Errors in getMethod and invoke ??!!!!

Question

when i write the following code i get a compilation error :
Field[] fields = obj.getClass().getDeclaredFields();
Class c = obj.getClass();
for (int i = 0; i < fields.length; i++)
String fieldName = fields.getName();
if(!Modifier.isFinal(fields[i].getModifiers()))
if(fields[i].getType().isPrimitive())
//put its value directly
String firstChar = fieldName.substring(0,1).toUpperCase();
String methodName = "get" + firstChar + fieldName.substring(1);
Method m=c.getMethod(methodName);
if (m!=null)
Node childPrim;
childPrim=document.createElement(fieldName);
parent.appendChild(childPrim);
Text newText = document.createTextNode( (String)m.invoke(obj) );
     childPrim.appendChild(newText);
the compilation errors are at the getMethod ---> NoSuchMethodException
and at m.invoke(obj) ----> IllegalAccessException
anyone has any idea how to solve that??!!!

Answer 1

i wrote the rest of the code the only errors appear in getMethod and invoke everything else is OK i guess i will copy and paste the code of saving object
thanks soo much and i am soo sorry to disturb u
public void ObjectToNode(J obj,Document document,Node parent)
          Node childNode;
          Element tagName;
          SaveXMLFile save;
          Field[] fields = obj.getClass().getDeclaredFields();
          Class c = obj.getClass();
          for (int i = 0; i < fields.length; i++)
               String fieldName = fields.getName();
               if(!Modifier.isFinal(fields[i].getModifiers()))
                    if(fields[i].getType().isPrimitive())
                         //put its value directly
                         String firstChar = fieldName.substring(0,1).toUpperCase();
                         String methodName = "get" + firstChar + fieldName.substring(1);
                         Method m=c.getMethod(methodName);
                         if (m!=null)
                              Node childPrim;
                              childPrim=document.createElement(fieldName);
                              parent.appendChild(childPrim);
                              Text newText = document.createTextNode( (String)m.invoke(obj) );
                              childPrim.appendChild(newText);
                    else if(fields[i].getType().isArray())
                         //appends each element as a child and check if it is not primative datatype
                         Node childArray;
                         childArray=document.createElement(fieldName);
                         parent.appendChild(childArray);
                         save= new SaveXMLFile();
                    else
                         String firstChar = fieldName.substring(0,1).toUpperCase();
                         String methodName = "get" + firstChar + fieldName.substring(1);
                         Method m = c.getMethod(methodName);
                         if (m!=null)
                              if(m.invoke(obj)!=null) // call the getter
                                   Node childObj;
                                   childObj=document.createElement(fieldName);
                                   parent.appendChild(childObj);
                                   save= new SaveXMLFile();
                                   save.ObjectToNode(m.invoke(obj),document,childObj);
                         else
                              String valueStr="";
                              valueStr=fields[i].toString();
                              Node childObj;
                              childObj=document.createElement(fieldName);
                              parent.appendChild(childObj);
                              Text newText = document.createTextNode( valueStr );
                              childObj.appendChild(newText);