How to calculate length of the string using String.length() method in Java?

Consider the program:

import java.lang.*;

public class JavaStringLengthPrg
{
	public static void main(String []args)
	{
		int len=0;

		/*create string object*/
		String str="includehelp.com";
		
		//getting length of the string
		len = str.length();
		
		//printing length
		System.out.println("String Length is = "+ len);
	}
}

Output

String Length is = 15