A method may declare to throw multiple exceptions. (True/False) abstract class E

Question

A method may declare to throw multiple exceptions. (True/False) abstract class E can have regular methods. (True/False) public abstract int p() {return x}; The statement has syntax errors. (True/False) An interface may contain constructors. (True/False) In java, a class can extend more than one class. Abstract and Interface. Given the following Java statement, class A {} interface B {} interface D {} abstract class E {} Please indicate if the following Java statements has syntax error. (Yes/No) class X extends A, E {} (Yes/No) class X extends E implements D {} (Yes/No) interface Y implements A {} (Yes/No) class X implements B, D {} (Yes/No) class X implements E implements D {} Please select True or False for the following questions. class Person5 {String name="Unknown";} class Faculty5 extends Persons implements fun {public void p(String n) {super.name=n;}} interface fun {public void p(String n);} public class Test {public static void main(String [] args) {Persons p=new Persons5 (); Faculty5 f = new Faculty5(); f .p("Mary"); System.out.println(p instanceof Faculty5);//System.out.println(p instance of fun);//System.out.println(f instanceof Persons);//System.out.println(f instanceof fun);//System.out.println(p.name);//System.out.println(f.name);//}}

Explanation / Answer

Answers

3)
   1.True
   2.True
   3.True
   4.False
   5.False

4)
   1.yes   class X extends A,E
   2.no   class X extends E implements D
   3.yes   interface Y implemnets A
   4.no   class X implements B,D
   5.yes   class X implements E implements D

5)
   System.out.println("p instance of faculty5");   //false
   System.out.println("p instance of fun");   //false
   System.out.println("f instance of person5");   //true
   System.out.println("f instance of fun");   //true
   System.out.println(p.name);   //true   prints Unkown
   System.out.println(f.name);   //true    prints Mary

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