Category: Java > Basics - Difficulty:

This is our series of articles covering introductory-level Java and programming topics. Article 13 part 2 covers the use of multiple classes in object oriented programming.

Grails give you seamless integration with your legacy Java code. If you have Java classes that already map to your legacy databases, Grails allows you to use them unchanged. In this article you'll see examples that use Grails with Hibernate HBM files, and Enterprise JavaBeans 3 annotations with legacy Java classes.

The goal of this tutorial is to show you how to use JDBC's database metadata API, which you can use to get information about tables, views, column names, column types, stored procedures, result sets, and databases. It will be of most interest to those who need to write applications that adapt themselves to the specific capabilities of several database systems or to the content of any database.

After browsing through some old coding projects, I came across a simple 5 card poker game I had to write for a Java course I took back in school. I found the project to be quite fun, and I thought the algorithms for determining each hand were worth sharing. These are no where near complex algorithms, they just provide a decent example of how to convert simple thoughts and problems into code.

This article provides tutorial notes on JDBC ResultSet with Java DB (Derby) JDBC Driver. Topics include ResultSet cursor, scrollable, and update capability; getString() and updateString() methods; updateRow(), insertRow(), and deleteRow() methods