# Scala Set subsetOf() method with example

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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