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Generics in Java programming Why use generics? How to use generics for type safety Generics in the Java Collections Framework Examples of generic types in Java Raw types vs. generics ...

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Why should you use Collections class methods rather than similarly named fields to obtain empty collections? Type safety makes the crucial difference.

Another approach to find duplicates in a Java list is to use the frequency method of the Collections class. This example prints out the number of times each unique element in the List occurs, which is ...