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

Since Septet 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 Septet<A, B, C, D, E, F, G> extends Tuple
implements IValue0<A>, IValue1<B;>, IValue2<C>, IValue3<D>, IValue4<E>, IValue5<F, IValue6<G>

Class hierarchy

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

Creating Septet Tuple

• From Constructor:

  Syntax:

  Septet<A, B, C, D, E, F, G> septet = 
      new Septet<A, B, C, D, E, F, G>
          (value1, value2, value3, value4, value5, value6, value7);
  

  Example:

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

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  Output:

  
  
  
  

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

• Using with() method: The with() method is a function provided by the JavaTuples library, to instantiate the object with such values.

  Syntax:

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

  Example:

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

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  Output:

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

• 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:

  Septet<type1, type2, type3, type4, type5, type6, type7> septet = 
      Septet.fromCollection(collectionWith_7_value);
  
  Septet<type1, type2, type3, type4, type5, type6, type7> septet = 
      Septet.fromArray(arrayWith_7_value);
  

  Example:

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

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  Output:

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

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:

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

type1 val1 = septet.getValue0();

Example:

Output:

1
3

Setting Septet Value

Since the Tuples are immutable, it means that modifying a value at any 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:

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

Septet<type1, type2, type3, type4, type5, type6, type7> 
    otherSeptet = septet.setAtX(value);

Example:

Output:

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

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:

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

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

Example:

Output:

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

Searching in Septet

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:

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

boolean res = septet.contains(value2);

Example:

Output:

true
false

Iterating through Septet

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

Syntax:

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

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

Example:

Output:

1
2
3
4
5
6
7

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