String concatenation in Scala
A string is a sequence of characters. In Scala, objects of String are immutable which means a constant and cannot be changed once created. when a new string is created by adding two strings is known as a concatenation of strings. Scala provides concat() method to concatenate two strings, this method returns a new string which is created using two strings. we can also use ‘+’ operator to concatenate two strings.
Syntax:
str1.concat(str2); Or "str1" + "str2";
Below is the example of concatenating two strings.
Using concat() method: This method appends argument to the string.
Example #1:
Scala
// Scala program to illustrate how to // concatenate strings object GFG { // str1 and str2 are two strings var str1 = "Welcome! GeeksforGeeks " var str2 = " to Portal" // Main function def main(args: Array[String]) { // concatenate str1 and str2 strings // using concat() function var Newstr = str1.concat(str2); // Display strings println("String 1:" +str1); println("String 2:" +str2); println("New String :" +Newstr); // Concatenate strings using '+' operator println("This is the tutorial" + " of Scala language" + " on GFG portal"); } } |
Output:
String 1:Welcome! GeeksforGeeks String 2: to Portal New String :Welcome! GeeksforGeeks to Portal This is the tutorial of Scala language on GFG portal
In above example, we are joining the second string to the end of the first string by using concat() function. string 1 is Welcome! GeeksforGeeks string 2 is to Portal. After concatenating two string we get new string Welcome! GeeksforGeeks to Portal.
Using + operator : we can add two string by using + operator.
Example #2:
Scala
// Scala program to illustrate how to // concatenate strings // Creating objectobject GFG { // Main method def main(args: Array[String]) { var str1 = "Welcome to "; var str2 = "GeeksforGeeks"; // Concatenating two string println("After concatenate two string: " + str1 + str2); }} |
Output:
After concatenate two string: Welcome toGeeksforGeeks
In above example, string 1 is Welcome to string 2 is GeeksforGeeks. By using + operator concatenating two string we get output After concatenate two string: Welcome toGeeksforGeeks.
