5. In the following main( ), identify the valid or invalid statements. If invalid, tell why. public class TestMain } public static void main(String[] args) } Car myCarl, myCar2; ElectricCar myElec1, myElec%; myCarl = new Car(O; myCar2 = new Car(“Ford", 1200, “Green"); myElec1 = new ElectricCar( ); myElec2 = new ElectricCar(15);. 4. 3. Consider the following class definitions: public class Car } public String make%; protected int weight; private String color; private Car(String make, int weight, String color) } this.make make; weight; color; this.weight this.color { public Car( ) } this("unknown", -1, "white"); { public class ElectricCar extends Car } private int rechargeHour; public ElectricCar( ) } this(10); { private ElectricCar(int charge) } super(); rechargeHour charge; CONTINUED TO THE NEXT PAGE

5. In the following main( ), identify the valid or invalid statements. If invalid, tell why. public class TestMain } public static void main(String[] args) } Car myCarl, myCar2; ElectricCar myElec1, myElec%; myCarl = new Car(O; myCar2 = new Car(“Ford", 1200, “Green"); myElec1 = new ElectricCar( ); myElec2 = new ElectricCar(15);. 4. 3. Consider the following class definitions: public class Car } public String make%; protected int weight; private String color; private Car(String make, int weight, String color) } this.make make; weight; color; this.weight this.color { public Car( ) } this("unknown", -1, "white"); { public class ElectricCar extends Car } private int rechargeHour; public ElectricCar( ) } this(10); { private ElectricCar(int charge) } super(); rechargeHour charge; CONTINUED TO THE NEXT PAGE

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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