The constructor class provides information about a single constructor for a class and it also provides access to that constructor.
The getDeclaringClass() method of java.lang.reflect.Constructor is used to return the class object representing the class that declares the constructor represented by this object. This method returns the name of the source class of this constructor.
Syntax:
public Class<T> getDeclaringClass()
Parameters: This method accepts nothing.
Return: This method returns an object representing the declaring class of the underlying member.
Below programs illustrate getDeclaringClass() method:
Program 1:
// Java program to illustrate getDeclaringClass() method import java.lang.reflect.Constructor; public class Main { public static void main(String[] args) { // get Constructor object array // from String class object Constructor[] cons = String.class.getConstructors(); Constructor constructor = cons[0]; // apply getDeclaringClass method Class classObj = constructor.getDeclaringClass(); // print result System.out.println("Source class name : " + classObj.getName()); }} |
Output:
Source class name : java.lang.String
Program 2:
// Java program to illustrate getDeclaringClass() method import java.lang.reflect.Constructor;import java.util.ArrayList; public class Main { public static void main(String[] args) { // get Constructor object for class object Constructor constructor = ArrayList.class.getConstructors()[0]; // apply getDeclaringClass method Class classObj = constructor.getDeclaringClass(); // print result System.out.println( "Class Name : " + classObj.getName()); }} |
Output:
Class Name : java.util.ArrayList
