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Showing posts from January, 2008

Sun To acquire MySQL

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Sun Microsystems is going to jump in the database market with the purchase of most successful open source database developer MySQL for $1 billion. This is the main center of attraction on both the websites:
















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With the move, announced Wednesday, Sun takes a big leap into the $15 billion database market and pits it against the likes of Microsoft, IBM and Oracle. MySQL have clients Facebook, Google, Nokia and Baidu as customers.

What makes MySQL interesting to Sun. About 20 percent of MySQL deployments run on Solaris, according to Sun estimates outlined on a conference call. Seventy five percent of MySQL deployments are not on Sun hardware. That gives Sun an opportunity to bundle hardware software and services.

While Sun can also distribute MySQL through its channel and OEM partnerships and create various bundles. The overarching goal is to give MySQL more “commercial appeal” and boost adoption of open source software in the enterprise.
One big question is what Sun does next to build out…

Three Rules for Effective Exception Handling

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Exceptions in Java provide a consistent mechanism for identifying and responding to error conditions. Effective exception handling will make your programs more robust and easier to debug. Exceptions are a tremendous debugging aid because they help answer these three questions:

• What went wrong?
• Where did it go wrong?
• Why did it go wrong?

When exceptions are used effectively, what is answered by the type of exception thrown, where is answered by the exception stack trace, and why is answered by the exception message. If you find your exceptions aren't answering all three questions, chances are they aren't being used effectively. Three rules will help you make the best use of exceptions when debugging your programs.

These rules are: be specific, throw early, and catch late.

To illustrate these rules of effective exception handling, this article discusses a fictional personal finance manager called JCheckbook. JCheckbook can be used to record and track bank account activity, such …