What is a Pair Class in Java Tuples

A Pair class in JavaTuples can only have 2 elements. The JavaTuples library includes the Pair class.

The following is the declaration −

public final class Pair<P, Q>
extends Tuple
implements IValue0<P>, IValue1<Q>

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

import org.javatuples.Pair;

Some of its features include −

• Typesafe
• Serializable
• Comparable
• Iterable
• Immutable

Note − Steps to download and run JavaTuples program If you are using Eclipse IDE to run Pair Class in JavaTuples, then Right Click Project → Properties → Java Build Path → Add External Jars and upload the downloaded JavaTuples jar file.

Let us see how to create a Pair Tuple in Java. The following is an example −

Example

import org.javatuples.Pair;
public class Demo {
   public static void main(String[] args) {
      Pair < String, String > p = new Pair("Chinese", "French");
      System.out.println("Result = " + p);
   }
}

Output

Result = [Chinese, French]