Program: 74512
Project: 74512
Buggy source:
/** 
 * process the data content <li> localize the help text <li> format the value <li> handle it as it is an text.
 * @param data data object
 */
protected void processData(IDataContent data){
  String helpText=localize(data,data.getHelpKey(),data.getHelpText());
  data.setHelpText(helpText);
  String text="String_Node_Str";
  if (data.getLabelKey() != null || data.getLabelText() != null) {
    text=localize(data,data.getLabelKey(),data.getLabelText());
  }
 else {
    Object value=data.getValue();
    if (value != null) {
      IStyle style=data.getComputedStyle();
      if (value instanceof Number) {
        String format=style.getNumberFormat();
        NumberFormatter fmt=context.getNumberFormatter(format);
        text=fmt.format((Number)value);
        CSSValue align=style.getProperty(IStyle.STYLE_NUMBER_ALIGN);
        if (align != null && align != CSSValueConstants.NONE_VALUE) {
          data.getStyle().setProperty(IStyle.STYLE_TEXT_ALIGN,align);
        }
      }
 else       if (value instanceof String) {
        StringFormatter fmt=context.getStringFormatter(style.getStringFormat());
        text=fmt.format((String)value);
      }
 else       if (value instanceof Date) {
        DateFormatter fmt=context.getDateFormatter(style.getDateFormat());
        text=fmt.format((Date)value);
      }
 else {
        text=value.toString();
      }
    }
  }
  if (text != null) {
    data.setText(text);
  }
 else {
    data.setText("String_Node_Str");
  }
}

Fixed version (ground truth):
/** 
 * process the data content <li> localize the help text <li> format the value <li> handle it as it is an text.
 * @param data data object
 */
protected void processData(IDataContent data){
  String helpText=localize(data,data.getHelpKey(),data.getHelpText());
  data.setHelpText(helpText);
  String text="String_Node_Str";
  if (data.getLabelKey() != null || data.getLabelText() != null) {
    text=localize(data,data.getLabelKey(),data.getLabelText());
  }
 else {
    Object value=data.getValue();
    if (value instanceof Object[]) {
      Object[] values=(Object[])value;
      if (values.length > 0) {
        value=values[0];
      }
 else {
        value=null;
      }
    }
    if (value != null) {
      IStyle style=data.getComputedStyle();
      if (value instanceof Number) {
        String format=style.getNumberFormat();
        NumberFormatter fmt=context.getNumberFormatter(format);
        text=fmt.format((Number)value);
        CSSValue align=style.getProperty(IStyle.STYLE_NUMBER_ALIGN);
        if (align != null && align != CSSValueConstants.NONE_VALUE) {
          data.getStyle().setProperty(IStyle.STYLE_TEXT_ALIGN,align);
        }
      }
 else       if (value instanceof String) {
        StringFormatter fmt=context.getStringFormatter(style.getStringFormat());
        text=fmt.format((String)value);
      }
 else       if (value instanceof Date) {
        DateFormatter fmt=context.getDateFormatter(style.getDateFormat());
        text=fmt.format((Date)value);
      }
 else {
        text=value.toString();
      }
    }
  }
  if (text != null) {
    data.setText(text);
  }
 else {
    data.setText("String_Node_Str");
  }
}