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The Wrong Answers
Posted by evanx on October 30, 2006 at 01:04 PM | Comments (4)
Frank Somerville posted "My Favorite Java Developer interview questions" which i enjoyed reading a minute ago. Here are some answers to avoid ;)
Q. When does the JVM do Garbage Collection?
I got no idea. Who's JVM, is he the janitor here?
Q. What's the difference between an interface and an abstract class?
An abstract class is um, a class that is abstract. An interface is just an interface.
Q. Name the different types of JDBC drivers?
MySQL, PostgreSQL, SQLServer... You want all of them?!
Q. How do I find out how many rows there are in a ResultSet?
Easy. resultSet.length(). No hang on, actually it might be
resultSet.length.
Q. Does Java use pass-by-value or pass-by-reference semantics?
For what, an int or a String?
Q. What does "NULL" mean in SQL?
Ok, this must be a trick question. If it's not null, um... zero!?
Pick one and answer it, correctly or incorrectly :) Any other good questions?
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Comments
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Q. Name the different types of JDBC drivers?
A. Are you talking about Formula 1 or NASCAR?
Posted by: kirillcool on October 30, 2006 at 04:27 PM
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haha, good one, kirill! :) Or "I don't follow motorsport anymore." hee hee
Posted by: evanx on October 30, 2006 at 05:04 PM
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Q. Name the different types of JDBC drivers?
MySQL, PostgreSQL, SQLServer... You want all of them?!
Honestly 99% of developers have no need to be able to list these off. The details of the actual driver you are using is more important than its theoretical type.
Posted by: applebanana8 on November 02, 2006 at 09:21 AM
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applebanana, you make a very good point! ;)
Posted by: evanx on November 02, 2006 at 12:15 PM
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