Class getEnclosingConstructor() method in Java with Examples (original) (raw)
Last Updated : 27 Jan, 2022
The getEnclosingConstructor() method of java.lang.Class class is used to get the enclosing constructors of this class. The method returns the enclosing constructors of this class, if this class is a local class or anonymous class declared in that constructor. Else this method returns null.
Syntax:
public Constructor getEnclosingConstructor()
Parameter: This method does not accept any parameter.
Return Value: This method returns the enclosing constructor of this class if this class is a local class or anonymous class declared in that constructor. Else this constructor returns null.
Exception This method throws SecurityException if a security manager is present and the security conditions are not met.
Below programs demonstrate the getEnclosingConstructor() method.
Example 1:
Java
import java.util.*;
public class Test {
`` public static void main(String[] args)
`` throws ClassNotFoundException
`` {
`` Class myClass = Class.forName("Test");
`` System.out.println("Class represented by myClass: "
`` + myClass.toString());
`` System.out.println("EnclosingConstructor of myClass: "
`` + myClass.getEnclosingConstructor());
`` }
}
Output:
Class represented by myClass: class Test EnclosingConstructor of myClass: null
Example 2:
Java
import java.util.*;
class Main {
`` public Object obj;
`` Main()
`` {
`` class Arr {
`` };
`` obj = new Arr();
`` }
`` public static void main(String[] args)
`` throws ClassNotFoundException
`` {
`` Main t = new Main();
`` Class myClass = t.obj.getClass();
`` System.out.println("EnclosingConstructor of myClass: "
`` + myClass.getEnclosingConstructor());
`` }
}
Output:
EnclosingConstructor of myClass: Main()
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getEnclosingConstructor–