Errata

because the basic class of Throwable extends ...
"extends" should be "implements".

Note from the Author or Editor:
This is correct; please change
...because the basic class of Throwable extends the Serializable interface...

to

...because the basic class of Throwable implements the Serializable interface...

"... as part of the signature of that exception", "exception" should be "method".

Note from the Author or Editor:
this is correct; please change the line from
...to be declared as part of the signature of that exception.

to

...to be declared as part of the signature of that method.

"... the exception must deal with the exception", the first "exception" should be "method".

Note from the Author or Editor:
This is correct; please change the line

so the compiler can enforce the rule that any method calling the exception must deal with the exception.

to

so the compiler can enforce the rule that any method calling the method must deal with the exception.

"foo->bar" should be "fooptr->bar".

Note from the Author or Editor:
this is correct; please change the instance of foo->bar in the third paragraph to fooptr->bar (in the code font)

"Chapter 7" should be "Chapter 8".

Note from the Author or Editor:
This is correct (although it occurs on page 58); please change the last number in the first paragraph from "7" to "8"

In text you explain that you don't have a readIn.close(); in the constructor but only in the finalize method. But in the example code you have a readIn.close(); right after the object has been read.

Note from the Author or Editor:
The line
readIn.close();
in the try block of the constructor should be removed.

"... returned from the hasNext() method ...", "hasNext()" should be "next()"

Note from the Author or Editor:
This is correct, please change the instance of
hasNext()
in line 4 of the paragraph to
next()

"We start by creating a TreeSort object ...", "TreeSort" should be "TreeSet".

Note from the Author or Editor:
This is correct, please change "TreeSort" to "TreeSet"

"... and the method finishes.", should it not be "the thread finishes"? Note that there is already a "Once the method is finished" in this sentence before.

Note from the Author or Editor:
There is an error here, but not the one indicated. However, the phrasing is confusing. So please change the seventh line in the first paragraph from

...the boolean isDone is set to true and the method finishes.

to

...the boolean done is set to true and the method (and the thread) finishes.

Note that "boolean done" should be in the code font.

Source code is wrong. The text and comment for the JUnit test method say it will increment the number of at-bats by 10 to "ensure that each test case has the minimum number of at-bats." This line:

numbats++;

Should probably be:

numbats += 10;

Note from the Author or Editor:
This is an error; the suggested fix is fine; please change the example code line reading
numbats++;
to
numbats += 10;

"HashTable" should be "Hashtable".

Note from the Author or Editor:
This is correct; the word "HashTable" in the fifth line of the first paragraph should be "Hashtable"