Question

The files provided 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.

3.

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();

}

// Two boats should be equal

// if they hold the same number of passengers

// and also have the same power source

public class DebugEleven3

{

   public static void Main(String args[])

   {

      DebugRowboat redBoat = new DebugRowboat();

      DebugRowboat blueBoat = new DebugRowboat();

      System.out.print("The two boats are");

      if(redBoat = blueBoat)

         System.out.println(" equal");

      else

     (" not equal");

   }

}

public class DebugRowboat extends DebugBoat

{

   public DebugRowboat()

   {

      super("row");

      setPower();

   }

   public void setPassengers()

   {

      super.passengers = 2;

   }

   public void setpower()

   {

      super.power = "oars";

   }

}

4.

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";

   }

}

Answer 1

3.CODE:

abstract class DebugBoat

{

   String boatType = new String();

   int passengers;

   String power = new String();

   public DebugBoat(String bt)

   {

      boatType = bt;

   }

   public boolean equals(DebugBoat 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();

}

// Two boats should be equal

// if they hold the same number of passengers

// and also have the same power source

public class DebugEleven3

{

   public static void main(String args[])

   {

      DebugRowboat redBoat = new DebugRowboat();

      DebugRowboat blueBoat = new DebugRowboat();

      System.out.print("The two boats are");

   if(redBoat.equals(blueBoat))

         System.out.println(" equal");

      else

        System.out.println(" not equal");

   }

}

class DebugRowboat extends DebugBoat

{

   public DebugRowboat()

   {

      super("row");

      setPower();

   }

   public void setPassengers()

   {

      super.passengers = 2;

   }

   public void setPower()

   {

      super.power = "oars";

   }

}

4. CODE:

import java.util.*;
abstract class DebugBoat

{

   String boatType = new String();

   int passengers;

   String power = new String();

   public DebugBoat(String bt)

   {

      boatType = bt;

   }

   public boolean equals(DebugBoat 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

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

     {

        boatType = getBoat();

        if(boatType =='r')

         boatArray[x] = new 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; x++)

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

         boatArray[x].toString());

   }

}

class DebugOceanLiner extends DebugBoat

{

   public DebugOceanLiner()

   {

      super("ocean liner ");

      setPassengers();

}

   public void setPassengers()

   {

      super.passengers = 2400;

   }

   public void setPower()

   {

      super.power = "four engines";

   }

}

class DebugRowboat extends DebugBoat

{

   public DebugRowboat()

   {

      super("row");

      setPower();
      setPassengers();
   }

   public void setPassengers()

   {

      super.passengers = 2;

   }

   public void setPower()

   {

      super.power = "oars";

   }

}