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page 551 of the HF EJB

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TransactionRequiredException and TransactionRolledbackException are in the javax.transaction package. In the book it says they are from package - javax.ejb

I have found so many errors in this book. Not very sure how much I can rely on the information from this book?
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Its rather usual to find errors in books. I have yet to come across any book that has no mistakes/typos. Don't be discouraged, it shows that you're reading carefully & most importantly, you know your stuffs.

So instead of getting disappointed/angry/discouraged with errors that you found in the book, post it here & share it with us. There're a couple more of free resources such as the API & EJB specifications that you could use together with the HFEJB for your preparations.
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Always, always, always look up the errata for any technical book you read and mark up your book with the corrections.

Head First EJB errata

The unconfirmed errata list includes:
[551] remote client will get these (checked);
TransactionRolledBackException and TransactionRequiredException are in
javax.transaction, NOT javax.ejb, only their Local counter parts come from javax.ejb
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
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