Using the FilenameFilter interface to get the extension of a file

Question

Hello...
I am trying to write a java program which is going to parse multiple xml documents and load them into the db. In a directory, there could be files other than xml files. Hence, i want to parse only files which have an .xml extension. I am using the FilenameFilter interface to get the extension of the files in a particular directory. However i am getting confused with the way it shd work...i am attaching herewith the code ...pl help me. I would appreciate if u could send me some sample code.
/* Author : Jayashree */
import com.xhive.XhiveDriverFactory;
import com.xhive.error.XhiveException;
import com.xhive.core.interfaces.XhiveTransactionIf;
import com.xhive.dom.interfaces.XhiveDocumentIf;
import com.xhive.core.interfaces.XhiveDatabaseIf;
import com.xhive.core.interfaces.XhiveConnectionIf;
import com.xhive.dom.interfaces.XhiveLibraryIf;
import org.w3c.dom.Document;
import java.io.*;
public class MultiXML
public static void main(String args[])
try
String administratorName = "Administrator";
String administratorPassword = "secret";
String DBName = "FirstDB";
XhiveConnectionIf fConnection = XhiveDriverFactory.getDriver().getConnection();
System.out.println("Got the connection");
fConnection.connect(administratorName,administratorPassword,DBName);
System.out.println("Connected");
XhiveTransactionIf fTrans = fConnection.createTransaction();
System.out.println("Transaction");
fTrans.begin();
System.out.println("Transaction begun");
XhiveDatabaseIf fDBase = fTrans.getDatabase();
String DBName1 = fDBase.getName();
System.out.println(DBName1);
XhiveLibraryIf rootLibrary = fDBase.getRoot();
System.out.println("Got the root");
File fDir = new File("e:/xhive");
File[] files = fDir.listFiles(new FileFilter("xml"));
int i = 0;
while ((i < files.length))
Document fDoc = null;
System.out.println("Document Initialized");
try
fDoc = rootLibrary.parseDocument(new File(files[i]+".xml").toURL(), XhiveLibraryIf.PARSER_NO_VALIDATION);
rootLibrary.appendChild(fDoc);
System.out.println("Appended");
catch (Exception e)
e.printStackTrace();
i++;
fTrans.commit();
System.out.println("Committed");
fTrans.terminate();
System.out.println("Terminated");
fConnection.close();
System.out.println("Connection Closed");
catch(Exception e)
System.out.println(e.getMessage());
In the above code, I am trying to list all those files which have the filter as .xml. I am unable to understand what code i need to write in the accept method of the FilenameFilter interface which accepts the directory name and the file name. There could be a directory which consists of multiple xml files too..this is where i am finding a problem
Regards,
Jayashree

Answer 1

This sample code uses an inner anonymous FilenameFilter that takes all readable files with a ".xml" extension.
File[] fileList = dir.listFiles (new FilenameFilter () {
    public boolean accept (File dir, String name) {
        if (!name.trim().endsWith (".xml"))
            return false;
        File f = new File (dir, name);
        if (!f.isFile())
            return false;
        if (!f.canRead())
            return false;
        return true;
});Please post any question if you don't understand.
Matthieu