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Numbers (The Java™ Tutorials > Learning the Java Language > Numbers and Strings)
Trail: Learning the Java Language
Lesson: Numbers and Strings
Numbers and Strings
Numbers
The Numbers Classes
Formatting Numeric Print Output
Beyond Basic Arithmetic
Summary of Numbers
Questions and Exercises
Characters
Strings
Converting Between Numbers and Strings
Manipulating Characters in a String
Comparing Strings and Portions of Strings
The StringBuilder Class
Summary of Characters and Strings
Questions and Exercises
Home Page > Learning the Java Language > Numbers and Strings
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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.

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