JavaTuples fromIterable() method

The fromIterable() method in org.javatuples is used to instance a tuple in a semantically elegant way, with the values of the iterable, given as parameters. This method can be used for any tuple class object of the javatuples library. It is a static function in each javatuple class and it returns the tuple class object of the called class, with the values initialized by the corresponding values of the iterable.

Method Declaration:

public static <X> TupleClass<X> fromIterable(Iterable<X> iterable)

Syntax:

TupleClass<X> obj = TupleClass.fromIterable(Iterable<X> iterable)

Parameters: This method takes iterable as parameter where:

• X– represents the datatype of values in the iterable.
• iterable– represents the iterable of values to be inserted into TupleClass.
• TupleClass– represents the JavaTuple Class used like Unit, Quintet, Decade, etc.

Return Value: This method returns the object of TupleClass, which calls the method, with the values of the iterable, passed as the parameters.

Below programs illustrate the various ways to use fromIterable() method:

Program 1: Using fromIterable() with Unit class:

// Below is a Java program to create
// a Unit tuple from fromIterable() method

import java.util.*;
import org.javatuples.Unit;

class GfG {
    public static void main(String[] args)
    {
        // Creating an iterable with one value
        Iterable<String> itr = Arrays.asList("GeeksforGeeks");

        // Using fromIterable() method
        Unit<String> unit = Unit.fromIterable(itr);

        System.out.println(unit);
    }
}

Output:

[GeeksforGeeks]

Program 2: Using fromIterable() with Decade class:

// Below is a Java program to create
// a Unit tuple from fromIterable() method

import java.util.*;
import org.javatuples.Decade;

class GfG {
    public static void main(String[] args)
    {
        // Creating an iterable with 10 value
        Iterable<String> itr = Arrays.asList("GeeksforGeeks",
                                             "Geeks",
                                             "for",
                                             "Geeks",
                                             "A",
                                             "Computer",
                                             "Science",
                                             "Portal",
                                             "for",
                                             "Geeks",
                                             "RishabhPrabhu");

        // Using fromIterable() method
        Decade<String, String, String, String, String,
               String, String, String, String, String>
            decade = Decade.fromIterable(itr);

        System.out.println(decade);
    }
}

Output:

[Geeks, for, Geeks, A, Computer, Science, Portal, for, Geeks, RishabhPrabhu]

Note: Similarly, it can be used with any other JavaTuple Class.