Debugger stopped on uncompilable source code.

Question

Dear Friends,
I got the Error as like
Debugger stopped on uncompilable source code.
The code is down!!!
I could not figure out the reason, why it comes. !!! I read data from a txt file and generate an XML file.
please any 1 help me to solve this
Priya
package java.Associations;
import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
import com.sun.org.apache.xml.internal.serialize.OutputFormat;
import com.sun.org.apache.xml.internal.serialize.XMLSerializer;
public class XMLCreatorExample {
//No generics
List myData;
Document dom;
public XMLCreatorExample() {
//create a list to hold the data
myData = new ArrayList();
//initialize the list
loadData();
//Get a DOM object
createDocument();
public void runExample(){
System.out.println("Started .. ");
createDOMTree();
printToFile();
System.out.println("Generated file successfully.");
* Add a list of books to the list
* In a production system you might populate the list from a DB
private void loadData(){
Scanner inputFile = null;
try {
inputFile = new Scanner(new File("C:\\coding\\weka\\1.txt"));
while(inputFile.hasNext()) {
myData.add(inputFile.next());
catch(FileNotFoundException fNFE) {
System.out.println("The file was not found");
finally {
inputFile.close();
//myData.add(new Book("Head First Java", "Kathy Sierra .. etc","Java 1.5"));
//myData.add(new Book("Head First Design Patterns", "Kathy Sierra .. etc","Java Architect"));
* Using JAXP in implementation independent manner create a document object
* using which we create a xml tree in memory
private void createDocument() {
//get an instance of factory
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
//get an instance of builder
DocumentBuilder db = dbf.newDocumentBuilder();
//create an instance of DOM
dom = db.newDocument();
}catch(ParserConfigurationException pce) {
//dump it
System.out.println("Error while trying to instantiate DocumentBuilder " + pce);
System.exit(1);
* The real workhorse which creates the XML structure
private void createDOMTree(){
//create the root element <Books>
Element rootEle = dom.createElement("Books");
dom.appendChild(rootEle);
//No enhanced for
Iterator it  = myData.iterator();
while(it.hasNext()) {
Book b = (Book)it.next();
//For each Book object  create <Book> element and attach it to root
Element bookEle = createBookElement(b);
rootEle.appendChild(bookEle);
* Helper method which creates a XML element <Book>
* @param b The book for which we need to create an xml representation
* @return XML element snippet representing a book
private Element createBookElement(Book b){
Element bookEle = dom.createElement("Book");
bookEle.setAttribute("Subject", b.getSubject());
//create author element and author text node and attach it to bookElement
Element authEle = dom.createElement("Author");
Text authText = dom.createTextNode(b.getAuthor());
authEle.appendChild(authText);
bookEle.appendChild(authEle);
//create title element and title text node and attach it to bookElement
Element titleEle = dom.createElement("Title");
Text titleText = dom.createTextNode(b.getTitle());
titleEle.appendChild(titleText);
bookEle.appendChild(titleEle);
return bookEle;
* This method uses Xerces specific classes
* prints the XML document to file.
private void printToFile(){
try
//print
OutputFormat format = new OutputFormat(dom);
format.setIndenting(true);
//to generate output to console use this serializer
//XMLSerializer serializer = new XMLSerializer(System.out, format);
//to generate a file output use fileoutputstream instead of system.out
XMLSerializer serializer = new XMLSerializer(
new FileOutputStream(new File("C:\\coding\\book.xml")), format);
serializer.serialize(dom);
} catch(IOException ie) {
ie.printStackTrace();
public static void main(String args[]) {
//create an instance
XMLCreatorExample xce = new XMLCreatorExample();
//run the example
xce.runExample();/**/
package java.Associations;
public class Book {
private String title;
private String author;
private String subject;
public Book(String subject) {
this.subject = subject;
public Book() {
public Book(String title, String author, String subject) {
this.title = title;
this.author = author;
this.subject = subject;
public String getAuthor() {
return author;
public void setAuthor(String author) {
this.author = author;
public String getTitle() {
return title;
public void setTitle(String title) {
this.title = title;
public String getSubject() {
return subject;
public void setSubject(String subject) {
this.subject = subject;
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append(" { Book Details --");
sb.append("Title:" + getTitle());
sb.append(", ");
sb.append("Author:" + getAuthor());
sb.append(", ");
sb.append("Subject:" + getSubject());
sb.append(". } \n");
return sb.toString();
}

Answer 1

One of your .java files doesn't compile (has compilation errors.). Make sure there are no compilation errors before you attempt to run/debug the program.
P.S Why are you posting this across multiple forums?