IMMUTABLE STRINGS

In java, string objects are  unmodifiable or unchangeable, simply called immutable.

e.g for the same is as below::

class Testimmutablestring
{  
                               public static void main(String args[])
                               {  
                               String m="SKN";                                                                                                                              m.concat(" SCOE");//concat() method appends the string at the end  
                               System.out.println(s);//will print SKN because strings are immutable objects  
                               }  
}  




class Testimmutablestring
{  
                           public static void main(String args[])
                          {  
                          String m="SKN";                                                                                                                         m=m.concat(" SCOE");
                          System.out.println(s);//will print SKN SCOE
                         }  
}