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Java Tutorials

Java » Basics — almost 6 years ago
Database transaction is an important concept to understand while working in database and SQL. Transaction in database is required to protect data and keep it consistent when multiple users access the database at same time. In this database transaction tutorial we will learn what is transaction in database, why do you need transaction in database, ACID properties of database transaction and an example of database transaction along with commit and rollback.
Java » Frameworks — almost 6 years ago
The REST with Spring series is a step by step, in depth tutorial which focuses on building a RESTful web service with Spring. It covers the initial MVC configuration, Security, API Discoverability and HATEOAS, testing and other topics.
Java » Date and Time — about 6 years ago
Its common requirement of a java web application to convert string to date , you can get string from xml document or any file or from database but when you want to show that string in front of user you want to show them as date and for that you need to format in a particular dateformat. This article explains some best ways to convert string to date and date to string on vearious date format e.g. ddMMyyyy or dd-MM-yyyy with simple examples.
Java » Frameworks — over 6 years ago
The purpose of this tutorial is to show how to process and validate a User Registraton HTML form using Spring MVC 3. The full source code for SpringSourcery can be downloaded from the bottom of this tutorial.
Java » Frameworks — over 6 years ago
This is an introductory tutorial about Spring MVC including a code example showing how to implement and configure a basic Spring MVC controller.
Java » Frameworks — over 6 years ago
This tutorial shows how to use Spring, JPA and Hibernate to model and unit test a bi-directional oneToMany relationship. Full source code is included.
Java » Basics — over 6 years ago
This is one of the most popular interview question on String in Java which starts with discussion of What is immutable object , what are the benefits of immutable object , why do you use it and which scenarios do you use it. It can also come once interviewee answers some preliminarily strings questions e.g. What is String pool , What is the difference between String and StringBuffer , What is the difference between StringBuffer and StringBuilder etc.
Java » Networking — over 6 years ago
The tutorial describes a way to implement a Web Crawler in Java; a program which crawls through the internet and indexes web pages for later retrieval by a search engine. The focus is on proper concurrency - that is how to process multiple links at the same time using a breadth-first algorithm without running into threading issues. For now, the links are graphed out and displayed, simple indexing will be implemented in subsequent versions.
Java » Basics — over 6 years ago
A 3 part tutorial series covering control statements in Java, aimed at beginners.
Java » Basics — over 6 years ago
Introduces how Java manages and manipulates data, in the form of Objects and Classes. Covers how to create objects and how to manage them, including when they are destroyed. Introduces topics such as Scope and Constructors among others.
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