Collections APIs provide developers with a set of classes and interfaces that make it easier to handle collections of objects.
I wanted to create a list of options for testing purposes. At first, I did this: ArrayList<String> …
java collections arraylist initializationIf I have an object implementing the Map interface in Java and I wish to iterate over every pair contained …
java dictionary collections iterationWe create a Set as: Set myset = new HashSet() How do we create a List in Java?
java list collectionsWhat are the differences between a HashMap and a Hashtable in Java? Which is more efficient for non-threaded applications?
java collections hashmap hashtableI am relatively new to Java, and often find that I need to sort a Map<Key, Value> …
java sorting dictionary collectionsIs there some way of initializing a Java HashMap like this?: Map<String,String> test = new HashMap<…
java dictionary collections initializationI've always been one to simply use: List<String> names = new ArrayList<>(); I use the interface …
java arraylist collections linked-listI have a List of doubles in java and I want to sort ArrayList in descending order. Input ArrayList is …
java sorting arraylist collectionsIs there any built-in method in Java which allows us to convert comma separated String to some container (e.g …
java string collections splitBeing somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the …
java loops collections iteration