The contains() method of the Java Ennead Tuple

The contains() method of the Ennead Tuple in Java is used to search for a value in the Tuple. To find the existence of a value, you need to just set it as a parameter of the method. It returns a boolean value i.e. TRUE is returned for the existence of a value, else FALSE.

Let us first see what we need to work with JavaTuples. To work with Ennead class in JavaTuples, you need to import the following package −

import org.javatuples.Ennead;

Note − Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External Jars and upload the downloaded JavaTuples jar file. Refer the below guide for all the steps to run JavaTuples −

Steps − How to run JavaTuples program in Eclipse

The following is an example to implement the contains() method of the Ennead Tuple in Java −

Example

import org.javatuples.Ennead;
public class Demo {
   public static void main(String[] args) {
      Ennead<String, String, String, String, String, String, String, String, String> e =
         Ennead.with("Katie", "Tom","Ryan", "Tim","Bradley", "David","Steve", "Brad", "Jacob");
      System.out.println("Tuple elements = "+e);
      boolean res = e.contains("Justin");
      System.out.println("Does the value exist in the Tuple? "+res);
   }
}

Output

Tuple elements = [Katie, Tom, Ryan, Tim, Bradley, David, Steve, Brad, Jacob]
Does the value exist in the Tuple? False