Q:

Scala program to check a Map collection is empty

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YasminRadwan26
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2022-07-08
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Here, we will create empty and non-empty Map collections. Then we will check Map collection is empty or not using the isEmpty method and print appropriate messages on the console screen.

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YasminRadwan26
2022-07-08
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Program/Source Code:

The source code to check a Map collection is empty is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to check a 
// Map collection is empty

object Sample {
  // Main method
  def main(args: Array[String]) {
    var employees: Map[String, String] = Map.empty[String, String];
    var students = Map((101, "Amit"), (102, "Arun"), (103, "Anit"));

    if (employees.isEmpty)
      println("Employees-> Empty Map");
    else
      println("Employees-> Non-empty Map");

    if (students.isEmpty)
      println("Students -> Empty Map");
    else
      println("Students -> Non-empty Map");
  }
}

Output:

Employees-> Empty Map
Students -> Non-empty Map

Explanation:

Here, we used an object-oriented approach to create the program. And, we also created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created two maps students, employees. The students map contains the student id and student name. The employee is an empty Map collection. Then we checked Map is empty or not using the isEmpty method and printed the appropriate messages on the console screen.

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