How to test that an array contains a certain value

Question

If I have an array and if I want to find certain value from the array, then how to do it?

Answer 1

We can use a Stream to check whether an array contains specific int, long or double values.

For this solution, we have to import IntStream library.

import java.util.stream.IntStream;

Following is the solution to find a specific integer value.

public static void main(String[] args) {

  int[] a = {1,2,3,4};

  boolean result = IntStream.of(a).anyMatch(x -> x == 5);

  System.out.println(result);

 }

}

Output is:

false

Answer 2

public static final String[] VALUES = new String[] {"AB","BC","CD","AE"};

private static final String[] VALUES = new String[] {"AB","BC","CD","AE"};

private static final Set<String> VALUES = new HashSet<String>(Arrays.asList(
     new String[] {"AB","BC","CD","AE"}
));