Program: 81667
Project: 81667
Buggy source:
public void doWork(Window window,MouseEvent e){
  EgDownloaderWindow mainWindow=(EgDownloaderWindow)window;
  SettingWindow settingWindow=(SettingWindow)mainWindow.settingWindow;
  String pageCount=settingWindow.d_pageCountTextField.getText();
  String pageParam=settingWindow.d_pageParamTextField.getText();
  String sourcePrefix=settingWindow.d_sourcePrefixTextField.getText();
  String sourceSuffix=settingWindow.d_sourceSuffixTextField.getText();
  String showPicPrefix=settingWindow.d_showPicPrefixTextField.getText();
  String showPicSuffix=settingWindow.d_showPicPrefixTextField.getText();
  String realUrlPrefix=settingWindow.d_realUrlPrefixTextField.getText();
  String realUrlSuffix=settingWindow.d_realUrlSuffixTextField.getText();
  Pattern p=Pattern.compile("String_Node_Str");
  if ("String_Node_Str".equals(pageCount)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if (!p.matcher(pageCount).matches()) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(pageParam)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(sourcePrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(sourceSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(showPicPrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(showPicSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(realUrlPrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(realUrlSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else {
    mainWindow.setting.setPageCount(Integer.parseInt(pageCount));
    mainWindow.setting.setPageParam(pageParam);
    mainWindow.setting.setSourcePrefix(sourcePrefix);
    mainWindow.setting.setSourceSuffix(sourceSuffix);
    mainWindow.setting.setShowPicPrefix(showPicPrefix);
    mainWindow.setting.setShowPicSuffix(showPicSuffix);
    mainWindow.setting.setRealUrlPrefix(realUrlPrefix);
    mainWindow.setting.setRealUrlSuffix(realUrlSuffix);
    mainWindow.settingDbTemplate.update(mainWindow.setting);
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
}

Fixed version (ground truth):
public void doWork(Window window,MouseEvent e){
  EgDownloaderWindow mainWindow=(EgDownloaderWindow)window;
  SettingWindow settingWindow=(SettingWindow)mainWindow.settingWindow;
  String pageCount=settingWindow.d_pageCountTextField.getText();
  String pageParam=settingWindow.d_pageParamTextField.getText();
  String sourcePrefix=settingWindow.d_sourcePrefixTextField.getText();
  String sourceSuffix=settingWindow.d_sourceSuffixTextField.getText();
  String showPicPrefix=settingWindow.d_showPicPrefixTextField.getText();
  String showPicSuffix=settingWindow.d_showPicSuffixTextField.getText();
  String realUrlPrefix=settingWindow.d_realUrlPrefixTextField.getText();
  String realUrlSuffix=settingWindow.d_realUrlSuffixTextField.getText();
  Pattern p=Pattern.compile("String_Node_Str");
  if ("String_Node_Str".equals(pageCount)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if (!p.matcher(pageCount).matches()) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(pageParam)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(sourcePrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(sourceSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(showPicPrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(showPicSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(realUrlPrefix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else   if ("String_Node_Str".equals(realUrlSuffix)) {
    JOptionPane.showMessageDialog(null,"String_Node_Str");
    return;
  }
 else {
    mainWindow.setting.setPageCount(Integer.parseInt(pageCount));
    mainWindow.setting.setPageParam(pageParam);
    mainWindow.setting.setSourcePrefix(sourcePrefix);
    mainWindow.setting.setSourceSuffix(sourceSuffix);
    mainWindow.setting.setShowPicPrefix(showPicPrefix);
    mainWindow.setting.setShowPicSuffix(showPicSuffix);
    mainWindow.setting.setRealUrlPrefix(realUrlPrefix);
    mainWindow.setting.setRealUrlSuffix(realUrlSuffix);
    mainWindow.settingDbTemplate.update(mainWindow.setting);
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
}