The toString() method in org.javatuples is used to convert the values in TupleClass into a String. This method is inherited from the JavaTuple class. This method can be used to any tuple class object of javatuples library. It returns a String value formed with the values in the TupleClassObject.
Method Declaration:
public final String toString()
Syntax:
String str = TupleClassObject.toString()
Here TupleClassObject represents the JavaTuple Class object used like Unit, Quintet, Decade, etc.
Return Value: This method returns a String value which contains the elements of the TupleClassObject, separated by ‘, ‘.
Below programs illustrate the various ways to use toString() method:
Program 1: Using toString() with Unit class:
// Below is a Java program to use toString() method  import java.util.*;import org.javatuples.Unit;  class GfG {    public static void main(String[] args)    {        // Creating an Unit with one value        Unit<String> unit = Unit.with("Lazyroar");          // Using toString() method        String str = unit.toString();          System.out.println(str);    }} |
Output:
[Lazyroar]
Program 2: Using toString() with Quartet class:
// Below is a Java program to use toString() method  import java.util.*;import org.javatuples.Quartet;  class GfG {    public static void main(String[] args)    {        // Creating a quartet        Quartet<Integer, String, String, Double> quartet            = Quartet.with(Integer.valueOf(1),                           "Lazyroar",                           "A computer portal",                           Double.valueOf(20.18));          // Using toString() method        String str = quartet.toString();          // Printing the String        System.out.println(str);    }} |
Output:
[1, Lazyroar, A computer portal, 20.18]
Note: Similarly, it can be used with any other JavaTuple Class.
