assignment

1. // What is Mutable String in Java Explain with an Example

   
   

   public class assignment {

       public static void main(String[] args) {

           String rakesh = "rakesh";

           System.out.println(rakesh);

           rakesh = rakesh.concat("gupta");

           System.out.println(rakesh);

   
   
   

          

       }

      

   }
2. //write a programmer to reverse a string

   
   

   public class assignment1 {

       public static void main(String[] args) {

         StringBuffer rakesh = new StringBuffer("rakesh");

         rakesh.reverse();

         System.out.println(rakesh);

          

          

       }

      

   }

   
   

       

    }

   

}