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By Kingston J.H. (ed.)

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Just memorizing magical incantations is never satisfying, especially for computer scientists who like to know everything that is going on in their programs. But this is a place where Java shows its ugly side, and you’ll just have to live with it. New programmers, like new drivers, must learn to use something complex without fully understanding how it works. Fortunately, by the time you finish this book, you’ll understand every part of the incantation. Notice that the main method has a set of curly braces of its own.

Notice that the output cursor is at the end of this line and that it appears after a space. The reason is that the command was a print (don’t go to a new line) and the string literal in the print ended with a space. Java will not insert a space for you unless you specifically request it. After the next print, the line looks like this: To be or not to be. ^ There’s no space at the end now because the string literal in the second print command ends in a period, not a space. That is ^ There is no space between the period and the word “That” because there was no space in the print commands, but there is a space at the end of the string literal in the third statement.

This is like reaching 99 in base-10. Again, you carry over to the next digit to form the three-digit number 100. In binary, whenever you see a series of ones, such as 111111, you know you’re just one away from the digits all flipping to 0s with a 1 added in front, the same way that, in base-10, when you see a number like 999999, you know that you are one away from all those digits turning to 0s with a 1 added in front. 1 shows how to count up to the base-10 number 8 using binary. 1 Decimal vs. Binary Decimal Binary 0 1 2 3 4 5 6 7 8 0 1 10 11 100 101 110 111 1000 We can make several useful observations about binary numbers.

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