原版书书名：Learning Java, 4th Edition
The animals on the cover of Learning Java, Fourth Edition are a Bengal tigress and hercubs. The Bengal tiger (Panthera tigris) lives in Southern Asia. It has been hunted practicallyto extinction, principally for its bone, which is reputed to have medicinal value.It now lives mostly in natural preserves and national parks, where it is strictly protected.It’s estimated that there are fewer than 3,000 Bengal tigers left in the wild.
The Bengal tiger is reddish orange with narrow black, gray, or brown stripes, generallyin a vertical direction. Males can grow to nine feet long and weigh as much as 500pounds; they are the largest existing members of the cat family. Preferred habitats includedense thickets, long grass, or tamarisk shrubs along river banks. Maximum longevitycan be 26 years but is usually only about 15 years in the wild.
Tigers most commonly conceive after the monsoon rains; the majority of cubs are bornbetween February and May after a gestation of three and a half months. Females bearsingle litters every two to three years. Cubs weigh under three pounds at birth and arestriped. Litters consist of one to four cubs, with occasionally as many as six, but it’sunusual for more than two or three to survive. Cubs are weaned at four to six monthsbut depend on their mother for food and protection for another two years. Female tigersare mature at three to four years, males at four to five years.
Their white ear spots may help mothers and cubs to keep track of each other in the dimforests at night.