Scala Map: Check if a map is empty

Last update on December 21 2024 10:27:12 (UTC/GMT +8 hours)

Write a Scala program to create a map and check if it is empty or not.

Sample Solution:

Scala Code:

object CheckMapEmptyExample {
  def main(args: Array[String]): Unit = {
    // Create an empty map
    val map_data = Map.empty[String, Int]

    // Check if the map is empty
    val isEmpty = map_data.isEmpty

    // Print the result
    if (isEmpty) {
      println("Map is empty.")
    } else {
      println("Map is not empty.")
    }
  }
}

Sample Output:

Map is empty

Explanation:

In the above exercise -

• First, we create an empty map "map_data" using the Map.empty method.
• To check if the map is empty, we use the isEmpty method, which returns true if the "map_data" is empty, and false otherwise. We store the results in the isEmpty variable.
• Finally, we use an if statement to print the result based on whether the map is empty or not.

Scala Code Editor :

Previous: Creating and adding key-value pairs.
Next: Find the size of a map.