The getDeclaringClass() method of java.lang.Class class is used to get the declaring class of this class. The method returns the declaring class of this class, if this class or interface is a member of another class. Else this method returns null.
Syntax:
public Constructor getDeclaringClass()
Parameter: This method does not accept any parameter.
Return Value: This method returns the declaring class of this class if this class or interface is a member of another class. Else this method returns null.
Exception This method throws SecurityException if a security manager is present and the security conditions are not met.
Below programs demonstrate the getDeclaringClass() method.
Example 1:
// Java program to demonstrate getDeclaringClass() 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 declaring class of myClass        // using getDeclaringClass() constructor        System.out.println("DeclaringClass of myClass: "                           + myClass.getDeclaringClass());    }} |
Class represented by myClass: class Test DeclaringClass of myClass: null
Example 1:
// Java program to demonstrate getDeclaringClass() method  import java.util.*;  class Main {      class Arr {    };      public Object obj;      Main()    {          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 declaring class of myClass        // using getDeclaringClass() constructor        System.out.println("DeclaringClass of myClass: "                           + myClass.getDeclaringClass());    }} |
DeclaringClass of myClass: class Main
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getDeclaringClass–
