Using the interface and class definitions below. Write the headings of the methods which still need to be defined in the class Class2. Public interface Interface1 {public float method1 (int 1);} public interface Interface2 extends Interface1 {public int method2 (int i); public void method3(int i);} public abstract class Classs1 {public float method1 (int anInt) {return anInt * 2.0f;} public abstract void method3 (Object anObject); public abstract void method4(int anInt);} public class Class2 extends Class1 implements Interface2 {public void method3 (int anInt) {system.out.println(anInt);} What method headings still need definition here?} List the headings of methods still required to be defined in Class2