A comprehensive, community-maintained collection of design pattern implementations in Java, offering well-documented, educational examples to help developers understand and apply common architectural solutions. All designs should be as simple as possible. You should start with KISS, YAGNI, and Do The Simplest Thing That Could Possibly Work principles. Complexity and patterns should only be introduced when they are needed for practical extensibility.
Collection of reusable componentized Design Patterns implemented in Java. The implementations will not be limited to those from GoF. Long term aim is to provide a full catalog of Software Engineering best practices in Java along with show case demos.
jSql provides feature to filter the java collection using SQL similar syntax. Currently <,>,>=,<=,= ,and,or operators are supported, soon in,like,between and order by will be supported.
The Spiffy framework is a collection of often used helper methods and utility classes used in industry. Such methods and classes solves existing and re-ocuring practical problems and remedies annoying features of the Java language.
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Strata is a collection of J2EE frameworks designed to help jumpstart any application. From mapping Relational Databases to definining logging services, Strata is an all encompassing set of frameworks to help put your project on solid ground. This project
DMDF has collection of Frameworks for distribute your domain model. The Domain Model Transportation framework [sub project] let you use your own domain model replace DTO.