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12 Part I: Getting Started When you start dealing efficiently with ideas, something very nice happens. Suddenly, all the overhead is gone. Instead of pushing paper and trees, you re pushing numbers and concepts. Without the overhead, you can do things much faster, and do things that are far more complex than ever before. What You Can Do with Java It would be so nice if all this complexity was free, but unfortunately, it isn t. Someone has to think hard and decide exactly what the computer will be asked to do. After that thinking is done, someone has to write a set of instructions for the computer to follow. Given the current state of affairs, you can t write these instructions in English or any other language that people speak. Science fiction is filled with stories about people who say simple things to robots and get back disastrous, unexpected results. English and other such languages are unsuitable for communication with computers for several reasons: An English sentence can be misinterpreted. Chew one tablet three times a day until finished. It s difficult to weave a very complicated command in English. Join flange A to protuberance B, making sure to connect only the outermost lip of flange A to the larger end of the protuberance B, while joining the middle and inner lips of flange A to grommet C. An English sentence has lots of extra baggage. Sentence has unneeded words. English is difficult to interpret. As part of this Publishing Agreement between John Wiley & Sons, Inc. ( Wiley ) and the Author ( Barry Burd ), Wiley shall pay the sum of one-thousand-two-hundred-fifty-seven dollars and sixty-three cents ($1,257.63) to the Author for partial submittal of Java For Dummies, 4th Edition ( the Work ). To tell a computer what to do, you have to speak a special language and write terse, unambiguous instructions in that language. A special language of this kind is called a computer programming language. A set of instructions written in such a language is called a program. When they re looked at as a big blob, these instructions are called software or code. Here s what code looks like when it s written in Java: import static java.lang.System.out; class PayBarry {
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