In the following main( ), identify the valid or invalid statements. If invalid, tell why. Public classTestMain {     public static void main(String [ ] args)     {          Car myCar1, myCar2;          Electric Car myElec1, myElec2;          myCar1 = new Car( );          myCar2 = new Car("Ford", 1200, "Green");          myElec1 = new ElectricCar( );          myElec2 = new ElectricCar(15);          } }

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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In the following main( ), identify the valid or invalid statements. If invalid, tell why.

Public classTestMain

{

    public static void main(String [ ] args)

    {

         Car myCar1, myCar2;

         Electric Car myElec1, myElec2;

         myCar1 = new Car( );

         myCar2 = new Car("Ford", 1200, "Green");

         myElec1 = new ElectricCar( );

         myElec2 = new ElectricCar(15);

         }

}

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;
this.weight = weight;
color;
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;
}
Transcribed Image Text: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; this.weight = weight; color; 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; }
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