Question 1

Which loop control structure is used to create a data validation loop in the example in the additional reading on loops??

a while loop

a do...while loop

a for loop

Question 2

A loop that uses an exit sentinel or exit code is what kind of loop?

a definite loop

an indefinite loop

Question 3

What will be printed by the following code? int bart = 6; int marge = 2; int lisa = 20; for ( int homer = 5; homer > 0; homer-- ) {

if ( bart < lisa )

bart = bart + marge * homer;

} System.out.println( bart );

6

10

18

24

36

Question 4

What will be printed by the following code? int bit = 6; int mit = 2; int lit = 20; for ( int hit = 1; hit <= 5; hit++ ) {

if ( bit < lit )

bit += mit * hit;

} System.out.println( bit );

6

8

18

26

36

Question 5

In Question 4's program, which variable is an accumulator?

bit

hit

lit

mit

Question 6

In Question 4's program, which variable is the loop control variable?

bit

hit

lit

mit

Question 7

What will be printed by the following code? int x; for ( x = 2; x < 10; x = x * x )

System.out.print( x + " " );

System.out.println( "Final x = " + x );

2 4 6 8 Final x = 10

2 4 Final x = 4

2 4 Final x = 10

2 4 Final x = 16

None of the above

Question 8

What will be printed by the following code? int x; for (x = 11; x <= 15; x++) {

if (x % 2 == 0)

System.out.print("S ");

else

System.out.print("D ");

}

S D S D S

D S D S D

S S S S S

D D D D D

Question 9

What will be printed by the following code? (This code is DIFFERENT from the previous problem!) int x; for (x = 11; x <= 15; x++) {

if (x / 12 == 0)

System.out.print("S ");

else

System.out.print("D ");

}

D D D D D

S D D D D

S S D D D

S S S D D

D S S S S

Question 10

What will be printed by the following code? int x = 5; while ( x > 0 ) {

System.out.print( x + " " ); x -= 2;

} System.out.println( "Final x = " + x );

Final x = -1

1 Final x = -1

5 3 1 Final x = 1

5 3 1 Final x = 0

5 3 1 Final x = -1

Question 11

What will be printed by the following code? (This code is DIFFERENT from the previous problem!) int x = 5; while ( x < 0 ) {

System.out.print( x + " " ); x -= 2;

} System.out.println( "Final x = " + x );

Final x = 5

5 Final x = 0

5 3 1 Final x = -1

5 3 1 Final x = 0

5 3 1 Final x = -1

Question 12

What will be printed by the following code? int x = 5; do {

System.out.print( x + " " ); x -= 2;

} while ( x < 0 ); System.out.println( "Final x = " + x );

Final x = 5

5 Final x = 3

5 3 1 Final x = 1

5 3 1 Final x = 0

5 3 1 Final x = -1

Question 13

What sequence of characters marks the beginning of a JavaDoc comment?

/*

/**

//

None of the above

Question 14

Which of the following is a Javadoc tag?

@javadoc

@public

@param

All of the above

None of the above

Question 15

Which part of the following code will NOT be executed due to "short circuit evaluation"? String name = "Homer"; if ( name.length() > 4 || name.equals("Bart") ) {

System.out.println("Doh!");

} System.out.println("Done");

String name = "Homer";

name.length() > 4

name.equals("Bart ")

System.out.println("Doh!");

System.out.println("Done");

Question 16

The program below produces this output: Cougs! Go Cougs! Go Cougs! Go Cougs! The code demonstrates what kind of pattern, described in Chapter 5 in the text? String team = "Cougs!"; System.out.print(team); for ( int i = 0; i < 3; i++ ) {

System.out.print(" Go "); System.out.print(team);

} System.out.println();

fencepost

team spirit

indefinite loop

random number

assertion

Question 17

In which package is the File class located?

java.awt

java.io

java.lang

java.util

javax.swing

Question 18

An exception that must be "handled" -- either caught or specifically declared (using a throws clause) in the header of any method that might generate it -- is called what?

a handled exception

a serious exception

a runtime exception

a checked exception

a throws exception

Question 19

Which of the following is a boolean (or predicate) method in the Scanner class that can "look-ahead" and reveal some information about the next token available in the stream?

hasNext()

hasNextDouble()

hasNextInt()

hasNextBoolean()

All of the above

Question 20

In the code snippet below, which class is the client and which class is the supplier? public class Paddle {

public static void someMethod(){

Fiddle f = new Fiddle();

...

}

... }

Paddle is the client, Fiddle is the supplier

Fiddle is the client, Paddle is the supplier

Both Paddle and Fiddle are clients

Both Paddle and Fiddle are suppliers