If you are upset about the huge amount of memory and processor time the traditional report libraries use, or if you are upset with the several you'll-never-need dependencies added by them, or if you dislike the edit-on-the-code-than-edit-the-template-at-the-design-application-than-compile-both-and-finally-try-if-fixes dance every time you need to fix a little bug in your reports, or even if you just want a simple and efficient way to generate reports, then is just for you!

reportGenerator.beginPageHeaderCenter();
   reportGenerator.addText("I'm a report page header");
   reportGenerator.addSeparatorLine();
reportGenerator.endPageHeaderCenter();
      

    Nerval Reports is a lightweight report creation library, focused on minimal computational costs. Instead of the highly expensive way of well-known engines like Jasper Reports, where performance and data reiteration is a big and set aside problem (and also is the report design as a non-programming task), at Nerval Reports the data should be sent directly when iterating through it and the design is mainly focused on the programmer's side. For example, when using relational databases, one will create its report while iterating through the result set - instead of creating a bunch of collections to pass them to the library:

reportGenerator.beginTable(2);

 /* Generate table header */
reportGenerator.beginTableHeader();
reportGenerator.beginTableHeaderRow();
reportGenerator.addTableHeaderCell("Name");
reportGenerator.addTableHeaderCell("City");
reportGenerator.endTableHeaderRow();
reportGenerator.endTableHeader();

/* Generate table rows. */
try {
   resultSet = doDatabaseSelect();
   while (result.next()) {
      reportGenerator.beginTableRow();
      reportGenerator.addTableCell(resultSet.getString(NAME));
      reportGenerator.addTableCell(resultSet.getString(CITY));
      reportGenerator.endTableRow();
   }
} finally {
   if (resultSet != null) {
      resultSet.close();
   }
}

/* Done */
reportGenerator.endTable();
      

Each project should include just the generators it needs (and the report code is generic enough to work on all generators with little to no changes), keeping your project dependencies only to what it really needs (Why other libraries requires some pdf libraries when you just want to generate a CSV file? Or why to include HTML support when you just need a direct PDF creation?).

      <dependency>
         <groupId>net.sf.nervalreports</groupId>
         <artifactId>pdf-generator</artifactId>
         <version>1.1.1</version>
      </dependency>
      

Try some examples or read our docs for more information, and start using NervalReports at your projects now!