Class Method

public boolean equals(Object obj)

Compare two objects to see if they are semantically equivalent. Two Methods are semantically equivalent if they have the same declaring class, name, and parameter list. This ignores different exception clauses or return types.

Overrides:

equals in interface Object

Parameters:

Returns:

true if they are equal; false if not

public extends Annotation> T getAnnotation(Class annoClass)

Returns the element's annotation for the specified annotation type, or null if no such annotation exists.

Specified by:

extends Annotation> T getAnnotation in interface AnnotatedElement

Overrides:

extends Annotation> T getAnnotation in interface AccessibleObject

Parameters:

Returns:

this element's annotation for the specified type, or null if no such annotation exists.

Throws:

NullPointerException - if the annotation class is null.

public Annotation[] getDeclaredAnnotations()

Returns all annotations directly defined by the element. If there are no annotations directly associated with the element, then a zero-length array will be returned. The returned array may be modified by the client code, but this will have no effect on the annotation content of this class, and hence no effect on the return value of this method for future callers.

Specified by:

getDeclaredAnnotations in interface AnnotatedElement

Overrides:

getDeclaredAnnotations in interface AccessibleObject

Returns:

the annotations directly defined by the element.

Since:

1.5

public Class getDeclaringClass()

Gets the class that declared this method, or the class where this method is a non-inherited member.

Specified by:

getDeclaringClass in interface Member

Returns:

the class that declared this member

public Object getDefaultValue()

If this method is an annotation method, returns the default value for the method. If there is no default value, or if the method is not a member of an annotation type, returns null. Primitive types are wrapped.

Throws:

TypeNotPresentException - if the method returns a Class, and the class cannot be found

Since:

1.5

public Class[] getExceptionTypes()

Get the exception types this method says it throws, in no particular order. If the method has no throws clause, returns a 0-length array (not null).

Returns:

a list of the types in the method's throws clause

public Type[] getGenericExceptionTypes()

Returns an array of Type objects that represents the exception types declared by this method, in declaration order. An array of size zero is returned if this method declares no exceptions.

Returns:

the exception types declared by this method.

Since:

1.5

public Type[] getGenericParameterTypes()

Returns an array of Type objects that represents the parameter list for this method, in declaration order. An array of size zero is returned if this method takes no parameters.

Returns:

a list of the types of the method's parameters

Since:

1.5

public Type getGenericReturnType()

Returns the return type of this method.

Returns:

the return type of this method

Since:

1.5

public int getModifiers()

Gets the modifiers this method uses. Use the Modifier class to interpret the values. A method can only have a subset of the following modifiers: public, private, protected, abstract, static, final, synchronized, native, and strictfp.

Specified by:

getModifiers in interface Member

Returns:

an integer representing the modifiers to this Member

See Also:

Modifier

public String getName()

Gets the name of this method.

Specified by:

getName in interface Member

Returns:

the name of this method

public Annotation[][] getParameterAnnotations()

public Class[] getParameterTypes()

Get the parameter list for this method, in declaration order. If the method takes no parameters, returns a 0-length array (not null).

Returns:

a list of the types of the method's parameters

public Class getReturnType()

Gets the return type of this method.

Returns:

the type of this method

public TypeVariable[] getTypeParameters()

Returns an array of TypeVariable objects that represents the type variables declared by this constructor, in declaration order. An array of size zero is returned if this class has no type variables.

Specified by:

getTypeParameters in interface GenericDeclaration

Returns:

the type variables associated with this class.

Since:

1.5

public int hashCode()

Get the hash code for the Method. The Method hash code is the hash code of its name XOR'd with the hash code of its class name.

Overrides:

hashCode in interface Object

Returns:

the hash code for the object

public Object invoke(Object obj,
                     java.lang.Object... args)
            throws IllegalAccessException,
                   IllegalArgumentException,
                   InvocationTargetException

Invoke the method. Arguments are automatically unwrapped and widened, and the result is automatically wrapped, if needed.

If the method is static, o will be ignored. Otherwise, the method uses dynamic lookup as described in JLS 15.12.4.4. You cannot mimic the behavior of nonvirtual lookup (as in super.foo()). This means you will get a NullPointerException if o is null, and an IllegalArgumentException if it is incompatible with the declaring class of the method. If the method takes 0 arguments, you may use null or a 0-length array for args.

Next, if this Method enforces access control, your runtime context is evaluated, and you may have an IllegalAccessException if you could not acces this method in similar compiled code. If the method is static, and its class is uninitialized, you trigger class initialization, which may end in a ExceptionInInitializerError.

Finally, the method is invoked. If it completes normally, the return value will be null for a void method, a wrapped object for a primitive return method, or the actual return of an Object method. If it completes abruptly, the exception is wrapped in an InvocationTargetException.

Parameters:

args - the arguments to the method

Returns:

the return value of the method, wrapped in the appropriate wrapper if it is primitive

Throws:

IllegalAccessException - if the method could not normally be called by the Java code (i.e. it is not public)

IllegalArgumentException - if the number of arguments is incorrect; if the arguments types are wrong even with a widening conversion; or if o is not an instance of the class or interface declaring this method

InvocationTargetException - if the method throws an exception

NullPointerException - if o is null and this field requires an instance

public boolean isBridge()

Return true if this method is a bridge method. A bridge method is generated by the compiler in some situations involving generics and inheritance.

Since:

1.5

public boolean isSynthetic()

Return true if this method is synthetic, false otherwise.

Specified by:

isSynthetic in interface Member

Since:

1.5

public boolean isVarArgs()

Return true if this is a varargs method, that is if the method takes a variable number of arguments.

Since:

1.5

public String toGenericString()

public String toString()

Get a String representation of the Method. A Method's String representation is "<modifiers> <returntype> <methodname>(<paramtypes>) throws <exceptions>", where everything after ')' is omitted if there are no exceptions.
Example: public static int run(java.lang.Runnable,int)

Overrides:

toString in interface Object

Returns:

the String representation of the Method