# Scala | Product2

• Last Updated : 13 May, 2019

Product2 is a trait in Scala, which is a Cartesian product of two elements. In build-in classes it can be considered as tuple of two elements. The Linear Supertypes here are Product, Equals, Any, and the sub-class here is Tulple2. Product2 extends Product like below:

`Product2[+T1, +T2] extends Product`

Here, T1 and T2 are the types of the elements.
Now, lets see some examples.
Example :

 `// Scala program of a trait ` `// Product2 ` ` `  `// Creating an object ` `object` `GfG ` `{ ` ` `  `    ``// Main method ` `    ``def` `main(args``:` `Array[String])  ` `    ``{ ` `     `  `        ``// Applying Produt2 trait and ` `        ``// assigning values ` `        ``val` `pro``:` `Product``2``[String, Int] ``=` `(``"Nidhi"``, ``24``) ` `         `  `        ``// Displays the first element ` `        ``println(pro.``_``1``) ` `         `  `        ``// Displays the second element ` `        ``println(pro.``_``2``) ` `         `  `    ``} ` `} `

Output:

```Nidhi
24
```

Here, _1 is the extension for the first element of the product stated above and _2 is the extension for the second element of the product.

Example :

 `// Scala program of a map ` `// using trait Product2 ` ` `  `// Creating an object ` `object` `GfG ` `{ ` ` `  `    ``// Main method ` `    ``def` `main(args``:` `Array[String]) ` `    ``{ ` `     `  `        ``// Applying Product2 trait with ` `        ``// an iterator ` `        ``val` `x ``:` `Iterator[Product``2``[String, Int]] ``=` `         `  `        ``// List of the elements  ` `        ``List(``"Nidhi"` `-``>` `24``, ``"Nisha"` `-``>` `22``, ``"Preeti"` `-``>` `26``).iterator ` `         `  `        ``// Calling first types of elements  ` `        ``// of the trait Product2 from the ` `        ``// List using map method ` `        ``val` `result ``=` `x.map(y ``=>` `y.``_``1``).toList ` `         `  `        ``// Displays String types of ` `        ``// the list ` `        ``println(result) ` `         `  `    ``} ` `} `

Output:

```List(Nidhi, Nisha, Preeti)
```

Hence, Iteration is easily done here.

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