Snippets tagged “hashset”

To convert a Set to a List in Java without creating a new List object, you can use the List constructor that takes a Collection as an argument.

To convert a List to a Set in Java, you can use the new HashSet<>(list) constructor to create a new HashSet and initialize it with the elements of the List.

To remove repeated elements from an ArrayList in Java, you can use the removeAll method and pass it a Collection containing the elements to be removed.

To convert an array to a Set in Java, you can use the Arrays.asList() method to create a List from the array, and then use the List.toSet() method to create a Set from the List.

To initialize the values of a HashSet when constructing the set, you can use one of the HashSet constructors that takes a Collection as an argument.

The equals() and hashCode() methods are two methods that are defined in the Object class, which is the superclass of all classes in Java.