Quotes from Cay S. Horstmann

A $100,000,000 venture capital fund was set up solely for products using a specific computer language.

place those files into a subdirectory of the directory containing the source file, named doc-files.

Use a static nested class when the instances of the nested class don't need to know to which instance of the enclosing class they belong. Use an inner class only if this information is important.

These actions are often called callbacks because some code gets called back when a user action occurs.