Collection and Utility Classes
The java.util package contains a number of useful classes that support important functionality as part of the Java API. These classes provide basic utilities that you frequently end up either writing yourself or purchasing from a third party when you are working in other languages. The creators of Java tried to capture the best concepts from several programming languages, and the results of this are clearly seen in the collection and utility classes. This aspect of Java was in particular influenced by Smalltalk, which is a pure object-oriented language highly regarded for its abundance of utility classes.
This chapter walks you through the majority of the java.util classes with examples and guidelines on their uses. ...
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