Logback is intended as a successor to the popular log4j project, and was designed by log4j's founder, Ceki Gulcu. The basic architecture is sufficiently generic so as to apply under different circumstances. It is divided into three modules. The Core module lays the groundwork for the other two modules, whereas the Classic module can be assimilated to an improved version of log4j. It natively implements the SLF4J API so that you can readily switch back and forth between logback and other logging systems, such as log4j or JDK14 Logging. The Access module integrates with Servlet containers to provide HTTP access log functionality. You can easily build your own modules on top of the Core module.
tadedon is a set of utilities that form a foundation for applications written with one of the many Java frameworks, such as GWT, GIN, Guice, Google App Engine, commons-configuration, and many others. It lets you specify the default configuration of your application and upgrade it automatically on each new release. It can redirect all java.util.logging to slf4j and easily configure logback. It can bind application configuration in a Guice module. It supports @PostConstruct and @PreDestroy annotations (JSR 250) in Guice applications. It lets you annotate your methods with @Transactional annotation. It supports Guice injector stage in your Web application. It lets you test your Guice managed servlets and filters without needing a real servlet container. It lets you use Guice Matchers for matching super class, interface, and type literal annotations. It can inject event bus to your GWT applications with the help of GIN.
Jukebox is a collection of reusable components that allow you to create a flexible server-side and middleware framework. It features semaphores and services (not quite your usual set), a Finite State Machine implementation based on Generics, a Datastream framework (data producers, consumers and loggers), and a JDK 1.6 compliant JMX framework based on Annotations.
MoMELog very simple and extensible J2ME logging framework intended to be used at development time, consisting of a small core and extensions. It provides extensions intended to format logging based on conversion pattern, display logging information on a device's or emulator's screen, and collect it in a destination file. It adjusts to restrictions of the J2ME architecture, gives possibilities for declarative and programmatical configuration, and is CLDC 1.1 compliant.
The DPML SDK is a management platform for Java-based component development, resource management, and deployment. It is composed of the Transit resource management layer, the Depot multi-project build system, the Metro component management runtime engine, and the Station application management console.
Simple Log is a small library that does logging very simply and requires you to do almost nothing (other than actually logging) to get log output to happen. It is much simpler to use than a logging framework, especially in terms of configuration. It doesn't attempt to solve every logging problem in one package, but contains enough features to be a viable alternative for most applications that need logging. This tool will handle the logging needs of most small- to large-sized projects, but with an almost non-existent learning curve.
Expresso Framework is an open standards-based J2EE architectural framework that allows the developer to concentrate on application logic. It is a library of extensible Java Server application framework components for creating database-driven Web applications based on open standards. Expresso integrates with Apache Jakarta Struts, which emphasizes presentation and application configuration, and bringing a powerful tag library to Expresso. Expresso adds capabilities for security, robust object-relational mapping, background job handling and scheduling, self-tests, logging integration, automated table manipulation, database connection pooling, email connectivity, event notification, error handling, caching, internationalization, XML automation, testing, registration objects, configuration management, workflow, automatic database maintenance, and a JSP tag library.
Log4j is a logging package written in Java. Log4j allows you to log to a file, a java.io.Writer, a remote server, or a syslog daemon. The package is designed so that log statements can remain in shipped code without incurring a high performance cost. One distinctive feature of log4j is the notion of hierarchical loggers. Using hierarchical loggers, it is possible to select (at runtime) which log statements are output at arbitrary granularity. Users can choose to implement their own log formats and output strategies.