QUESTION 11

Which of the following statements enables you to write output to a text file?

		PrintWriter out = new PrintWriter();
		PrintWriter out = new PrintWriter("output.txt");
		FileReader reader = new FileReader("input.txt");
		Scanner in = new Scanner(reader);

QUESTION 12

Which of the following cannot be serialized?

I ArrayList

II String

III Integer

		I
		II and III
		III
		All can be serialized

QUESTION 13

Which method in the RandomAccessFile class provides for random access?

		move
		seek
		goto
		offset

QUESTION 14

Which code moves the file pointer to the middle of a RandomAccessFile object, file?

		file.seek(file.length() / 2)
		file.seek(file.length())
		file.seek(0L)
		file.seek(file.getFilePointer() / 2)

QUESTION 15

Which is an advantage of storing numbers in binary format?

I fast access

II less storage needed

III easy to read in a text editor

		I
		III
		I and II
		I and III

QUESTION 16

A file pointer is a position in a random access file. Because files can be very large,

the file pointer is of type _______.

		double
		byte
		int
		long

QUESTION 17

Which is not a method in the RandomAccessFile class?

		getFilePointer
		seek
		scan
		length

QUESTION 18

If you want to process text data from a file, which keyword do you look for in classes that specialize in doing that?

		text
		serializable
		binary
		reader

QUESTION 19

Caesar cipher uses a shift of each character by a key with a value between 1 and 255. An a with a shift equal to 3 becomes a d. A z would become a c, wrapping around the alphabet.Which key should you use to encrypt picture into mfzqrob?

		3
		19
		-3
		-19

QUESTION 20

How many bytes does the read method in the InputStream class actually return to the program call?

		1
		2
		4
		8