[Chapter 26] 26.6 java.lang.reflect.Method (JDK 1.1)

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| Chapter 26 The java.lang.reflect Package |

## 26.6 java.lang.reflect.Method (JDK 1.1)

###

This class represents a method. Instances of `Method` are obtained by calling the `getMethod()` and related methods of `java.lang.Class`. `Method` implements the `Member` interface, so you can use the methods of that interface to obtain the method name, modifiers, and declaring class. In addition, `getReturnType()`, `getParameterTypes()`, and `getExceptionTypes()` also return important information about the represented method.

Perhaps most important, the `invoke()` method allows the method represented by the `Method` object to be invoked with a specified array of argument values. If any of the arguments are of primitive types, they must be converted to their corresponding wrapper object types in order to be passed to `invoke()`. If the represented method is an instance method (i.e., if it is not `static`), the instance on which it should be invoked must also be passed to `invoke()`. The return value of the represented method is returned by `invoke()`. If the return value is a primitive value, it is first converted to the corresponding wrapper type. If the invoked method causes an exception, the `Throwable` object it throws is wrapped within the `InvocationTargetException` that is thrown by `invoke()`.

    public final class Method extends Object implements Member {
        // No Constructor
        // Public Instance Methods
                public boolean equals(Object obj);  // Overrides Object
                public Class getDeclaringClass();  // From Member
                public Class[] getExceptionTypes();
                public native int getModifiers();  // From Member
                public String getName();  // From Member
                public Class[] getParameterTypes();
                public Class getReturnType();
                public int hashCode();  // Overrides Object
                public native Object invoke(Object obj, Object[] args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException;
                public String toString();  // Overrides Object
    }

### Passed To:

EventSetDescriptor(), IndexedPropertyDescriptor(), MethodDescriptor(), PropertyDescriptor()

### Returned By:

Class.getDeclaredMethod(), Class.getDeclaredMethods(), Class.getMethod(), Class.getMethods(), EventSetDescriptor.getAddListenerMethod(), EventSetDescriptor.getListenerMethods(), EventSetDescriptor.getRemoveListenerMethod(), IndexedPropertyDescriptor.getIndexedReadMethod(), IndexedPropertyDescriptor.getIndexedWriteMethod(), MethodDescriptor.getMethod(), PropertyDescriptor.getReadMethod(), PropertyDescriptor.getWriteMethod()

java.lang.reflect.Member (JDK 1.1) |  | java.lang.reflect.Modifier (JDK 1.1)