Java Collection Tutorial - Java Set.size()

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Syntax

Set.size() has the following syntax.

int size()

Example

In the following code shows how to use Set.size() method.

/*from   w ww  . j  ava 2 s  .  co  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));

    System.out.println(set.size());
  }
}

The code above generates the following result.

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