25 

    25 

    26 package java.beans;

    26 package java.beans;

    27 

    27 

    28 import java.lang.ref.Reference;

    28 import java.lang.ref.Reference;

    29 import java.lang.reflect.Method;

    29 import java.lang.reflect.Method;

    30 

    31 

    31 /**

    32 /**

    32  * An EventSetDescriptor describes a group of events that a given Java

    33  * An EventSetDescriptor describes a group of events that a given Java

    33  * bean fires.

    34  * bean fires.

    34  * <P>

    35  * <P>

   173 

   174 

   174         setAddListenerMethod(getMethod(sourceClass, addListenerMethodName, 1));

   175         setAddListenerMethod(getMethod(sourceClass, addListenerMethodName, 1));

   175         setRemoveListenerMethod(getMethod(sourceClass, removeListenerMethodName, 1));

   176         setRemoveListenerMethod(getMethod(sourceClass, removeListenerMethodName, 1));

   176 

   177 

   177         // Be more forgiving of not finding the getListener method.

   178         // Be more forgiving of not finding the getListener method.

   182         }

   181         }

   183     }

   182     }

   184 

   183 

   185     private static Method getMethod(Class cls, String name, int args)

   184     private static Method getMethod(Class cls, String name, int args)

   186         throws IntrospectionException {

   185         throws IntrospectionException {

   187         if (name == null) {

   186         if (name == null) {

   188             return null;

   187             return null;

   189         }

   188         }

   190         Method method = Introspector.findMethod(cls, name, args);

   189         Method method = Introspector.findMethod(cls, name, args);

   192             throw new IntrospectionException("Method not found: " + name +

   191             throw new IntrospectionException("Method not found: " + name +

   193                                              " on class " + cls.getName());

   192                                              " on class " + cls.getName());

   194         }

   193         }

   195         return method;

   194         return method;

   196     }

   195     }