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
// Java program to demonstrate// getEnclosingConstructor() methodimport java.util.*;public class Test { public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Class.forName("Test"); System.out.println("Class represented by myClass: " + myClass.toString()); // Get the enclosing constructors of myClass // using getEnclosingConstructor() constructor System.out.println("EnclosingConstructor of myClass: " + myClass.getEnclosingConstructor()); }} |
Class represented by myClass: class Test EnclosingConstructor of myClass: null
Example 2:
Java
// Java program to demonstrate// getEnclosingConstructor() methodimport 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(); // returns the Class object Class myClass = t.obj.getClass(); // Get the enclosing constructors of myClass // using getEnclosingConstructor() constructor System.out.println("EnclosingConstructor of myClass: " + myClass.getEnclosingConstructor()); }} |
EnclosingConstructor of myClass: Main()
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getEnclosingConstructor–
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