Our code for finding roots by Newton's method has a single class. The program begins with
class Newton {
and ends with the closing brace } at the end of the file.
All class declarations starts with class
classname { and end with a },
where classname is the name of the class.
The curly braces enclose the "subroutines" and variables associated with
a class. If you look at the example code, you will find inside the
Newton class, there are three "subroutines": main, f
and fprime.
Finally, a note about file conventions. Each java code file, such as
Newton.java, must have a class in it with the same name
as the file. For example, our program with the class Newton
should be saved in a file called Newton.java.
Next we examine the contents of the Newton class.
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5.6 Methods: Functions and Subroutines in Java |
David Maxwell,
who is still writing this, would like to
hear your comments and suggestions.