Numbers
This section begins with a discussion of the Number
class in the java.lang
package, its subclasses, and the situations where you would use instantiations of these classes rather than the primitive number types.
This section also presents the PrintStream
and DecimalFormat
classes, which provide methods for writing formatted numerical output.
Finally, the Math
class in java.lang
is discussed. It contains mathematical functions to complement the operators built into the language. This class has methods for the trigonometric functions, exponential functions, and so forth.