Q:

Scala program to delete elements from the HashMap collection

belongs to collection: Scala Map Programs

YasminRadwan26
Save to bookmark
|
2022-07-09
|
  204 
0

Here, we will create a map using the HashMap collection. The HashMap collection stores elements in key/value pairs. It uses hash code to store elements and return a map. Then we will delete elements from the HashMap collection using the "-" operator and printed the updated HashMap collection.

Scala programming, examples, Scala programming examples,
login and add your own answer to this question

All Answers

YasminRadwan26
2022-07-09
need an explanation for this answer? contact us directly to get an explanation for this answer

Program/Source Code:

The source code to delete elements to the HashMap collection is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to delete elements from 
// the HashMap collection

import scala.collection.immutable._

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

    println("Student Information:");
    for ((stuId, stuName) <- students)
      printf("\tId: %d, Name: %s\n", stuId, stuName);

    students = students - (102)

    println("Student Information After deleting elements:");
    for ((stuId, stuName) <- students)
      printf("\tId: %d, Name: %s\n", stuId, stuName);
  }
}

Output:

Student Information:
	Id: 101, Name: Amit
	Id: 102, Name: Arun
	Id: 103, Name: Anit
Student Information After deleting elements:
	Id: 101, Name: Amit
	Id: 103, Name: Anit

Explanation:

Here, we used an object-oriented approach to create the program. And, we imported Collection classes using the below statement,

import scala.collection.mutable._

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 a HashMap collection students. The students collection contains student id and student name. Then we removed the element from the students HashMap using the "-" operator and printed the updated collection on the console screen.

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Scala Map Programs
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
<< Scala program to add elements to the HashMap colle...