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 program to demonstrate // getEnclosingConstructor() method import 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 program to demonstrate // getEnclosingConstructor() method 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();
// 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–