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The animals on the cover of Java Programming with Oracle JDBC are hummingbird moths. As its name suggests, this moth looks much like a hummingbird at a glance. It feeds by hovering in front of a flower and sipping nectar through its proboscis (its feeding structure) in much the same way as the hummingbird. However, at a closer look, the insect’s antennae mark it as a moth. Belonging to the family Sphingidae, this moth is commonly called “hummingbird,” “sphinx,” or “hawk moth.”

The hummingbird moth is a strong flyer, with a rapid wingbeat. Most are medium to large moths with heavy bodies, with wing spreads up to five inches. Although few are active in the daytime, most fly on cloudy days or at dusk. Though most don’t cause damage to garden plants, some feed on tomatoes and tobacco when in caterpillar form. The tomato hornworm, for example, feeds on potato, tomato, and tobacco plants, and can cause severe economic loss in those crops. Leaves provide an additional source of food for the moth.

Matt Hutchinson was the production editor and copyeditor for Java Programming with Oracle JDBC. Leanne Soylemez and Rachel Wheeler provided quality control. Joe Wizda wrote the index. Edie Shapiro provided production assistance.

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