Errata

Ant isn't "a Java servlet engine". The text from the next bullet got copied into this
one.

Should be "to" instead of "the" in "which tell it whether the emphasize quick start-
up time".

The error is not in the text, but on the accompanying CD. For chapter 2 in the
exercises, the HelloJava.java example, the CD has several implmentations of the
Hello, Java program. The first 3 are supposed to be commented out using a "C style"
multiline comment. It should start with a "/*" and instead it starts with a "*/"
which causes numerous compiler errors. Reverse the order and it compiles fine with
javac version 1.4.

This is confusing since it is the first example in the book.

The titlebar shows "HelloJava1", when the accompanying program sets it to "Hello
Java!". Meanwhile (and now I'm being really picky!), the label shows "Hello, Java!"
while the program does not include the comma.

Do not place the class HelloComponent its own file, only mention it is possible.
Remove the word public from the class declarations on page 35 and page 38. When the
class is declared in the same file public is not allowed.

In Figure 2-2, the HelloJava2 class under the JComponent class should be replaced by
HelloComponet class.

The words "JComponent" and "and" are sticked together. The first line
"The JButton class is also derived from JComponentand therefore..."
should be replaced with:
"The JButton class is also derived from JComponent and therefore..."

It should be "HelloComponent3" instead of "HelloJava3" in "the add() method that
HelloJava3 inherits from Container".

The same could be said for the all the other mentions of HelloJava3 in the 1st and
2nd paragraphs on this page. (Though I suppose you could also argue that "the
HelloJava3 container" is HelloComponent3, and that there is no error.)

Reference should be to chapter 4 instead of chapter 5.

"It loads Java class files and interprets the compiled String." & "... the
interpreter also serves as a specialized compiler that turns Java String into native
machine instructions." In both sentences, "String" should be "byte code".

Again "code" or "byte code" has been replaced by "String" in "...a compiled class
that contains Java virtual machine String."

"Try" should be "try"

The variable "bar" should be in monospaced font in "...if an error had occurred in
the try clause we wouldn't have reached the bar assignment."

Semicolon used instead of comma in "As you'll see in Chapter 6 when we talk about
subclassing; there's more to learn about how methods see variables."

And it should be "aspects" instead of "aspect" in "Both aspect differ from static
methods..."

The variable "time" should be in the monospaced font in "Here we have implemented the
default constructor so that it sets the instance variable time by calling a
hypothetical method..."

The semi-colon is badly typeset in "That is why static methods are called
"static";they are always bound at compile time." I'm not sure if your style calls for
semi-colons to be inside the quotes, but in any case there should be a space in
there.

There is an incorrect comma after "subclass" in "Even if we create an instance of a
subclass, our code has never seen before (perhaps a new object type loaded from the
network), any overriding methods that it contains are located and used at runtime,
replacing those that existed when we last compiled our code."

Should be "event" instead of "even" in "...in which listener objects register with
even sources."

Missing space between "javap" and "utility" in "Now take a look at it with the SDK's
javaputility..."

Extra "a" before "such" in "when you're invoking a such a utility, you need to
specify these files explicitly or use a wildcard that finds them."

The method "waiterMethod()" is referred to as "waiter-Method()". There should be no
"-" in the name.

The addElement() method should be changed to add() method to be consistent with the
previous block of code, and also because the List interface does not declare the
addElement() method.

The first sentence of the paragraph said that:

"Buffer is a subclass of java.nio.Buffer object."

should be changed to reflect the nature of the java.nio.Buffer class. For example:

"The Buffer class in the java.nio package is the superclass for all buffer classes."

or something similar to.

CharBuffer cbuf = CharByffer.allocate( 64*1024 );
should read
CharBuffer cbuf = CharBuffer.allocate( 64*1024 );

similarly
ByteBuffer bbuf = ByteByffer.allocateDirect( 64*1024 );
should read
ByteBuffer bbuf = ByteBuffer.allocateDirect( 64*1024 );

The first line of the CryptURLConnection.java example code needs to be...
package learningjava.protocolhandlers.crypt;
...The authors talk about including it in the URLStreamHandler.java file from the
page before, but then define it as a separate file. Without adding it to the package
the compiler can't find it. Even if you import the classes from the excersize, it
still really should be part of the crypt package. The author may want to comment on
this?

The version of setURL used in the Handler class is depreciated. The compiler for 1.4
spits out

Handler.java:13: warning:
setURL(java.net.URL,java.lang.String,java.lang.String,int,java.lang.String,java.lang.String)
in java.net.URLStreamHandler has been deprecated

java.sun.com...
Use setURL(URL, String, String, int, String, String, String, String)