Java and XML

Outputting a Document

The process of outputting a JDOM Document object is even simpler than the process of creating one. The org.jdom.output package provides helper and utility classes for outputting a Document to various sources. No interface is provided to define required behavior, as output of a Document can be used in a variety of ways, from something as simple as writing to a file to something as complex as triggering events for another application component to use.

Standard XML Output

The most common use for XML data within a JDOM Document is to output that data as XML to a file or another application component, using an OutputStream . Of course, this stream may wrap a console’s output, a file, a URL, or any other construct that can receive data. This task is handled in JDOM by the org.jdom.output.XMLOutputter class. This class provides the following constructors and output method:

public class XMLOutputter {

    // Accept defaults: 2 space indent and new line feeds on
    public XMLOutputter(  );

    // Specify indent, accept default for new line feeds (on)
    public XMLOutputter(String indent);

    // Specify the indention to use and if new line feeds should be used
    public XMLOutputter(String indent, boolean newlines);

    // Output a JDOM Document to a stream
    public void output(Document doc, OutputStream out)throws IOException;

}

When instantiated with the default constructor, this results in a “pretty printing” of the JDOM Document; other options can be supplied for more compact output (such ...