How many frameworks available in Java?

How many frameworks available in Java? Which are most commonly used?
Edited by: Passion on Jun 16, 2008 2:50 AM

the number of available frameworks is a function of time, climbing asymptotically to a number n where n is larger than 0 and probably smaller than infinity.
The value of n is an unknown, and possibly cannot be known at any time Java is in active use.

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How many classes should a .java file contain?

Are there any general guidelines on how many Java classes should be contained in a single .java file? I've been creating a new .java file for each class I write but see examples in Sun's Java tutorial where there are at least two classes in a single .java file. One such case is the TableDemo example at
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superstar wrote:
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grins
As many as are derived from the Component-Class plus 1 (for the Component-Class itself)?
Would you like to know the total number of classes or the number of instances of the classes? :)
greetings Marsian

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cat /etc/oratab
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How many frameworks available in Java?

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