In the emp table :> > EMPNO ENAME SAL > ==================> 7369 SMITH 1000 > 7499 ALLEN 2000 > 7521 WARD 3000 > 7566 JONES 4000 > 7654 MARTIN 5000> > there is a requirement to have a calculated col.> called cummulative sal> > EMPNO ENAME SAL CUMMULATIVE_SAL> 7369 SMITH 1000 1000> 7499 ALLEN 2000 3000> 7521 WARD 3000 6000> 7566 JONES 4000 10000> 7654
Latest Answer: Once u need to override any particular class that class should not be a final but all wrraper classes are final in nature so u cannnot override any warrper class .but String class is not a warpper class but even this is declared ...
