Examples of java.beans.IntrospectionException

java.beans.IntrospectionException
Thrown when an exception happens during Introspection.
Typical causes include not being able to map a string class name to a Class object, not being able to resolve a string method name, or specifying a method name that has the wrong type signature for its intended use.

    {
      return (PropertyEditor) c.newInstance();
    }
    catch (Exception e)
    {
      throw new IntrospectionException("Unable to create PropertyEditor.");
    }
  }

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    {
        Map settersForClassName = (Map) setterMap.get(className);


        if (settersForClassName == null)
        {
            throw new IntrospectionException("No setter Map for " + className + " available!");
        }


        Method setter = (Method) settersForClassName.get(propName);


        if (setter == null)

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    {
        Map gettersForClassName = (Map) getterMap.get(className);


        if (gettersForClassName == null)
        {
            throw new IntrospectionException("No getter Map for " + className + " available!");
        }


        Method getter = (Method) gettersForClassName.get(propName);


        if (getter == null)

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    String mappedGetterName, String mappedSetterName)
    throws IntrospectionException {


        super(propertyName, null, null);
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name");
        }
        setName(propertyName);


        // search the mapped get and set methods
        mappedReadMethod =

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        Method mappedGetter, Method mappedSetter)
        throws IntrospectionException {


        super(propertyName, mappedGetter, mappedSetter);
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name");
        }
        setName(propertyName);
        mappedReadMethod = mappedGetter;
        mappedWriteMethod = mappedSetter;
        findMappedPropertyType();

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        try {
            mappedPropertyType = null;
            if (mappedReadMethod != null) {
                if (mappedReadMethod.getParameterTypes().length != 1) {
                    throw new IntrospectionException
                        ("bad mapped read method arg count");
                }
                mappedPropertyType =
                    mappedReadMethod.getReturnType();
                if (mappedPropertyType == Void.TYPE) {
                    throw new IntrospectionException
                        ("mapped read method " +
                         mappedReadMethod.getName() + " returns void");
                }
            }
            if (mappedWriteMethod != null) {
                Class params[] = mappedWriteMethod.getParameterTypes();
                if (params.length != 2) {
                    throw new IntrospectionException
                        ("bad mapped write method arg count");
                }
                if (mappedPropertyType != null &&
                    mappedPropertyType != params[1]) {
                    throw new IntrospectionException
                        ("type mismatch between mapped read and write methods");
                }
                mappedPropertyType = params[1];
            }
        } catch (IntrospectionException ex) {

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  if (m != null ) {
      return m;
  }


  // We failed to find a suitable method
  throw new IntrospectionException("No method \"" + methodName +
                                         "\" with " + argCount + " arg(s)");
    }

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        if (m != null ) {
            return m;
        }


        // We failed to find a suitable method
        throw new IntrospectionException("No method \"" + methodName +
                   "\" with " + argCount + " arg(s) of matching types.");
    }

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        }
      }


      if (!isSuper)
      {
        throw new IntrospectionException(stopClass.getName() +
                                         " not superclass of " +
                                         beanClass.getName());
      }
    }

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      return (_isSubclass(argTypes[0], EventObject.class));
    }
    catch (Exception ex)
    {
      throw new IntrospectionException("Unexpected reflection exception: " + ex);
    }
  }

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