Beyond Java

Errata for Beyond Java

Submit your own errata for this product.


The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update



Version Location Description Submitted By Date Submitted Date Corrected
Printed
Page 4
First paragraph under Boiling Frogs

Boiling Frogs: The antecdote about boiling frogs isn't true. I like the metaphor, but we should clarify that it's a fable, or an urban myth. Change "You've doubtlessly heard that if..." to "You've doubtlessly heard the fable that if..."

Anonymous   
Printed
Page 17
Last paragraph, 5th sentence

"The code touches memory one byte beyond the from block." should be: "The code touches memory one byte before the to block."

Anonymous   
Printed
Page 19
2nd paragraph, 3rd sentence

"And it can never hold a string longer than six characters." should be: "And it can never hold a string longer than five characters."

Anonymous   
Printed
Page 59
line 6-7

Said another way, strong typing can be dynamic or weak => shoud read as Said another way, strong typing can be dynamic or static

Anonymous   
Printed
Page 60
1st paragraph

"In general, though, the dynamic programmers that I interviewed said static typing simply mauls productivity." should be: "In general, though, the dynamic language programmers that I interviewed said static typing simply mauls productivity."

Anonymous   
Printed
Page 61
6th line from the bottom

Incorrect. 100 will not cause an overflow. Change "if you need 100 iterations,..." to "if you need too many iterations, ..."

Anonymous   
Printed
Page 98
Under Looping

Change Many of Ruby's libraries... to Many of Ruby's libraries have methods that...

Anonymous   
Printed
Page 109
2nd Paragraph last sentence

"That may seem strange until you include the module in the Calculator class that we made before:" Should say "That may seem strange until you include the module in the Person class that we made before:"

Anonymous   
Printed
Page 113
Fourth paragraph

"The difference dependency..." should be: "The difference between dependency..."

Anonymous   
Printed
Page 127
2/3 of the way down

The use of Trails and Trail as a model is inconsistent. I want to clean that up now that I have better understanding. 1) On page 127, Strike the second code generation in the example that says" ruby script/generate model trails 2) Still page 127, near the bottom, make :trails singular. Strike the s on the end of trails. The example should be: class TrailsController < ApplicationController scaffold :trail end 3) At the top of page 127, change :trails to :trail. Should say: The first parameter is :trail, ... Now, we're going to do the same with locations. 4) Middle of page 128, change the scaffolding in the third text paragraph to be script/generate scaffold location locations. The sentence should say: ..., complete with scaffolding with ruby script/generate scaffold location locations. 5) Change the scaffolding line in trails also, to be script/generate scaffold trail trails. New sentence should be: ..., do the same for Trail with ruby script/generate scaffold trail trails. 6) Bottom of page 128. Change the class names to be singular. Change the class names in the last programming example on the page to singulars: class Trail < ActiveRecord::Base belongs_to :location end class Location < ActiveRecord::Base has_many :trails end 7) Before the sentence "You also need to tell Rails about... add the sentence "If you have any trails in your database, delete them, or add a valid location_id."

Anonymous   
Printed
Page 127
Last paragraph, 1st sentence

"Point your browser to the URL http://localhost:3000/trail." should be: "Point your browser to the URL http://localhost:3000/trails."

Anonymous   
Printed
Page 130
Code of edit.rhtml

<input id="trial_id" name="trail[id]" size="20" type="hidden" value="<%= @recipe.id %>" /> should be: <input id="trail_id" name="trail[id]" size="20" type="hidden" value="<%= @trail.id %>" /> - trial_id should be trail_id - @recipe.id should be @trail.id

Anonymous   
Printed
Page 145
5th Bullet Point

This refers to lines of code that don't exist in the code sample on the previous page. There are only 13 LOC in the example, but the bullet refers to lines 14 and 15. It Should be 11 and 13 not 13 and 15.

Anonymous   
Printed
Page 152
Fourth paragraph, immediately after age example

Incorrect wording. Change Then, it sends the ifFalse: method to the (age > 16) expression. The first code block is a parameter for ifFalse, and gets called if the expression evaluates to false. to This bit of code sends the binary ifFalse: ifTrue: message to the boolean returned by the expression (age > 16). Both ifFalse: and ifTrue: take a code block as a parameter.

Anonymous   
Printed
Page 170
Last paragraph

"It's not likely that the CLR will ever run as well on other platforms as it does on say, Linux." should be: "It's not likely that the CLR will ever run as well on other platforms as it does on Windows."

Anonymous   
Printed
Page 174
Next to last paragraph

"Gossling" should be "Gosling"

Anonymous