Question 10.05 pts

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;

}

0

1

2

3

5

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Question 20.05 pts

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;

}

0

1

2

3

5

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Question 30.05 pts

Which of the following is NOT a Java relational operator?

=

>=

No answer text provided.

!=

>

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Question 40.05 pts

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.

I

II

I & II are both true

Neither is true

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Question 50.05 pts

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

{ }

()

[ ]

No answer text provided.

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Question 60.05 pts

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

&&

| |

!=

!

ALL of the above may be used with type boolean

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Question 70.05 pts

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

a question variable

a flag variable

a counter variable

a reference variable

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Question 80.05 pts

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

a question method

a flag method

a predicate method

a mutator

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Question 90.05 pts

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

int

double

char

all three ARE valid

NONE of these is valid

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Question 100.05 pts

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

a syntax error

a run-time exception

no action will ever be executed

more than one action may be executed

no effect -- execution is unchanged

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Question 110.05 pts

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

True

False

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Question 120.05 pts

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?

if statements should be used

a switch statement should be used

either if statements or a switch statement could be used

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Question 130.05 pts

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

x = 3

x = 7

x = 12

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

ALL numerical values cause the expression to evaluate to true

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Question 140.05 pts

Which of the following is a legal Java expression?

2 <= n < 5

2 <= n && < 5

2 <= n && n < 5

2 <= n && !5

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Question 150.05 pts

Which of the following operators has the highest precedence?

| |

No answer text provided.

&&

>

%

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Question 160.05 pts

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

I.

II.

I & II are both true

Neither are true

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Question 170.05 pts

What kind of loop is a data validation loop?

a definite loop

an indefinite loop

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Question 180.05 pts

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

for

while

do...while

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

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

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Question 190.05 pts

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 while loop

a do...while loop

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

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

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Question 200.05 pts

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?

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

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