Set.clear() has the following syntax.
void clear()
In the following code shows how to use Set.clear() method.
//from w w w . j a v a 2s.c o m import java.util.Arrays; import java.util.HashSet; import java.util.Set; public class Main { public static void main(String[] a) { String elements[] = { "A", "B", "C", "D", "E" }; Set<String> set = new HashSet<String>(Arrays.asList(elements)); elements = new String[] { "E", "F" }; set.addAll(Arrays.asList(elements)); System.out.println(set); set.clear(); System.out.println(set); } }
The code above generates the following result.