ITE6104 Computer Programming 2 ( Final Exam )

ITE6104 Computer Programming 2 ( Final Exam )

 

Question 1

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What is the extension name of a Java Source code?

Select one:

a.

j

b.

class

c.

java

d.

None of the choices

e.

javac

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Question 2

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What is the name of this method: int test(){return 1;} ?

Select one:

a.

int

b.

7

c.

6

d.

test

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Question 3

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What is the length of the array: int[] intArray = { 1, 2, 3, 5, 6, 7 };

Select one:

a.

7

b.

6

c.

4

d.

5

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Question 4

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The Java feature, "write once, run anywhere", is termed as

Select one:

a.

Robust

b.

High Performance

c.

Object Oriented

d.

Platform independent

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Question 5

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Which of the following is true about Runtime errors

Select one:

a.

All of the choices

b.

Runtime errors occur when there is a design flaw in your program

c.

Runtime errors occur during run-time.

d.

Runtime errors occur after compilation.

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Question 6

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What is the function of JVM?

Select one:

a.

Interpreting bytecode

b.

Generating bytecode

c.

Reading bytecode

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Question 7

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What is the correct statement to compile Java program in command line?

Select one:

a.

java HelloWorld.java

b.

javac HelloWorld.java

c.

 java HelloWorld

d.

javac HelloWorld

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Question 8

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Which of the following is a valid nexDouble() return value?

Select one:

a.

12.0

b.

3.1416

c.

double value

d.

floating-point literal

e.

All of the choices

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Question 9

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What will be the output if you execute this code:

int a[] = new int[1];

System.out.println(a[1]);

Select one:

a.

It will display nothing.

b.

It will produce an exception.

c.

It will display “a[1]”.

d.

It will display the value of a[1].

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Question 10

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What was the initial name of the Java programming language?

Select one:

a.

Oak

b.

NetBeans

c.

C

d.

Javad

e.

None of the choices

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Question 11

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Which of the following shows Overloading method? 

Select one:

a.

void test(){} void test(){}

b.

All of the Choices

c.

void test(int x){} void test(double x){}

d.

. void test(int x){} void test(int y){}

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Question 12

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What did java generates after compiling the java source code?

Select one:

a.

Byte Code

b.

Class Code

c.

None of the choices

d.

Image file

e.

Executable file

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Question 13

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Which of the following class declaration is not allowed to be inherited?

Select one:

a.

class Person{}

b.

public final class Person {}

c.

public abstract class Person {}

d.

public class Person {}

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Question 14

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What will be the output if you execute this code?

do{

System.out.println("Hello World!");

}

while(true);

Select one:

a.

Do nothing

b.

print "Hello World"

c.

print "Hello World" infinitely

d.

The code will not run because of syntax error

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Question 15

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Which of the following is a valid identifier?

Select one:

a.

public

b.

static

c.

name

d.

true

e.

None of the choices

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Question 16

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The feature of Java which makes it possible to execute several tasks simultaneously.

Select one:

a.

Multithreaded

b.

Platform independent

c.

None of the choices

d.

Robust

e.

Code Security

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Question 17

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Which of the following scenarios where an exception may occur?

Select one:

a.

All of the choices

b.

A user has entered an invalid data.

c.

A network connection has been lost in the middle of communications or the JVM has run out of memory.

d.

A file that needs to be opened cannot be found.

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Question 18

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Which of the following is the correct syntax to define a method?

Select one:

a.

<packageName> package;

b.

package <packageName>;

c.

<modifier> package <packageName>;

d.

<packageName>;

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Question 19

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Which of the following is a valid editor for java source code?

Select one:

a.

NetBeans

b.

eclipse

c.

All of the choices

d.

BlueJ

e.

Notepad

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Question 20

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It is the method of hiding certain elements of the implementation of a certain class?

Select one:

a.

Encapsulation

b.

Class

c.

Object Oriented

d.

Object

e.

None of the choices

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Question 21

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Which of the following is true about syntax errors:

Select one:

a.

All of the above.

b.

Incorrect capitalization leads to syntax error.

c.

Syntax errors are usually typing errors.

d.

You will have syntax errors if you misspell the Java command.

e.

None of the choices

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Question 22

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It is used to access the instance variables shadowed by the parameters.

Select one:

a.

mutator method

b.

accessor method

c.

method

d.

this

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Question 23

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what will be the output if you execute this code?

int x=2;

switch(x){

case 1:

            System.out.print(“1”);

case 2:

            System.out.print(“1”);

case 3:

            System.out.print(“1”);

default:

            System.out.print(“1”);

}

Select one:

a.

display 1234

b.

display 1

c.

display 111

d.

display 1111

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Question 24

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What do you call a blueprint of an object?

Select one:

a.

Class

b.

Object

c.

Method

d.

one of the choice

e.

Constructor

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Question 25

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What is the return value of this method: int test(){return 1;} ?

Select one:

a.

1

b.

int

c.

return 1

d.

test

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Question 26

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What is the index number of the last element of an array with 20 elements?

Select one:

a.

None of the choices

b.

19

c.

21

d.

0

e.

20

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Question 27

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What is the output of the code snippet below:

            int[] intArray = { 1, 2, 3, 5, 6, 7 };

            for(int x = intArray.length-1; x>=0; x--){

            System.out.print(intArray[x]);

}

 

Select one:

a.

12356

b.

765321

c.

123567

d.

The given code is not valid

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Question 28

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From the array int[] intArray = { 1, 2, 3, 5, 6, 7 };, what is the value of intArray[2]?

Select one:

a.

2

b.

1

c.

3

d.

4

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Question 29

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Which of the following does not return numeric value?

Select one:

a.

nextLong()

b.

nextDouble()

c.

nextShort()

d.

None of the choices

e.

nextInt()

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Question 30

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What is the maximum index of the array:

int[] intArray = { 1, 2, 3, 5, 6, 7 };

Select one:

a.

4

b.

5

c.

7

d.

6

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Question 31

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Which of the following is not a java keyword?

Select one:

a.

None of the choices

b.

goto

c.

name

d.

else

e.

if

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Question 32

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Which of the following is a valid statement to accept int input? Let us assume that we have declared scan as Scanner.

Select one:

a.

int num = scan.nextLong();

 

b.

int num = scan.nextInt();

 

c.

short num = scan.nextShort();

 

d.

int num = scan.getInt();

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Question 33

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Which of the following is true about constructor?

Select one:

a.

Constructors have the same name as the class

b.

Constructors does not have any return value

c.

All of the choices

d.

It can only be called by using the new operator during class instantiation.

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Question 34

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What is floating-point literal?

Select one:

a.

Can be express in scientific notation.

b.

An integer literal with decimal point.

c.

It could be double or float value.

d.

All of the choices

e.

By default it is double type.

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Question 35

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What is the correct statement to run Java program in command line?

Select one:

a.

javac HelloWorld

b.

java HelloWorld

c.

java HelloWorld.java

d.

javac HelloWorld.java

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Question 36

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What is the output of the code snippet below:

            void main(){test(1.0);

             test(1);}

            void test(double x){

            System.out.print(x);

             void test(int x){System.out.print(x);}

Select one:

a.

11

b.

1.01.0

c.

1.0

d.

1.01

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Question 37

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What will be the value of x after executing this code for(int x=0; x<=11; x++) {} is run?

Select one:

a.

12

b.

10

c.

11

d.

1

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Question 38

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What will be the value of x after you execute this statement

int z=0;  

for(int x=0; x<10; x++)

for(int y=0; y<x; y++) z*=(x*y);

Select one:

a.

1

b.

512

c.

236

d.

None of the Choice

e.

128

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Question 39

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What keyword is used to perform class inheritance?

Select one:

a.

implements

b.

inherits

c.

derives

d.

None of the choices

e.

extends

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Question 40

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Which of the following shows a valid Overloading method? 

Select one:

a.

void test(){} void test(){}

b.

void test(char x, int y){} void test(int x, char y){}

c.

All of the Choices

d.

void test(int x){} void test(int y){}

e.

None of the choices

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Question 41

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Which of the following is not a valid Float value?

Select one:

a.

3.4028235E+38F

b.

all of the choices

c.

1.2345E+3

d.

2.23

e.

12345678910F

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Question 42

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What is the result if we execute this: “a”.equals(“a”);?

Select one:

a.

true

b.

false

c.

“a”

d.

The code is not valid

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Question 43

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It used to read values from class variables?

Select one:

a.

Method

b.

Accessor

c.

Instance Variable

d.

Mutator

e.

None of the choices

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Question 44

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Which of the following is not a primitive data type?

Select one:

a.

long

b.

short

c.

byte

d.

none of the choices

e.

String

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Question 45

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Which of the following is a valid multidimensional array?

Select one:

a.

int[][] intArray;

b.

All of the choice

c.

int[][][] intArray;

d.

int[][][][] intArray;

e.

int intArray[][][];