A List of Useful Java Libraries

Here you will find a list of Java libraries I found useful for developing software in this platform.

BrowserLauncher2
"BrowserLauncher2, a continuation of the BrowserLauncher project, is a library that facilitates opening a browser from a Java application and directing the browser to a supplied url. In most cases the browser opened will be the user's default browser."

db4o
"db4o is the open source object database that enables Java and .NET developers to slash development time and costs and achieve unprecedented levels of performance. The unique design of db4o's native object database engine makes it the ideal choice to be embedded in equipment and devices, in packaged software running on mobile or desktop platforms, or in real-time control systems - in short: in all Java and .NET environments, where no database administrator (DBA) is present."

HSQLDB
"Lightweight 100% Java SQL Database Engine"

iText
"iText is a library that allows you to generate PDF files on the fly."

JCalendar "JCalendar is a Java date chooser bean for graphically picking a date. JCalendar is composed of several other Java beans, a JDayChooser, a JMonthChooser and a JYearChooser. All these beans have a locale property, provide several icons (Color 16x16, Color 32x32, Mono 16x16 and Mono 32x32) and their own locale property editor. So they can easily be used in GUI builders. Also part of the package is a JDateChooser, a bean composed of an IDateEditor (for direct date editing) and a button for opening a JCalendar for selecting the date."

jFreeChart
"JFreeChart is a free 100% Java chart library that makes it easy for developers to display professional quality charts in their applications. JFreeChart's extensive feature set includes:

  • a consistent and well-documented API, supporting a wide range of chart types;
  • a flexible design that is easy to extend, and targets both server-side and client-side applications;
  • support for many output types, including Swing components, image files (including PNG and JPEG), and vector graphics file formats (including PDF, EPS and SVG);
  • JFreeChart is "open source" or, more specifically, free software. It is distributed under the terms of the GNU Lesser General Public Licence (LGPL), which permits use in proprietary applications."

JExcelApi
"Java Excel API is a mature, open source java API enabling developers to read, write, and modifiy Excel spreadsheets dynamically. Now java developers can read Excel spreadsheets, modify them with a convenient and simple API, and write the changes to any output stream (e.g. disk, HTTP, database, or any socket).

Any operating system which can run a Java virtual machine (i.e., not just Windows) can both process and deliver Excel spreadsheets. Because it is Java, the API can be invoked from within a servlet, thus giving access to Excel spreadsheets over internet and intranet web applications. "

JGoodies Forms
"Build better screens faster

The JGoodies Forms framework helps you lay out and implement elegant Swing panels quickly and consistently. It makes simple things easy and the hard stuff possible, the good design easy and the bad difficult. "

JGoodies Looks
"Free high-fidelity Windows and multi-platform appearance.

The JGoodies look&feels make your Swing applications and applets look better. They have been optimized for readability, precise micro-design and usability."

Meval
"This jar contains a class that evaluates math expressions."

Rhino
"Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users."