Which of the following data types is returned by every method of OutputStream? (a) int (b) float (c)

Which of the following data types is returned by every method of OutputStream? (a) int (b) float (c) byte (d) None of the mentioned Which of these interfaces is not a member of Java. io package? (a) DataInput (c) ObjectFilter (b) ObjectInput (d) FileFilter Which of the following is a method of ObjectOutput interface used to finalize the output state so that any buffer is cleared? (a) clear() (c) fflush() (b) flush() (d) close()