Total number of characters in the String with Example : Java Program Code

The number of characters in the string can be calculated  using array in java .
It is very useful when we want to restrict the number of characters for a particular field in the UI.
for example :
we want that the first name of user should not exceed 20 characters , so , to check that validation we need to calculate the number of characters in the user input .
if user inputs like 
"Alive is awesome"
then the number of characters in it is : 14



Demo :

Please find the code below :

public class CountCharacters
{
    static int i,c=0,res;
    
    static int charcount(String s)
    {
        for(i=0,c=0;i<s.length();i++)
        {
            char ch=s.charAt(i);
            if(ch!=' ')
            c++;
        }
        return c;
    }
    
    public static void main (String args[])
    {
        res=CountCharacters.charcount(" manchester united is also known as red devil ");
        //string is always passed in double quotes
        
        System.out.println("The number of characters in the String are :  "+res);
    }
}