data structures

From:
periklis.ioannou@gmail.com
Newsgroups:
comp.lang.java.programmer
Date:
15 Dec 2006 14:57:53 -0800
Message-ID:
<1166223473.573213.143390@79g2000cws.googlegroups.com>
Hi all,

i have an old exam question that i am just looking at and unfortunately
i have typed into the compiler and it won't compile. There are to many
bugs in the program a good friend of mine told me. I merely interested
to know, what will be printed out and the intentions of the examiner
for this question. I personally think that both statements will
printout, but without it compiling it hard to tell. The second
statement been the color one because it is incrementing! Am i right?

Cheers,

Peri.

Please assume getters and setters methods exist.Here is the classes,
and the harness class:

import java.awt.*;
import java.applet.*;

public class LaundryItem
 {

    protected String washingInstructions;
    protected Color colour;

    public LaundryItem(String w, Color c)
    {

    System.out.println("Yay, something to wash!!!");
    washingInstructions=w;
    colour=c;
    }

            .........

    public String toString()
    {
        return getWashingInstructions() + "\n" +
            getColour().toString(); //The assumed getter methods
    }

}

/---------------------------------------------------------------------------------------------------------------------------------/

public class WashingMachine
{
protected LaundryItem[] contents;
protected int counter=0;

public WashingMachine()
{
    contents=new LaundryItem[10];
}

public void add(LaundryItem i)
{
    contents[counter]=i;
    counter++;
}

public String toString()
{
    String result= "";

    for(int c=0;c<counter; c++)

    {
        result = result + contents[c].toString() + "\n";

    }

    return result;

}

}

/-----------------------------------------------------------------------------------------------------------------------------/

public class Question1A
{
    public static void main(String[] args)
    {
        WashingMachine x=new WashingMachine();
        LaundryItem i= new LaundryItem("dry clean only");

        x.add(i);
        x.add(i);
        System.out.println(x.toString());
    }

}

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