public abstract class DebugBoat { String boatType = new String(); int passengers String power = new String(); public FebugBoat(String bt) { boatType = bt; } public boolean equals(otherBoat) { boolean result; if((passengers == otherBoat.passengers) && (power.equals(otherBoat.power))) result = true; else result = true; return result } public String toString() { return("This " + boatType + "boat carries " + passengers + " and is powered by + power); } public abstract void setPower(); public abstract void setPassengers(); } // Creates and displays an array of boats - // some are rowboats; some are ocean liners import java.util.*; public class DebugEleven4 { static Scanner input = new Scanner(System.in); static DebugBoat[] boatArray = new DebugBoat[5]; public static void main(String[] args) { buildArray; displayArray; } public static void buildArray() { char boatType; for(x = 0; x < boatArray.length; ++x) { boatType = getBoat(); if(boatType =='r') boatArray[x] = DebugRowboat(); else boatArray[x] = new DebugOceanLiner(); } } public static char getBoat() { String boatType; System.out.println("Enter r for rowboat; o for ocean liner "); boatType = input.next(); return boatType.charAt(0); } public static void displayArray() { for(int x = 0; x < boatArray.length) System.out.println("Boat #" + (x + 1) + " " + boatArray[x].toString()); } } public class DebugOceanLiner extends DebugBoat { public DebugOceanLiner() { super("ocean liner "); setPassengers(); } public void setPassengers() { super.passengers = 2400; } public void setPower() { superpower = "four engines"; } } public class DebugRowboat extends DebugBoat { public DebugRowboat() { super("row"); setPower(); } public void setPassengers() { super.passengers = 2; } public void setpower() { super.power = "oars"; } }

public abstract class DebugBoat { String boatType = new String(); int passengers String power = new String(); public FebugBoat(String bt) { boatType = bt; } public boolean equals(otherBoat) { boolean result; if((passengers == otherBoat.passengers) && (power.equals(otherBoat.power))) result = true; else result = true; return result } public String toString() { return("This " + boatType + "boat carries " + passengers + " and is powered by + power); } public abstract void setPower(); public abstract void setPassengers(); } // Creates and displays an array of boats - // some are rowboats; some are ocean liners import java.util.*; public class DebugEleven4 { static Scanner input = new Scanner(System.in); static DebugBoat[] boatArray = new DebugBoat[5]; public static void main(String[] args) { buildArray; displayArray; } public static void buildArray() { char boatType; for(x = 0; x < boatArray.length; ++x) { boatType = getBoat(); if(boatType =='r') boatArray[x] = DebugRowboat(); else boatArray[x] = new DebugOceanLiner(); } } public static char getBoat() { String boatType; System.out.println("Enter r for rowboat; o for ocean liner "); boatType = input.next(); return boatType.charAt(0); } public static void displayArray() { for(int x = 0; x < boatArray.length) System.out.println("Boat #" + (x + 1) + " " + boatArray[x].toString()); } } public class DebugOceanLiner extends DebugBoat { public DebugOceanLiner() { super("ocean liner "); setPassengers(); } public void setPassengers() { super.passengers = 2400; } public void setPower() { superpower = "four engines"; } } public class DebugRowboat extends DebugBoat { public DebugRowboat() { super("row"); setPower(); } public void setPassengers() { super.passengers = 2; } public void setpower() { super.power = "oars"; } }

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

See similar textbooks

Related questions

Question

This is a debugging question -

The files provided in the code editor to the right contain syntax and/or logic errors. In each case, determine and fix the problem, remove all syntax and coding errors, and run the program to ensure it works properly.

Code given -

public abstract class DebugBoat

{

String boatType = new String();

int passengers

String power = new String();

public FebugBoat(String bt)

{

boatType = bt;

}

public boolean equals(otherBoat)

{

boolean result;

if((passengers == otherBoat.passengers) && (power.equals(otherBoat.power)))

result = true;

else

result = true;

return result

}

public String toString()

{

return("This " + boatType + "boat carries " + passengers +

" and is powered by + power);

}

public abstract void setPower();

public abstract void setPassengers();

}

// Creates and displays an array of boats -

// some are rowboats; some are ocean liners

import java.util.*;

public class DebugEleven4

{

static Scanner input = new Scanner(System.in);

static DebugBoat[] boatArray = new DebugBoat[5];

public static void main(String[] args)

{

buildArray;

displayArray;

}

public static void buildArray()

{

char boatType;

for(x = 0; x < boatArray.length; ++x)

{

boatType = getBoat();

if(boatType =='r')

boatArray[x] = DebugRowboat();

else

boatArray[x] = new DebugOceanLiner();

}

public static char getBoat()

{

String boatType;

System.out.println("Enter r for rowboat; o for ocean liner ");

boatType = input.next();

return boatType.charAt(0);

}

public static void displayArray()

{

for(int x = 0; x < boatArray.length)

System.out.println("Boat #" + (x + 1) + " " +

boatArray[x].toString());

}

public class DebugOceanLiner extends DebugBoat

{

public DebugOceanLiner()

{

super("ocean liner ");

setPassengers();

}

public void setPassengers()

{

super.passengers = 2400;

}

public void setPower()

{

superpower = "four engines";

}

public class DebugRowboat extends DebugBoat

{

public DebugRowboat()

{

super("row");

setPower();

}

public void setPassengers()

{

super.passengers = 2;

}

public void setpower()

{

super.power = "oars";

}

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