some time ago to see "Data Access Patterns" and found there are many code entry errors, see china-pub, in a review, we also complain about the content better storytellers is the correction of reading too badly affected the mood slightly dumb recently, I put the first chapter of "data access device "The code was sorted out, with useful friends can be directly used.

Data
....\.classpath
....\.project
....\com
....\...\cbf107
....\...\......\www
....\...\......\...\ConcreteDataAccessor.class
....\...\......\...\ConcreteDataAccessor.java
....\...\......\...\Conn.class
....\...\......\...\Conn.java
....\...\......\...\DataAccessor.class
....\...\......\...\DataAccessor.java
....\...\......\...\DataException.class
....\...\......\...\DataException.java
....\...\......\...\Row.class
....\...\......\...\Row.java
....\Model Folder
....\............\com
....\............\...\cbf107
....\............\...\......\default.txvpck
....\............\...\......\www
....\............\...\......\...\default.txvpck
....\............\...\default.txvpck
....\............\default.txvpck

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