Which of these classes defined in java.io and used for file-handling are abstract?A. InputStreamB. PrintStreamC. ReaderD. FileInputStreamE. FileWriter A and C B and D A, B and E Only C Only A TRUE ANSWER : ? YOUR ANSWER : ?
System class is defined in ................. java.lang package java.io package java.awt package None of these java.util package TRUE ANSWER : ? YOUR ANSWER : ?