For this question, use the class shown below: public abstract class vehicle { protected double speedMPH; protected double hoursTraveled; } abstract boolean travel (double time); public double getDistanceTraveled() { return speed * hours Traveled; } Define a subclass of the Vehicle class called Train. Train needs to contain the following members: • A new variable called maxCargo, an integer representing the tonnage the train is capable of carrying. • A constructor that takes two parameters, speed and cargoLimit, and sets the speedMPH and maxCargo variables accordingly (hoursTraveled should be set to 0). • A constructor that takes no parameters. In this constructor, set speedMPH to 30, maxCargo to 50, and hoursTraveled to 0. Override the travel method to represent the time the train spends

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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JAVA:

 

For this question, use the class shown below:
public abstract class Vehicle {
protected double speedMPH;
protected double hoursTraveled;
}
abstract boolean travel (double time);
public double getDistanceTraveled() {
return speed hours Traveled;
}
Define a subclass of the Vehicle class called Train. Train needs to contain the
following members:
• A new variable called maxCargo, an integer representing the tonnage the
train is capable of carrying.
• A constructor that takes two parameters, speed and cargoLimit, and sets
the speedMPH and maxCargo variables accordingly (hoursTraveled
should be set to 0).
• A constructor that takes no parameters. In this constructor, set
speedMPH to 30, maxCargo to 50, and hoursTraveled to 0.
Override the travel method to represent the time the train spends
travelling. If the time parameter is positive, it should be added to the
hoursTraveled variable and then the method should return true. If time is
negative, return false without modifying hoursTraveled.
Transcribed Image Text:For this question, use the class shown below: public abstract class Vehicle { protected double speedMPH; protected double hoursTraveled; } abstract boolean travel (double time); public double getDistanceTraveled() { return speed hours Traveled; } Define a subclass of the Vehicle class called Train. Train needs to contain the following members: • A new variable called maxCargo, an integer representing the tonnage the train is capable of carrying. • A constructor that takes two parameters, speed and cargoLimit, and sets the speedMPH and maxCargo variables accordingly (hoursTraveled should be set to 0). • A constructor that takes no parameters. In this constructor, set speedMPH to 30, maxCargo to 50, and hoursTraveled to 0. Override the travel method to represent the time the train spends travelling. If the time parameter is positive, it should be added to the hoursTraveled variable and then the method should return true. If time is negative, return false without modifying hoursTraveled.
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