public static int checkField(int luaState,Object obj,String fieldName) throws LuaException {
  LuaState L=LuaStateFactory.getExistingState(luaState);
synchronized (L) {
    Field field=null;
    Class objClass;
    if (obj instanceof Class) {
      objClass=(Class)obj;
    }
 else {
      objClass=obj.getClass();
    }
    try {
      field=objClass.getField(fieldName);
    }
 catch (    Exception e) {
      return 0;
    }
    if (field == null) {
      return 0;
    }
    Object ret=null;
    try {
      ret=field.get(obj);
    }
 catch (    Exception e1) {
      return 0;
    }
    if (obj == null) {
      return 0;
    }
    L.pushObjectValue(ret);
    return 1;
  }
}

public static int checkField ( int luaState , Object obj , String fieldName ) throws LuaException { LuaState L = LuaStateFactory . getExistingState ( luaState ) ; synchronized ( L ) { Field field = null ; Class objClass ; if ( obj instanceof Class ) { objClass = ( Class ) obj ; } else { objClass = obj . getClass ( ) ; } try { field = objClass . getField ( fieldName ) ; } catch ( Exception e ) { return 0 ; } if ( field == null ) { return 0 ; } Object ret = null ; try { ret = field . get ( obj ) ; } catch ( Exception e1 ) { return 0 ; } if ( obj == null ) { return 0 ; } L . pushObjectValue ( ret ) ; return 1 ; } }
checks if there is a field on the obj with the given name
