#Java reflection class how to#
#Java reflection class software#

For example, if the class is a double, use a double specific method. We will get the metadata of below class named Guru99Base. 9 I am trying to determine the class type of a class using reflection and then do something specific. Java Reflection API is used to manipulate class and its.

Public Class getInterfaces() : Returns an array of interfaces implemented by the specified class Java Reflection is a process of examining or modifying the run time behavior of a class at run time.

public Class getSuperclass(): Returns the super class reference.

Public String getName (): Returns the name of the class.

Modifier: This class is used to gather information about a particular access modifier.

Constructor: This class is used to gather declarative information such as access modifier, name and parameter types of a constructor.

Method: This class is used to gather declarative information such as access modifier, return type, name, parameter types and exception type of a method.

Field: This class is used to gather declarative information such as datatype, access modifier, name and value of a variable.

#Java reflection class how to#

Example 4: How to get Metadata of Constructorsįollowing is a list of various Java classes in to implement reflection.Example 3: How to get Metadata of Method.

Example 2: How to get Metadata of Variable.Example 1: How to get Metadata of Class.I wouldnt consider instanceof to fall under the first definition: the program examines a value, not its own structure, and it doesnt involve any values representing program structure (in Java:, , etc.) the hallmark of reflection is working with such values. From the classes you can obtain information about Class Name Class Modifies (public, private, synchronized etc. Java, like many other languages, is statically typed.

#Java reflection class software#

Field serves the same purpose as the whole reflection mechanism, analyze a software component and describe its capabilities dynamically, at run time rather than at compile time. This is provided by the package and elements in Class. Inspecting classes is often the first thing you do when using Reflection. The ability of the software to analyze itself is known as Reflection. How to get complete information about a class Introspection should not be confused with reflection. Using Java Reflection you can inspect Java classes at runtime.The package provides many classes to implement reflection java.Methods of the class is used to gather the complete metadata of a particular class. One advantage of reflection API in Java is, it can manipulate private members of the class too. Reflection API in Java is used to manipulate class and its members which include fields, methods, constructor, etc. Java Reflection is the process of analyzing and modifying all the capabilities of a class at runtime.