Java™ How To Program (Early Objects), Tenth Edition

Method maximum

Consider maximum’s declaration (lines 28–41). Line 28 indicates that it returns a double value, that the method’s name is maximum and that the method requires three double parameters (x, y and z) to accomplish its task. Multiple parameters are specified as a comma-separated list. When maximum is called from line 21, the parameters x, y and z are initialized with copies of the values of arguments number1, number2 and number3, respectively. There must be one argument in the method call for each parameter in the method declaration. Also, each argument must be consistent with the type of the corresponding parameter. For example, a parameter of type double can receive values like 7.35, 22 or -0.03456, but not Strings like "hello" ...