BCS2233 Contoh Ujian 1 Object Oriented Programming.

A.  Response to the following statements by circling either T (TRUE) or F (FALSE). [10M]

        I.            1. Java enables users to develop and deploy applications on the Internet for servers, desktop computers, and small hand-held devices.( T / F)

   2. Java is one of language that support object oriented programming. ( T / F)

 3. Reserved words or keywords are words that have a specific meaning to the compiler and cannot be used for other purposes in the program. ( T / F)

4. System.out.println is one of the pre-defined methods in Java. ( T / F)


  5. An identifier is a sequence of characters that consist of letters, digits, underscores (_), and dollar signs ($).( T / F)

B. Match the following Statement / Name to it descriptions.

No	Statements		Description
I.	x = 1;		Constants
II.	int x = 1;		Addition
III.	double radius;		Declaring and Initializing
IV.	final int SIZE = 3;		Multiplication
V.	+		Assignment Statements
VI.	*		Remainder
VII.	%		Declaring Variables

C. Answer the following questions

         I.            What is debugging? [2 marks]

       II.            What is the difference between a constant and a variable? [2 marks]

  

D. Which of the following are invalid identifiers, why? [7 marks]

                     I.            one

                   II.            hello_there

                 III.            hello,there

                 IV.            my    Window

                   V.            JAVA

                 VI.            1234

               VII.            acct122 

E. Evaluate the following expressions: [4 marks]

                    I.            10 + 2 / 2

                  II.            3 * 3 + 3 % 2

                III.            3 + 2 / 5 + -2 * 4

                IV.            2 * (1 + -(3/4) / 2) * (2 - 6 % 3)

F. (Computing the volume of a cylinder) Write an algorithm and a Java program that reads in the radius and length of a cylinder and computes its volume using the following formulas: [20 marks]

Area	= radius * radius * p
volume	= area * length

G. (Finding the largest) Write an algorithm and a java  program that input ten integers and find the largest. [20 marks]