How to create a inputstream without using the file operation

Question

Hi friends
In my application, I have to create a Streamsource object using the below constructor:
public StreamSource(InputStream inputStream)
    Construct a StreamSource from a byte stream. Normally, a stream should be used rather than a reader, so the XML parser can resolve character encoding specified by the XML declaration.
    If this constructor is used to process a stylesheet, normally setSystemId should also be called, so that relative URI references can be resolved.
Parameters:
    inputStream - A valid InputStream reference to an XML stream.*[http://java.sun.com/j2se/1.4.2/docs/api/javax/xml/transform/stream/StreamSource.html#StreamSource(java.io.InputStream) |http://java.sun.com/j2se/1.4.2/docs/api/javax/xml/transform/stream/StreamSource.html#StreamSource(java.io.InputStream) ]*
But for creating the inputstream, i am creating a tempory file, ie I am using fileinputstream.
import java.io.File;
import java.io.FileInputStream;
import java.io.StringReader;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
public class SourceConvertor
    private static Source convertStaxToStream(Source request)
// here the argument to this method is StaxSource and the return type is StreamSource
        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = null;
        File fp = null;
        FileInputStream fInp = null;
        try
            transformer = factory.newTransformer();
            fp = new File("tempFile.txt");
            transformer.transform(request, new StreamResult(fp));
            fInp = new FileInputStream(fp);
        } catch (Exception e)
            e.printStackTrace();
        return new StreamSource(fInp);
    public static void main(String args[])
        try
            String message ="<author><name>Rai</name><book>GodOfSmallThings</book></author>";
            Source original = new StreamSource(new StringReader(message));
            Source converted = convertStaxToStream(original);
            TransformerFactory factory = TransformerFactory.newInstance();
            Transformer transformer = factory.newTransformer();
            transformer.transform(converted, new StreamResult(System.out));
        catch (Exception e)
            // TODO Auto-generated catch block
            e.printStackTrace();
This is not at all a good aproach because evey time it is creating a new file.
So can anyone suggest a better aproach or idea or a simple code snippet so that i can create the inputstream without creating a temporary file.
Thanks in advance:
*[http://www.javamilestone.blogspot.com/  |http://www.javamilestone.blogspot.com/  ] *

Answer 1

Err, a StreamSource is a Source. Check the Javadoc. You can pass it directly to the transform.