Sybex OCP Java 8 Study Guide: Comparable errata

[Mike Constantin]

Hi,

I believe there is an error in chapter 3, section Comparable regarding the package:

1.

import java.util.*;
public class Duck implements Comparable<Duck> {

2.

public class LegacyDuck implements java.util.Comparable {
   private String name;
   public int compareTo(Object obj) {
      LegacyDuck d = (LegacyDuck) obj;    // cast because no generics
      return name.compareTo(d.name);
   }
}

3.
You might have noticed by now that we have been writing java.util.Comparable. That’s because it is in the java.util package

Comparable is in java.lang, not in java.util; as the book points out in the summary table a little later.

[Paweł Baczyński]

Good catch!
Have a cow for reporting this :-)

Also, remember to UseCodeTags (this is a link) when postiong code. I have added them for you this time.
Doesn't it look better.

[Mike Constantin]

Thanks!

[Jeanne Boyarsky]

Mike,
Confirmed and added to the errata crediting you. Thanks!

The LegacyDuck also says "quack!" as a thank you .