a object c) class b) method 9. If an object is referenced by two different variables then these variables values are d) none a) different c) cqual b) equalled to objects data 10. Class constants should have modifier keywords d) all and a) private, final b) static, private c) statie, final d) none 11. Characters are represented in computer by a) ASCII b) char type e) float numbers d) as a string 12. charAt) function returns a) substring b) integer c) character d) all 13. [6-30-9/patter returns a) character, digit b) character c) digit d) character or digit 14.[0-9][0-2/pattern retums a) character or digit b) character c) digit d) character and digit 15. An object data of String type can a) be changed b) both a) and b) c) can not be changed d) none 16. An object data of StringBuffer type can a) be changed b) both a) and b) c) can not be changed d) none block 17. An exception can be caught by ) try d) finally block 18. An exception propogator contains a) chatch c) try 19. An unchecked exception is tested at a) run time c) compile time 20. Assertion condition expression returns a) exception type c) interger type b) catch c) try, catch b) no catch d) none b) test time d) debug time b) boolean oyre d) string or