What will the value of x be after the following statements are executed? double a, b, c, x; a = 5; b = 3; c = 6; if ( a <= c ){

x = 1;

} else if ( c > b ) {

x = 2;

} else {

x = 3;

}

A

0

B

1

C

2

D

3

E

5

Question 2

What will the value of x be after the following statements are executed? double a, b, c, x; a = 5; b = 3; c = 6; if ( a <= c ) {

x = 1;

}

if ( c > b ) {

x = 2;

}

if ( x > b ) {

x = 3;

}

A

0

B

1

C

2

D

3

E

5

Question 3

Which of the following is NOT a Java relational operator?

A

=

B

>=

C	No answer text provided.

D

!=

E

>

Question 4

Which of the following is true?

When using == to compare reference variables, you are testing for "identity equality" -- that the two variables refer to the same object.

The .equals() method tests for "content equality" -- that the objects are considered equivalent to each other.

A

I

B

II

C	I & II are both true

D	Neither is true

Question 5

What symbols does Java use to create block statements (a 'block' of code)?

A

{ }

B

()

C

[ ]

D	No answer text provided.

Question 6

Which of the following operators may NOT be used with operands of type boolean?

A

&&

B

| |

C

!=

D

!

E	ALL of the above may be used with type boolean

Question 7

What is a common use for a variable of type boolean?

A	a question variable

B	a flag variable

C	a counter variable

D	a reference variable

Question 8

What is a common name for a method that returns type boolean?

A	a question method

B	a flag method

C	a predicate method

D

a mutator

Question 9

Which of the following data types is NOT valid for the switch expression in a switch instruction?

A

int

B

double

C

char

D	all three ARE valid

E	NONE of these is valid

Question 10

If a break statement is not included at the end of each action (alternative) in a switchinstruction, what is the result?

A	a syntax error

B	a run-time exception

C	no action will ever be executed

D	more than one action may be executed

E	no effect -- execution is unchanged

Question 11

The switch instruction is a more general-purpose (more versatile) tool than the ifinstruction.

A

True

B

False

Question 12

You are writing a program that will allow a user to enter a single word identifying her 'sign' in the Chinese zodiac (e.g. "Dog") and then show some information about that sign. Obviously a decision must be made in this program. Which selection structure(s) could you use?

A	if statements should be used

B	a switch statement should be used

C	either if statements or a switch statement could be used

Question 13

What numerical value for x will cause the following expression to evaluate to true. x > 5 || x < 9

A

x = 3

B

x = 7

C

x = 12

D	NO value of x -- all numerical values cause the expression to evaluate to false

E	ALL numerical values cause the expression to evaluate to true

Question 14

Which of the following is a legal Java expression?

A	2 <= n < 5

B	2 <= n && < 5

C	2 <= n && n < 5

D	2 <= n && !5

Question 15

Which of the following operators has the highest precedence?

A

| |

B	No answer text provided.

C

&&

D

>

E

%

Question 16

Which of the following is true in Java? I. Every else must have a preceding if. II. Every if must have a following else.

A

I.

B

II.

C	I & II are both true

D	Neither are true

Question 17

What kind of loop is a data validation loop?

A	a definite loop

B	an indefinite loop

Question 18

Which loop control structure can NOT be used if there are conditions under which the body of the loop should be executed zero times?

A

for

B

while

C	do...while

D	Any of the loop control structures can be used in this situation.

E	None of the above -- this situation is impossible to program.

Question 19

You know that a for loop is usually the best choice for a counting loop, but which other loop control structure(s) could possibly be used to create a counting loop?

A	a while loop

B	a do...while loop

C	any of the loop control structures can be used to create a counting loop

D	none of the above -- only a for loop can be used

Question 20

Consider the following class definition:

public class Woog{

public static void main (String[] a){

Fiddle f = new Fiddle();

...

}

}

How would you describe the relationship between Fiddle and Woog?

A	Fiddle is the client class. Woog is the supplier class.

B	Woog is the client class. Fiddle is the supplier class.