If you simply pour a Java List into a HashSet automatically dedupes the contents. Depending upon the use case, you can leave the content in the HashSet and use that component to keep the data set ...

First try to add items to the HashSet, and if the HashSet indicates the item is already in the set, add that duplicate to the List: We can combine the improved speed of the HashSet above with the ...

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions. Programmers frequently need ...

The next version of Java SE, JDK 12, has reached the first ramp-down point where the feature set is frozen. Amongst other things, JDK 12 provides a preview of an enhanced switch statement ...