Collections APIs provide developers with a set of classes and interfaces that make it easier to handle collections of objects.
How do I convert int[] into List<Integer> in Java? Of course, I'm interested in any other answer …
java arrays collections boxing autoboxingI have a HashMap: private HashMap<TypeKey, TypeValue> example = new HashMap<TypeKey, TypeValue>(); Now I would …
java collectionsI have a List<String> object that contains country names. How can I sort this list alphabetically?
java list sorting collections alphabeticalHow can I clone an ArrayList and also clone its items in Java? For example I have: ArrayList<Dog&…
java collections clone deep-copyWhat is the simplest way to find if two Lists contain exactly the same elements, in the standard Java libraries? …
java collectionsDoes anyone know if there is a good equivalent to Java's Set collection in C#? I know that you can …
c# .net collections setIf I have a collection, such as Collection<String> strs, how can I get the first item out? …
java collections iterableI'd like to create new item that similarly to Util.Map.Entry that will contain the structure key, value. The …
java dictionary collections key-valueWhile looping through a list, I would like to remove an item of a list depending on a condition. See …
java collectionsI was playing around with Java 8 lambdas to easily filter collections. But I did not find a concise way to …
collections lambda java-8 java-stream