POJava is a set of small light-weight Java libraries addressing common business-oriented
software development needs. Each of the currently three libraries is designed with some
guiding principles in mind: Keep it small and simple. Avoid unnecessary dependencies.
POJava gets its name from "Plain Old Java". Like "Plain Old Telephone Service" or "Plain
Old XML", it's pretty basic stuff. Here's how it's organized.
| POJava Utility |
This base jar provides common functions for string and binary conversions,
such as compression, encryption, and encoding. It also includes tools for accessing,
validating, and altering data using reflection, external process invocation, and language
binding. It currently also supports the DateTime package, which is being spun off into
its own project POJava DateTime.
|
| POJava DateTime |
The DateTime library provides an immutable object, "DateTime", intended to improve upon
Java's native Date, Timestamp, Calendar, and SimpleDateFormat classes. DateTime's
most prominent feature is its ability to parse dates and times from a wide variety of
formats and languages. DateTime is a business-oriented library, intentionally very small, but
easily supporting time zone conversions, American or European ordering of month and day,
ISO8601 dates, relative dates and date-based math. It also provides integrated formatting
with built-in extensions such as a choice of fractional seconds to any length rather than
just milliseconds, and a choice of BC/AD vs. BCE/CE to describe eras.
|
| POJava Persistence |
This library provides database-to-object (ORM) and object-to-xml conversions in both
directions. It depends only on POJava, so it also has a very small footprint.
|
POJava's DateTime class was recently moved into its own library. This will keep it focused on
one well-defined task, supporting business use of Date and Time. Keeping it separate
helps ensure that it stays small in the future (under 32K with no dependencies!) and keeps
it safely away from concerns such as whether encryption is supported and in what countries.
