CSC 108 Midterm - Spring 1998 - Friday Section
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1. [10 marks]

Below is a Java program segment that begins with some variable
declarations and ends with a sequence of assignment statements.  Each
assignment statement attempts to give a new value to a variable.

To the right of each assignment statement, write the value assignmed to
the variable, and do not include a decimal point otherwise.  In
addition, put single quotes around characters, put double quotes around
strings, and clearly indicate whether or not a blank is included in the
string.  If the assignment statement would fail, write the word "Error"
and briefly explain what the error is to the right of the statement.

boolean b;
char c;
float f;
int i;
String s;

i = 2 + 3 * 5;

i = 7 % 3 + 1;

i = 4 / 2.0;

i = 5 * 2;

f = 2 * 3;

s = "Hi" + "There";

c = s.charAt (1);

b = s.startsWith ('H');

b = 10 > 2 + 3;

i = (int) 6.75;

b = i == 6 || 7;

2. [10 marks: 8 marks for part (a), 2 marks for part (b)]

(a) The Fly-By-Night Finance Company needs a program to keep track of
its customers.  Write a Java class called Customer with the instance
variables name (String), number (long) and balance (double).  Include a
constructor in the class to initialize these instance variables when
you instantiate an object of this class.  Also include a print method
in the class to print the name, number, and balance of the object.

(b) Write a brief Java program segment to instantiate an object called
new_customer of the Customer class and initialize its instance
variables name to "John Doe," number to 94523 and balance to 99.67.
Then call the print method associated with the object to print the
information associated with the object.

3. [10 marks]

Write a Java String method called reverse that accepts on String
argument word and returns a String that consists of the letters of the
argument word in reverse order.

For example, if the argument word is the String "computer", then
reverse should return the String "retupmoc".

Do NOT use the StringBuffer class method reverse.