62 Javanotes 9.0, Quiz on Chapter 11
Quiz on Chapter 11
Question 1:
In Java, input/output is
done using I/O streams. I/O streams are an abstraction. Explain what this means
and why it is important.
Question 2:
Java has two types of I/O
stream: character streams and byte streams. Why? What is the difference
between the two types of streams?
Question 3:
What is a file? Why are files necessary?
Question 4:
What is the point of the
following statement?
out = new PrintWriter( new FileWriter("data.dat") );
Why would you need a statement that involves two different stream classes,
PrintWriter and FileWriter?
Question 5:
The package java.io
includes a class named URL. What does an object of type URL
represent, and how is it used?
Question 6:
What is the purpose of the FileChooser
class?
Question 7:
Explain what is meant by the
client / server model of network communication.
Question 8:
What is a socket?
Question 9:
What is a ServerSocket and how is it used?
Question 10:
What is meant by an element in an XML document?
Question 11:
What is it about XML that makes it suitable for representing
almost any type of data?
Question 12:
Write a complete program
that will display the first ten lines from a text file. The lines should be
written to standard output, System.out. The file name is given as the
command-line argument args[0]. You can assume that the file contains
at least ten lines. Don’t bother to make the program robust. Do not use
TextIO to process the file; read from the file using
methods covered in this chapter.