java string contains at beginning

public class StringExample 
{
    public static void main(String[] args) 
    {
        String blogName = "howtodoinjava.com";
         
        blogName.startsWith(null);
    }
}
public class StringExample 
{
    public static void main(String[] args) 
    {
        String blogName = "howtodoinjava.com";
         
        System.out.println( blogName.startsWith("how") );               //true
         
        System.out.println( "howtodoinjava.com".startsWith("howto") );  //true
         
        System.out.println( "howtodoinjava.com".startsWith("hello") );  //false
    }
}