# Scala List forall() method with example

Last Updated : 29 Jul, 2019

The forall() method is utilized to check if the given predicate satisfies all the elements of the list or not.

Method Definition: def forall (p: (a) => Boolean) : Boolean

Return Type: It returns true if the stated predicate holds true for all the elements of the list else it returns false.

Example #1:

 `// Scala program of forall() ` `// method ` ` `  `// Creating object ` `object` `GfG ` `{  ` ` `  `    ``// Main method ` `    ``def` `main(args``:``Array[String]) ` `    ``{ ` `        ``// Creating a list ` `        ``val` `m``1` `=` `List(``3``, ``6``, ``12``, ``9``, ``21``) ` `         `  `        ``// Applying forall method ` `        ``val` `result ``=` `m``1``.forall(y ``=>` `{y ``%` `3` `==` `0``}) ` `         `  `        ``// Displays output ` `        ``println(result) ` `     `  `    ``} ` `}  `

Output:

```true
```

Example #2:

 `// Scala program of forall() ` `// method ` ` `  `// Creating object ` `object` `GfG ` `{  ` ` `  `    ``// Main method ` `    ``def` `main(args``:``Array[String]) ` `    ``{ ` `        ``// Creating a list ` `        ``val` `m``1` `=` `List(``3``, ``6``, ``2``, ``9``, ``21``) ` `         `  `        ``// Applying forall method ` `        ``val` `result ``=` `m``1``.forall(y ``=>` `{y ``%` `3` `==` `0``}) ` `         `  `        ``// Displays output ` `        ``println(result) ` `     `  `    ``} ` `}  `

Output:

```false
```