Member Interface in Java Reflection

`Member` interface in Reflection API

Introduction

Member interface is part of the Reflection API and represents a single member (Field, Method or Constructor) of a class.
It is present in the java.lang.reflect package.
It provides methods to get metadata about the member such as its name, declaring class and modifiers.
The classes that implement Member interface are:
- Field – represents class fields (variables)
- Method – represents class methods
- Constructor – represents class constructors
Note: Class class does not implement Member interface because it represents the class itself, not a member inside it.

Important Methods of `Member` Interface

Some important methods of Member interface are as follows :-

S.No	Method	Use
1	`getName()`	Returns the name of the member (field/method/constructor).
2	`getDeclaringClass()`	Returns the `Class` object representing the class where this member is declared.
3	`getModifiers()`	Returns the Java language modifiers (public, private, static, etc.) as an int.
4	`isSynthetic()`	Checks if the member is a compiler-generated synthetic member.

Program:

import java.lang.reflect.*;

class Student
{
    public String name;
    private int age;

    public Student() {}
    public void study() {}
}

public class MainApp
{
    public static void main(String[] args)
    {
        Class<?> clazz = Student.class;

        // Get declared fields and print Member details
        for (Field field : clazz.getDeclaredFields())
        {
            System.out.println("\nMember Name: " + field.getName());
            System.out.println("Declaring Class: " + field.getDeclaringClass().getSimpleName());
            System.out.println("Modifiers: " + Modifier.toString(field.getModifiers()));
            System.out.println("Is Synthetic: " + field.isSynthetic());
        }

        // Get declared methods and print Member details
        for (Method method : clazz.getDeclaredMethods())
        {
            System.out.println("\nMember Name: " + method.getName());
            System.out.println("Declaring Class: " + method.getDeclaringClass().getSimpleName());
            System.out.println("Modifiers: " + Modifier.toString(method.getModifiers()));
            System.out.println("Is Synthetic: " + method.isSynthetic());
        }

        // Get declared constructors and print Member details
        for (Constructor<?> constructor : clazz.getDeclaredConstructors())
        {
            System.out.println("\nMember Name: " + constructor.getName());
            System.out.println("Declaring Class: " + constructor.getDeclaringClass().getSimpleName());
            System.out.println("Modifiers: " + Modifier.toString(constructor.getModifiers()));
            System.out.println("Is Synthetic: " + constructor.isSynthetic());
        }
    }
}

Output:

Member Name: name
Declaring Class: Student
Modifiers: public
Is Synthetic: false

Member Name: age
Declaring Class: Student
Modifiers: private
Is Synthetic: false

Member Name: study
Declaring Class: Student
Modifiers: public
Is Synthetic: false

Member Name: Student
Declaring Class: Student
Modifiers: public
Is Synthetic: false

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`Member` interface in Reflection API

Introduction

Important Methods of `Member` Interface

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Member interface in Reflection API

Introduction

Important Methods of Member Interface

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`Member` interface in Reflection API

Important Methods of `Member` Interface