I would like to convert an array to a Set in Java. There are some obvious ways of doing this (i.e. with a loop) but I would like something a bit neater, something like: java.util.Arrays.asList(Obj...

Jul 29, 2009 · The third way of initializing is useful when you declare an array first and then initialize it, pass an array as a function argument, or return an array. The explicit type is required.

Jul 12, 2013 · Set <String[]> strSet = new HashSet <String[]> (); Is there an easy way to make a Set of arrays in Java, or do I have to code my own implementation? Adding an object to a Set checks the …

Feb 3, 2012 · As of Java-8, there are four variants of the setAll method which sets all elements of the specified array, using a provided generator function to compute each element.

But in Java, how can I initialize all the elements to a specific value? Whenever we write int[] array = new int[10], this simply initializes an array of size 10 having all elements set to 0, but I just want to …

1 I guess the problem is that Set<Integer>.toArray converts to Integer[], rather than int[]. So you have no simple way: you need to iterate through the set manually and add its elements to the int array. …

Jan 11, 2010 · Set<String> h = new HashSet<>(Arrays.asList("a", "b")); Again, this is not time efficient since you are constructing an array, converting to a list and using that list to create a set. When …

Jan 29, 2013 · From Sun's Java Tutorial, I would have thought this code would convert a set into an array.

Feb 8, 2014 · String[] item = s.toArray(new String[s.size()]); As per Java doc - toArray function ( which is the one you need ) toArray () Returns an array containing all of the elements in this list in proper …

An empty array is an array with no elements. For non-empty arrays, elements are initialized to their default value.