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Scala program to demonstrate the 'private' access modifier

Here, we are going to demonstrate the 'private' access modifier in Scala programming language.
Submitted by Nidhi, on June 23, 2021

Problem Solution:

Here, we will create a class with a private data member. The private members of the class cannot be accessed outside the class.

Program/Source Code:

The source code to demonstrate the private access modifier is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to demonstrate the
// "private" access modifier

class Demo {
  private var num: Int = 10
  def printNum() {
    printf("Num: %d\n", num);
  }
}

object Sample {
  def main(args: Array[String]) {
    var obj = new Demo();

    // This statement will generate an error because
    // private members cannot access outside the class.
    // obj.num=20;

    obj.printNum();
  }
}

Output:

Num: 10

Explanation:

Here, we used an object-oriented approach to create the program. And, we created an object Sample.

We created a class Demo. The Demo class contains a private member num, which is initialized with 10. And, we created a printNum() method to print the value of num on the console screen.

Then we defined the main() function. The main() function is the entry point for the program.

In the main() function, we created an object of the Demo class and called printNum() method using the created object and print the value of private member num on the console screen.

Scala Classes & Objects Programs »


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