interfaces

[xxbabysue123xx]

hi i need help with this question

Assume a class BooList implements Comparable. Write an comesAfter method that returns the "larger" of the object or parameter, as determined by using implementation of Comparable.

//i dont know if i did this right...
public int comesAfter (String x, String y)
{
if (x.compareTo(y)>0)
return x;
else
return y;
}

[Ganon11]

The method should be comparing two BooList objects - the current object and one passed as a parameter - but you are comparing two Strings.

Other than this, it looks right.

[r035198x]

hi i need help with this question

Assume a class BooList implements Comparable. Write an comesAfter method that returns the "larger" of the object or parameter, as determined by using implementation of Comparable.

//i dont know if i did this right...
public int comesAfter (String x, String y)
{
if (x.compareTo(y)>0)
return x;
else
return y;
}

Yes you should be comparing objects of type BooList not String. You should also return 0 if the objects are equals according to the compareTo method.

[Ganon11]

You should also return 0 if the objects are equals according to the compareTo method.

I don't think so. He's writing a comesAfter method, not compareTo. He should be returning the object which is larger, so if they are equal, I imagine he could return either. There should be no integer returned.

[r035198x]

I don't think so. He's writing a comesAfter method, not compareTo. He should be returning the object which is larger, so if they are equal, I imagine he could return either. There should be no integer returned.

Indeed. Nice spot Ganon. He should rather be returning either of the objects if they are equal like you said.