Introduction

In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

public class Javaexcercise {
public static void main(String[] args)
  {  
    String str = "TechStudy.org";
    // Get the length of str.
    int len = str.length();
    System.out.println("The string length of '"+str+"' is: "+len);
   }
}

Result