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Octet Class in JavaTuples

A Octet is a Tuple from JavaTuples library that deals with 3 elements. Since this Octet is a generic class, it can hold any type of value in it.

Since Octet is a Tuple, hence it also has all the characterstics of JavaTuples:

  • They are Typesafe
  • They are Immutable
  • They are Iterable
  • They are Serializable
  • They are Comparable (implements Comparable<Tuple>)
  • They implement equals() and hashCode()
  • They also implement toString()

Class Declaration

public final class Octet<A, B, C, D, E, F, G, H> extends Tuple
implements IValue0<A>, IValue1<B>, IValue2<C>, IValue3<D>, IValue4<E>, 
                                            IValue5<F, IValue6<G, IValue7<H>

Class hierarchy

Object
  ↳ org.javatuples.Tuple
      ↳ org.javatuples.Octet<A, B, C, D, E, F, G, H>

Creating Octet Tuple

  • From Constructor:

    Syntax:

    Octet<A, B, C, D, E, F, G, H> octet = 
        new Octet<A, B, C, D, E, F, G, H>
            (value1, value2, value3, value4, value5, value6, value7, value8);
    

    Example:

    // Below is a Java program to create
    // a Octet tuple from Constructor
      
    import java.util.*;
    import org.javatuples.Octet;
      
    class GfG {
        public static void main(String[] args)
        {
            Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
                = Octet.with(Integer.valueOf(1),
                             Integer.valueOf(2),
                             Integer.valueOf(3),
                             Integer.valueOf(4),
                             Integer.valueOf(5),
                             Integer.valueOf(6),
                             Integer.valueOf(7),
                             Integer.valueOf(8));
      
            System.out.println(octet);
        }
    }

    Output:



    [1, 2, 3, 4, 5, 6, 7, 8]
    
  • Using with() method: The with() method is a function provided by the JavaTuples library, to instantiate the object with such values.

    Syntax:

    Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
        Octet.with(value1, value2, value3, value4, value5, value6, value7, value8);
    

    Example:

    // Below is a Java program to create
    // a Octet tuple from with() method
      
    import java.util.*;
    import org.javatuples.Octet;
      
    class GfG {
        public static void main(String[] args)
        {
            Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
                = Octet.with(Integer.valueOf(1),
                             Integer.valueOf(2),
                             Integer.valueOf(3),
                             Integer.valueOf(4),
                             Integer.valueOf(5),
                             Integer.valueOf(6),
                             Integer.valueOf(7),
                             Integer.valueOf(8));
      
            System.out.println(octet);
        }
    }

    Output:

    [1, 2, 3, 4, 5, 6, 7, 8]
    
  • From other collections: The fromCollection() method is used to create a Tuple from a collection, and fromArray() method is used to create from an array. The collection/array must have the same type as of the Tuple and the number of values in the collection/array must match the Tuple class.

    Syntax:

    Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
        Octet.fromCollection(collectionWith_8_value);
    
    Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
        Octet.fromArray(arrayWith_8_value);
    

    Example:

    // Below is a Java program to create
    // a Octet tuple from Collection
      
    import java.util.*;
    import org.javatuples.Octet;
      
    class GfG {
        public static void main(String[] args)
        {
            // Creating Octet from List
            List<Integer> list = new ArrayList<Integer>();
            list.add(1);
            list.add(2);
            list.add(3);
            list.add(4);
            list.add(5);
            list.add(6);
            list.add(7);
            list.add(8);
      
            Octet<Integer, Integer, Integer, Integer, Integer, Integer, Integer> octet
                = Octet.fromCollection(list);
      
            // Creating Octet from Array
            Integer[] arr = { 1, 2, 3, 4, 5, 6, 7, 8 };
      
            Octet<Integer, Integer, Integer, Integer, Integer, Integer, Integer> otherOctet
                = Octet.fromArray(arr);
      
            System.out.println(octet);
            System.out.println(otherOctet);
        }
    }

    Output:

    [1, 2, 3, 4, 5, 6, 7, 8]
    [1, 2, 3, 4, 5, 6, 7, 8]
    

Getting Value

The getValueX() method can be used to fetch the value in a Tuple at index X. The indexing in Tuples start with 0. Hence the value at index X represents the value at position X+1.

Syntax:

Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
    new Octet<type1, type2, type3, type4, type5, type6, type7>
        (value1, value2, value3, value4, value5, value6, value7, value8);

type1 val1 = octet.getValue0();

Example:

// Below is a Java program to get
// a Octet value
  
import java.util.*;
import org.javatuples.Octet;
  
class GfG {
    public static void main(String[] args)
    {
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
            = Octet.with(Integer.valueOf(1),
                         Integer.valueOf(2),
                         Integer.valueOf(3),
                         Integer.valueOf(4),
                         Integer.valueOf(5),
                         Integer.valueOf(6),
                         Integer.valueOf(7),
                         Integer.valueOf(8));
  
        System.out.println(octet.getValue0());
        System.out.println(octet.getValue2());
    }
}

Output:



1
3

Setting Octet Value

Since the Tuples are immutable, it means that modifying a value at an index is not possible. Hence JavaTuples offer setAtX(value) which creates a copy of the Tuple with a new value at index X, and returns that Tuple.

Syntax:

Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
    new Octet<type1, type2, type3, type4, type5, type6, type7>
      (value1, value2, value3, value4, value5, value6, value7, value8);

Octet<type1, type2, type3, type4, type5, type6, type7> 
    otherOctet = octet.setAtX(value);

Example:

// Below is a Java program to set
// a Octet value
  
import java.util.*;
import org.javatuples.Octet;
  
class GfG {
    public static void main(String[] args)
    {
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
            = Octet.with(Integer.valueOf(1),
                         Integer.valueOf(2),
                         Integer.valueOf(3),
                         Integer.valueOf(4),
                         Integer.valueOf(5),
                         Integer.valueOf(6),
                         Integer.valueOf(7),
                         Integer.valueOf(8));
  
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> otherOctet
            = octet.setAt3(40);
  
        System.out.println(otherOctet);
    }
}

Output:

[1, 2, 3, 40, 5, 6, 7, 8]

Adding a value

Adding a value can be done with the help of addAtX() method, where X represent the index at which the value is to be added. This method returns a Tuple of element one more than the called Tuple.

Syntax:

Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
    new Octet<type1, type2, type3, type4, type5, type6, type7>
        (value1, value2, value3, value4, value5, value6, value7, value8);

Octet<type 1, type 2, type 3, type 4, type 5, type 6, type 7> octet = 
    octet.addAtx(value);

Example:

// Below is a Java program to add
// a value
  
import java.util.*;
import org.javatuples.Octet;
import org.javatuples.Ennead;
  
class GfG {
    public static void main(String[] args)
    {
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
            = Octet.with(Integer.valueOf(1),
                         Integer.valueOf(2),
                         Integer.valueOf(3),
                         Integer.valueOf(4),
                         Integer.valueOf(5),
                         Integer.valueOf(6),
                         Integer.valueOf(7),
                         Integer.valueOf(8));
  
        Ennead<Integer, Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> ennead
            = octet.addAt8(9);
  
        System.out.println(ennead);
    }
}

Output:

[1, 2, 3, 4, 5, 6, 7, 8, 9]

Searching in Octet

An element can be searched in a tuple with the pre-defined method contains(). It returns a boolean value whether the value is present or not.

Syntax:



Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
    new Octet<type1, type2, type3, type4, type5, type6, type7>
        (value1, value2, value3, value4, value5, value6, value7, value8);

boolean res = octet.contains(value2);

Example:

// Below is a Java program to search
// a value in a Octet
  
import java.util.*;
import org.javatuples.Octet;
  
class GfG {
    public static void main(String[] args)
    {
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
            = Octet.with(Integer.valueOf(1),
                         Integer.valueOf(2),
                         Integer.valueOf(3),
                         Integer.valueOf(4),
                         Integer.valueOf(5),
                         Integer.valueOf(6),
                         Integer.valueOf(7),
                         Integer.valueOf(8));
  
        boolean exist = octet.contains(5);
        boolean exist1 = octet.contains(false);
  
        System.out.println(exist);
        System.out.println(exist1);
    }
}

Output:

true
false

Iterating through Octet

Since Octet implement the Iterable<Object> interface. It means that they can be iterated in the same way as collections or arrays.

Syntax:

Octet<type1, type2, type3, type4, type5, type6, type7> octet = 
    new Octet<type1, type2, type3, type4, type5, type6, type7>
            (value1, value2, value3, value4, value5, value6, value7, value8);

for (Object item : octet) {
        ...
}

Example:

// Below is a Java program to iterate
// a Octet
  
import java.util.*;
import org.javatuples.Octet;
  
class GfG {
    public static void main(String[] args)
    {
        Octet<Integer, Integer, Integer.Integer, Integer, Integer, Integer, Integer> octet
            = Octet.with(Integer.valueOf(1),
                         Integer.valueOf(2),
                         Integer.valueOf(3),
                         Integer.valueOf(4),
                         Integer.valueOf(5),
                         Integer.valueOf(6),
                         Integer.valueOf(7),
                         Integer.valueOf(8));
  
        for (Object item : octet)
            System.out.println(item);
    }
}

Output:

1
2
3
4
5
6
7
8




This article is attributed to GeeksforGeeks.org

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