October 2017
Beginner
318 pages
7h 26m
English
Content preview from Java Programming for Beginners
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The double data type
Let's quickly talk about the double data type. It is a sister type of float. It provides a greater resolution: double numbers can have even more decimal places. But they take up a little more memory. At this point in time, using double or float is almost always a style or personal preference decision. Unless you're working with complicated software that must run at peak memory efficiency, the extra memory space taken up by a double is not very significant.
To illustrate how double works, let's change the two integer numbers in our FloatingPointNumbers.java program to a double data type. When we only change the names of the variables, the logic of our program doesn't change at all. But when we change the declaration of ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.