Java Collection Tutorial - Java Set.contains(Object o)

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Syntax

Set.contains(Object o) has the following syntax.

boolean contains(Object o)

Example

In the following code shows how to use Set.contains(Object o) method.

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
//from   www  .j a  v a2s.  c o m
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.contains("A"));
  }
}

The code above generates the following result.

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