```
 class Simple{  
     public static void main(String args[]){  
         String s="Sachin"+" Tendulkar";  
         System.out.println(s);//Sachin Tendulkar  
     }  
 }  

```

The compiler transforms this to:

```
    String s = (new StringBuilder()).append("Sachin").append(" Tendulkar").toString();  

```

what is mean by last line?