What is a Unit class in JavaTuples?

A Unit class is a Tuple of one element. It is in the JavaTuples library.

The following is the declaration −

public final class Unit<A>
extends Tuple
implements IValue0<A>

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

import org.javatuples.Unit;

Some of its features include −

• Typesafe
• Serializable
• Comparable
• Iterable
• Immutable

Let us see an example to create Unit Tuple in Java −

Note − Steps to download and 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.

Example

import org.javatuples.Unit;
public class Demo {
   public static void main(String[] args) {
      Unit<String> u = new Unit<String>("This is demo text!");
      System.out.println(u);
   }
}

Output

[This is demo text!]