Chapter: Java The Complete Reference - The Java Library - java.util : More Utility Classes

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java.util : More Utility Classes

This chapter continues our discussion of java.util by examining those classes and interfaces that are not part of the Collections Framework.

Chapter 19

java.util Part 2: More Utility Classes

 

This chapter continues our discussion of java.util by examining those classes and interfaces that are not part of the Collections Framework. These include classes that tokenize strings, work with dates, compute random numbers, bundle resources, and observe events. Also covered are the Formatter and Scanner classes which make it easy to write and read formatted data, and the new Optional class, which makes it easier to handle situations in which a value may be absent. Finally, the subpackages of java.util are summarized at the end of this chapter. Of particular interest is java.util.function, which defines several standard functional interfaces.


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