B1. Answer the following questions: a. Given: class A { class Cextends B { public String toString() return "A object"; public String toString () { return "C object"; class B extends A public String toString() return "B object"; What is the output of executing the following Test program? [7 marks] public class Test { public static void main(String() arga){ Object x1 = new A(): System. out.println (x1. toString ()): Object x2 = new B(); System.out.println(x2. toString ()) : System.out.println(x3. tostring()); Object x3 = new C(); A a = new C(); Bb = new C(); System.out.println(h.tOString()): System.out.println(a.toString()); C C = new C(); System.out.println(c. tostring ()) ;

B1. Answer the following questions: a. Given: class A { class Cextends B { public String toString() return "A object"; public String toString () { return "C object"; class B extends A public String toString() return "B object"; What is the output of executing the following Test program? [7 marks] public class Test { public static void main(String() arga){ Object x1 = new A(): System. out.println (x1. toString ()): Object x2 = new B(); System.out.println(x2. toString ()) : System.out.println(x3. tostring()); Object x3 = new C(); A a = new C(); Bb = new C(); System.out.println(h.tOString()): System.out.println(a.toString()); C C = new C(); System.out.println(c. tostring ()) ;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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