Convert Int to String in Scala

  1. Use the toString() Method in Scala
  2. Use the valueOf() Method of Java
  3. Use StringBuilder in Scala

This article will teach how to convert an integer to a string in Scala.

Use the toString() Method in Scala

In Scala, the toString() method returns the string representation of the specified value.

Method definition:

def toString():String

Return type: This method returns the string representation of the value.

Syntax:

int_value.toString

Example code:

object MyClass {

    def main(args: Array[String]) {

       val ans = (1234).toString

        println(ans)
        println(ans.getClass)

    }
}

Output:

1234
class java.lang.String

We have converted the integer 1234 to string using the toString method and stored it in a variable ans. Then we printed the answer along its class using the getClass method.

Use the valueOf() Method of Java

valueOf() method converts the data into a string. It’s an overloaded static method for all Java’s built-in types within a string.

We can use this same method in our Scala programs as well.

Syntax:

String.valueOf(x)

It returns the string representation of integer x.

Example code:

object MyClass {

    def main(args: Array[String]) {

       val num = 1234
       val ans = String.valueOf(num)

        println(ans)
        println(ans.getClass)

    }
}

Output:

1234
class java.lang.String

Use StringBuilder in Scala

We know that String objects are immutable, meaning they cannot be updated once created. We sometimes want the string to be modified frequently; we can use the StringBuilder class in such cases.

This is very useful if we concatenate multiple values into a string.

Example code:

object MyClass {

    def main(args: Array[String]) {

       val x = 1234
       val y = 567
       val z = 900
       val ans = new StringBuilder();
       ans.append(x)
       ans.append(y)
       ans.append(z)

        println(ans)
        println(ans.getClass)

    }
}

Output:

1234567900
class scala.collection.mutable.StringBuilder

The above code can be written using the StringBuffer class; the StringBuffer class is more thread-safe than the StringBuilder class.

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Related Article - Scala String

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