1. class A { 
 2. public A() { 
 3. System.out.println(“hello from a”); 
 4. } 
 5. } 
 6. class B extends A { 
 7. public B () { 
 8. System.out.println(“hello from b”); 
 9. super(); 
 10 } 
 11. } 
 12. public class Test { 
 13. public static void main(String args[]) { 
 14. A a = new B(); 
 15. } 
 16. }  

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