process of writing log messages during the execution of a program. Logging place a vital role while debugging an Application. Logging using java.util.logging package is explained here. Read more>>

Miscellaneous

You can get intresting topics here. Read more>>

java.net

You will learn about java.net package, sockets, Client-Server application etc., Read more>>

NIO and NIO2

Java NIO stands for Non-Blocking Input-output, it is enhanced version of IO package, by using this library you can develop high-performance IO applications. Read more>>

DOM Parser

A Parser is a program, that is used to validate and extract the useful information from given document. DOM parser creates a tree structure in memory from the input xml document and then waits for requests from client. Read more>>

SAX Parser

A Parser is a program, that is used to validate and extract the useful information from given document. SAX stands for Simple API for XML. SAX parsers operate on each piece of the XML document sequentially, whereas DOM parsers operates on the document as a whole. Read more>>

Programming Questions

You can get programming interview questions here. Read more>>

Reflections

Reflections provides the facility to examine or modify the runtime behavior of applications running in the Java virtual machine. By using reflections you can inspect interfaces, classes, fields and methods at run time. Read more>>

Regular Expressions

Regular expressions are powerful tool for text processing. A regular expression is a sequence of characters that forms a search pattern, mainly used for pattern matching in strings. Regular Expressions are used to search, edit, or manipulate text and data. Read more>>

String programs

String programs Read more>>

System Design Questions

You can find some Intresting design questions here Read more>>

Tools to Analyze Applications

Tools to debug and analyze Java Applications are covered here. Read more>>

Big Data

Hadoop

Hadoop Tutorial Read more>>

Hive

Hive Tutorial Read more>>

Sqoop

Sqoop Tutorial Read more>>

Build Tools

Maven tutorial

Maven Tutorial Read more>>

Database Related

DBUtils

The Commons DbUtils library is a small group of tools that makes working with databases easier. When you use JDBC, you usually have to do a lot of boring, error-prone work to clean up resources. These tools handle all that cleanup for you, so you can focus on what you really want to do: getting and updating data. Read more>>

JDBC

JDBC stands for Java Database Connectivity, and is a platform independent interface between databases and Java. The JDBC API consists of a set of interfaces and classes written in the Java programming language. Read more>>

Java API for ArangoDB

In this tutorial series, I am going to explain how to talk to ArangoDB using Java driver. Read more>>

Hibernate

Hibernate is a ORM tool, implements Java Persistent API (JPI). it is used to persist data into data layer (Database). Read more>>

Hibernate 6

Hibernate is a ORM tool, implements Java Persistent API (JPI). it is used to persist data into data layer (Database). Read more>>

Elasticsearch Java API

Elastic search provides java api, to perform index, create, update, search, delete operations. All Elasticsearch operations are executed using a Client object and asynchronous in nature. Read more>>

Java API for MongoDB

JAVA Client to perform CRUD operations in MongoDB Read more>>

HSQLDB Java API

HSQLDB stands for HyperSQL Database, it is in memory database, used to develop your applications very quickly. Read more>>

Apache Derby

Apache Derby is open source RDBMS (Relational database management system) completely written in Java and maintained by Apache. Read more>>

Data Governance

Apache Atlas tutorial

Apache Atlas is an open governance and metadata framework.Read more>>

Atlas client tutorial

Overview on Atlas clientRead more>>

IDEs

Eclipse IDE examples

Basic examples of Eclipse IDE Read more>>

J2EE

Servlets

A Servlet is simply a java class which responds to a particular type of network request - most commonly an HTTP request. Servlets were designed to solve the problems faced in CGI. Read more>>

JSP

JSP stands for Java Server Pages, is a J2EE technology that helps developers to develop dynamic web pages. JSP is built on top of servlets. Just like standard HTML pages, a JSP page contains HTML tags. Read more>>

AJAX

AJAX stands for Asynchronous JavaScript and XML. AJAX makes browser looks like a desktop application, by allowing you to download the data from server behind the scenes. Read more>>

WebSockets

WebSocket protocol enable the two-way communication between client and server. In 2011, the IETF standardized the WebSocket protocol as RFC 6455. Since then,many browser started implementing and supporting web socket protocol. Read more>>

Web Service

Web service interoperability makes sure that, even applications are written in different languages, they can able to communicate each other using web services. Read more>>

Frameworks

Apache Camel

It is a Java library to design, implement and maintain Enterprise Integration Patterns. It is an integration framework that makes Enterprise integrations easier. Read more>>

Micronaut Framework

Micronaut tutorial Read more>>

Spring Framework

Spring and spring boot covered here. Read more>>

Spark Java

Spark java is a micro frame work, used to build web applications with minimal effort. It is a pure java alternative for developers, who want to develop web applications. Read more>>

Struts2

Struts2 is a framework to build MVC(Model-View-Controller) web applications. Struts2 improves the Application development time. Read more>>

Other Third Party Libraries

Aspect Oriented Programming

AspectJ

Atom Publishing Protocol

Abdera

Bean Mapping Libraries

Modelmapper tutorial Dozer bean mapping tutorial

Bean Validation

Hibernate Validator

Block Chain

Block Chain Basics

Byte Code Manipulation

Javassist

Caching

Caffeine cache tutorial Ehcache tutorial ExpiringMap tutorial Guava Cache JCS Spymemcached

Code Generators

javapoet tutorial

Command line processing

Asciitable Commons CLI Spring Shell

Content Management Systems

CMIS

Dependency Injection frameworks

Dagger 2 Spring

Desktop User Interface Design

JavaFX SWT

Graphs, Charts, network libraries

JanusGraph tutorial JFreeChart Gephi Processing

joda-time

joda time library programs

JPA

JPA And EclipseLink Hibernate

HTTP

HTTP Client HTTP Client 5

Logging

Apache Commons Logging Log4j2 logback SLF4J

Messaging

RabbitMQ ActiveMQ Kafka

Microbenchmarking

JMH

OData

Apache Olingo

Rate limiters

Bucket4j Token Bucket Algorithm implementation

Search

Elastic Search

Servers

Apache tomcat Jetty Building a tiny HTTP Server with com.sun.net.httpserver.HttpServer

Testing 1

Cucumber EasyMock and PowerMock Mockito & PowerMock Hamcrest JMeter Mean Bean

Testing 2

JUnit JUnit5 RestAssured Selenium2 TestNG WireMock

Testing 3

MockWebServer System rules tutorial Playwright tutorial

In Memory Databases

H2 HSQLDB

JSON Parsing

GSON Jackson jq: Json Processing tool tutorial Genson org json javax.json tutorial

JSON Parsing 2

JsonSchema tutorial jsonschema2pojo-core tutorial: Generate pojos from json Moshi json parsing library

Machine Learning

Mahout OpenNLP

Miscellaneous

Barcodes generation tutorial Combinatorics lib Concurrent Package Concurrent Trees GCP Bucket QR Code introductory tutorial

Natural Language Processing

OpenNLP

Property File Processing

Owner Library

Obfuscation

Proguard

PDF Processing

Apache PDFBox itext

Schedulers

Quartz

REST

Jersey

Security

JWT tutorial SSL VTPassword

XLS Sheet Processing

JXL

Template Processing Engine

Freemarker tutorial

UML

PlantUML

YAML

YAML Parsing using Jackson

TOML

TOML Parsing using Jackson