#Java reflection method full#
#Java reflection method code#

This is achieved by using the Java class. Using Java Reflection API we can inspect the methods of classes and invoke them at runtime. Returns a string describing this Method, including type parameters.įor further information, you can have a look at API. Returns true if this method was declared to take a variable number of arguments returns false otherwise. Returns true if this method is a synthetic method returns false otherwise. Returns an array of Type objects that represent the formal parameter types, in declaration order, of the method represented by this Constructor object. Returns an array of Type objects that represent the exceptions declared to be thrown by this Constructor object. Uses the constructor represented by this Constructor object to create and initialize a new instance of the constructor’s declaring class, with the specified initialization parameters.Ĭompares this Method against the specified object. Set the accessible flag for this reflected object to the indicated boolean value. Returns an array of TypeVariable objects that represent the type variables declared by the generic declaration represented by this GenericDeclaration object, in declaration order. Returns the name of this constructor, as a string. Returns the Class object representing the class that declares the constructor represented by this object. Returns an array of arrays that represent the annotations on the formal parameters, in declaration order, of the method represented by this Method object. Returns all annotations that are directly present on this element. Returns this element’s annotation for the specified type if such an annotation is present, else null. T getAnnotationâ€‹(Class annotationClass).Returns an AnnotatedType object that represents the use of a type to specify the return type of the method/constructor represented by this Executable.

AnnotatedType getAnnotatedReturnTypeâ€‹().

Returns an AnnotatedType object that represents the use of a type to specify the receiver type of the method/constructor represented by this Executable object.

AnnotatedType getAnnotatedReceiverTypeâ€‹().

Specifically, for the instantiation of an object we use the following method: The obtaining of constructor object is achieved by the perspective methods of the class. Using Java Reflection API we can inspect the constructors of classes and instantiate objects at runtime.

Returns a Field object that reflects the specified public member field of the class or interface represented by this Class object.įor further information, you can have a look at API.ģ.2 Common methods of

Returns an array containing Field objects reflecting all the accessible public fields of the class or interface represented by this Class object. Returns an array containing Method objects reflecting all the public member methods of the class or interface represented by this Class object, including those declared by the class or interface and those inherited from super-classes and super-interfaces. Returns an array of Method objects reflecting all the methods declared by the class or interface represented by this Class object. Returns a Constructor object that reflects the specified public constructor of the class represented by this Class object. Returns an array containing Constructor objects reflecting all the public constructors of the class represented by this Class object. Returns the simple name of the underlying class as given in the source code.

#Java reflection method full#

Returns the full name of the entity represented by this Class object, as a String.

Eclipse IDE for Enterprise Java Developers-Photon.

#Java reflection method code#

The example code in this article was built and run using: If we know the name of the class at compile time, we can do the following:Īfter the creation of the class object, we can use any method of the package according to our needs. Introductionīefore we use the capabilities offered by Reflection API, we must first obtain the object of the class. The classes of Reflection API are part of the package and the methods of Reflection API are parts of the package. We can also use reflection to instantiate an object, invoke itâ€™s methods, change field values. Using reflection we can inspect a class or an interface, get their constructors, methods, and fields information at runtime even though the class is not accessible at compile time. Java Reflection API provides the ability to inspect and modify the runtime behavior of applications.