content: My knowledge of Oracle and Java is beginner/intermediate level and I like this book a lot.The book explains how SQLJ relates to SQL, PL/SQL, Java, JDBC and it provides a good introduction to the JDeveloper IDE (Integrated Development Environment).The book is written very clearly and the appearance and organization of the text is well up to the O'Reilly standard.I can't comment on the worked examples yet as I have not yet tried them out.