Java Reference
In-Depth Information
After executing the preceding example, a new report, or jrprint file, is saved to disk.
We can view it by using the JasperViewer utility included with JasperReports.
The JasperViewer utility is discussed in detail in Chapter 3.
In this example, we created the report and immediately saved it to disk. The
JasperFillManager class also contains methods to send a report to an output
stream, or to store it in memory in the form of a JasperPrint object. Storing the
compiled report in a JasperPrint object allows us to further manipulate the report.
We could, for example, export it to PDF or another format.
The method used to store a report into a JasperPrint object is JasperFillManager.
fillReport() . The method used to send the report to an output stream is
JasperFillManager.fillReportToStream() . These two methods accept the same
parameters as JasperFillManager.fillReportToFile() , and are trivial to use
once we are familiar with this method. Refer to the JasperReports API for details.
In the next example, we will fill our report and immediately export it to PDF by
taking advantage of the net.sf.jasperreports.engine.JasperRunManager.
runReportToPDFStream() method.
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