# Scala Set subsetOf() method with example

• Last Updated : 18 Oct, 2019

The subsetOf() method is utilized to test if a set is a subset of another set.

Method Definition: def subsetOf(that: Set[A]): Boolean

Return Type: It returns true if a set is subset of another set else it returns false.

Example #1:

 `// Scala program of subsetOf() ``// method `` ` `// Creating object ``object` `GfG ``{ `` ` `    ``// Main method ``    ``def` `main(args``:``Array[String]) ``    ``{ ``        ``// Creating a set ``        ``val` `s``1` `=` `Set(``4``, ``12``, ``2``, ``31``) ``         ` `        ``val` `s``2` `=` `Set(``4``, ``12``)``         ` `        ``// Applying subsetOf method ``        ``val` `result ``=` `s``2``.subsetOf(s``1``)``         ` `        ``// Display output``        ``println(result)``    ``} ``} `
Output:
```true
```

Example #2:

 `// Scala program of subsetOf() ``// method `` ` `// Creating object ``object` `GfG ``{ `` ` `    ``// Main method ``    ``def` `main(args``:``Array[String]) ``    ``{ ``        ``// Creating a set ``        ``val` `s``1` `=` `Set(``4``, ``12``, ``2``, ``31``) ``         ` `        ``val` `s``2` `=` `Set(``4``, ``12``)``         ` `        ``// Applying subsetOf method ``        ``val` `result ``=` `s``1``.subsetOf(s``2``)``         ` `        ``// Display output``        ``println(result)``    ``} ``} `
Output:
```false
```

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