Question 1

The control variable of a counter-controlled loop should be declared as ________to prevent errors.

Accepted Answer

A)  int 
B)  float 
C)  double 
D)  Any of the above. 
A)  int 
B)  float 
C)  double 
D)  Any of the above. A

Question 2

The first statement in every paintComponent method should be a call to ________.

Accepted Answer

A)  super 
B)  super.paintComponent 
C)  clear 
D)  update 
A)  super 
B)  super.paintComponent 
C)  clear 
D)  update B

Question 3

Which of the following statements about the break statement is false?

Accepted Answer

A)  The break statement is used to exit a repetition structure early and continue execution after the loop. 
B)  A break statement can only break out of an immediately enclosing while, for, do…while or switch statement. 
C)  The break statement, when executed in a while, for or do…while, skips the remaining statements in the loop body and proceeds with the next iteration of the loop. 
D)  Common uses of the break statement are to escape early from a loop or to skip the remainder of a switch. 
A)  The break statement is used to exit a repetition structure early and continue execution after the loop. 
B)  A break statement can only break out of an immediately enclosing while, for, do…while or switch statement. 
C)  The break statement, when executed in a while, for or do…while, skips the remaining statements in the loop body and proceeds with the next iteration of the loop. 
D)  Common uses of the break statement are to escape early from a loop or to skip the remainder of a switch. C

Question 4

Which of the following can be used in a switch statement in the expression after keyword case?
A. a constant integral expression.
B. a character constant.
C.a String
D.an enumeration constant.

Accepted Answer

A)  A and B. 
B)  A and C. 
C)  B and C. 
D)  All. 
A)  A and B. 
B)  A and C. 
C)  B and C. 
D)  All.

Question 5

Which of the following for-loop headers results in equivalent numbers of iterations:
A. for (int q = 1; q = 0; q--)
C.for (int q = 99; q > 0; q -= 9)
D. for (int q = 990; q > 0; q -= 90)

Accepted Answer

A)  A and B. 
B)  C and D. 
C)  A and B have equivalent iterations and C and D have equivalent iterations. 
D)  None of the loops have equivalent iterations. 
A)  A and B. 
B)  C and D. 
C)  A and B have equivalent iterations and C and D have equivalent iterations. 
D)  None of the loops have equivalent iterations.

Question 6

Which expression is equivalent to if (!(grade == sentinelValue))?

Accepted Answer

A)  if (grade !== sentinelValue) 
B)  if (grade != sentinelValue) 
C)  ! if (grade == sentinelValue) 
D)  ! if (grade !== sentinelValue) 
A)  if (grade !== sentinelValue) 
B)  if (grade != sentinelValue) 
C)  ! if (grade == sentinelValue) 
D)  ! if (grade !== sentinelValue)

Question 7

Method drawOval's arguments specify ________.

Accepted Answer

A)  the upper-left and upper-right corners of the oval. 
B)  the upper-left corner, scale and size of the oval. 
C)  the position and size of the bounding rectangle for the oval. 
D)  the position and size of the bounding cycle for the oval. 
A)  the upper-left and upper-right corners of the oval. 
B)  the upper-left corner, scale and size of the oval. 
C)  the position and size of the bounding rectangle for the oval. 
D)  the position and size of the bounding cycle for the oval.

Question 8

Which of the following statements about a do…while repetition statement is true?

Accepted Answer

A)  The body of a do…while loop is executed only if the terminating condition is true. 
B)  The body of a do…while loop is executed only once. 
C)  The body of a do…while loop is always executed at least once. 
D)  None of the above. 
A)  The body of a do…while loop is executed only if the terminating condition is true. 
B)  The body of a do…while loop is executed only once. 
C)  The body of a do…while loop is always executed at least once. 
D)  None of the above.

Question 9

Which of the following is not a type of repetition statement in Java?

Accepted Answer

A)  while statement. 
B)  do…while statement. 
C)  for statement. 
D)  loop statement. 
A)  while statement. 
B)  do…while statement. 
C)  for statement. 
D)  loop statement.

Question 10

Which case of the following would warrant using the boolean logical inclusive OR (|) rather than the conditional OR (||)?

Accepted Answer

A)  Testing if two conditions are both true. 
B)  Testing if at least one of two conditions is true. 
C)  Testing if at least one of two conditions is true when the right operand has a required side effect. 
D)  Testing if at least one of two conditions is true when the left operand has a required side effect. 
A)  Testing if two conditions are both true. 
B)  Testing if at least one of two conditions is true. 
C)  Testing if at least one of two conditions is true when the right operand has a required side effect. 
D)  Testing if at least one of two conditions is true when the left operand has a required side effect.

Question 11

Which statement prints the floating-point value 123.456 right justified with a field width of 10?

Accepted Answer

A)  System.out.printf("%d10.3", 123.456); 
B)  System.out.printf("%10.3d", 123.456); 
C)  System.out.printf("%f10.3", 123.456); 
D)  System.out.printf("%10.3f", 123.456); 
A)  System.out.printf("%d10.3", 123.456); 
B)  System.out.printf("%10.3d", 123.456); 
C)  System.out.printf("%f10.3", 123.456); 
D)  System.out.printf("%10.3f", 123.456);

Question 12

Consider the following two Java code segments:
Segment 1 Segment 2
Int i = 0;
For (int i = 0; i <= 20; i++)
While (i < 20) {
{ System.out.println(i);
I++; }
System.out.println(i);
}
Which of the following statements are true?

Accepted Answer

A)  The output from these segments is not the same. 
B)  The scope of the control variable i is different for the two segments. 
C)  Both (a) and (b) are true. 
D)  Neither (a) nor (b) is true. 
A)  The output from these segments is not the same. 
B)  The scope of the control variable i is different for the two segments. 
C)  Both (a) and (b) are true. 
D)  Neither (a) nor (b) is true.

Question 13

Counter-controlled repetition requires

Accepted Answer

A)  A control variable and initial value. 
B)  A control variable increment (or decrement). 
C)  A condition that tests for the final value of the control variable. 
D)  All of the above. 
A)  A control variable and initial value. 
B)  A control variable increment (or decrement). 
C)  A condition that tests for the final value of the control variable. 
D)  All of the above.

Question 14

Which of the following will count down from 10 to 1 correctly?

Accepted Answer

A)  for (int j = 10; j  1; j--) 
D)  for (int j = 10; j >= 1; j--) 
A)  for (int j = 10; j  1; j--) 
D)  for (int j = 10; j >= 1; j--)

Question 15

Which of the following is equivalent to this code segment?
Int total = 0;
For (int i = 0; i <= 20; i += 2)
Total += i;

Accepted Answer

A)  int total = 0; for (int i = 20; i < 0; i += 1)
Total += i; 
B)  int total = 0; for (int i = 0; i <= 20; total += i, i += 2); 
C)  int total = 0; for (int i = 0, i <= 20, total += i; i += 2); 
D)  int total = 0; for (int i = 2; i < 20; total += i, i += 2); 
A)  int total = 0; for (int i = 20; i < 0; i += 1)
Total += i; 
B)  int total = 0; for (int i = 0; i <= 20; total += i, i += 2); 
C)  int total = 0; for (int i = 0, i <= 20, total += i; i += 2); 
D)  int total = 0; for (int i = 2; i < 20; total += i, i += 2);

Question 16

For the code segment below:
Switch(q)
{
Case 1:
System.out.println("apple");
Break;
Case 2:
System.out.println("orange");
Break;
Case 3:
System.out.println("banana");
Break;
Case 4:
System.out.println("pear");
Case 5:
System.out.println("grapes");
Default:
System.out.println("kiwi");
}
Which of the following values for q will result in kiwi being included in the output?

Accepted Answer

A)  2. 
B)  Any integer less than 1 and greater than or equal to 4. 
C)  1. 
D)  3. 
A)  2. 
B)  Any integer less than 1 and greater than or equal to 4. 
C)  1. 
D)  3.

Question 17

For the two code segments below:
Segment A
Int q = 5;
Switch(q)
{
Case 1:
System.out.println(1);
Case 2:
System.out.println(2);
Case 3:
System.out.println(3);
Case 4:
System.out.println(4);
Case 5:
System.out.println(5);
Default:
System.out.println("default");
}
Segment B
Q = 4;
Switch(q)
{
Case 1:
System.out.println(1);
Case 2:
System.out.println(2);
Case 3:
System.out.println(3);
Case 4:
System.out.println(4);
Case 5:
System.out.println(5);
Default:
System.out.println("default");
}
Which of the following statements is true?

Accepted Answer

A)  The output for Segment A is: default 
B)  The output for Segment B is: 4 
C)  The output for Segment B is: 45default 
D)  The output for Segment A is: 5
Default 
A)  The output for Segment A is: default 
B)  The output for Segment B is: 4 
C)  The output for Segment B is: 45default 
D)  The output for Segment A is: 5
Default

Question 18

Consider the code segment below.
If (gender == 1)
{
If (age >= 65)
++seniorFemales;
}
This segment is equivalent to which of the following?

Accepted Answer

A)  if (gender == 1 || age >= 65) ++seniorFemales; 
B)  if (gender == 1 && age >= 65) ++seniorFemales; 
C)  if (gender == 1 AND age >= 65) ++seniorFemales; 
D)  if (gender == 1 OR age >= 65) ++seniorFemales; 
A)  if (gender == 1 || age >= 65) ++seniorFemales; 
B)  if (gender == 1 && age >= 65) ++seniorFemales; 
C)  if (gender == 1 AND age >= 65) ++seniorFemales; 
D)  if (gender == 1 OR age >= 65) ++seniorFemales;

Question 19

Suppose variable gender contains MALE and age equals 60, how is the expression
(gender == FEMALE) && (age >= 65)
Evaluated?

Accepted Answer

A)  The condition (gender == FEMAL
E)  is evaluated first and the evaluation stops immediately. 
B)  The condition (age >= 65) is evaluated first and the evaluation stops immediately. 
C)  Both conditions are evaluated, from left to right. 
D)  Both conditions are evaluated, from right to left. 
A)  The condition (gender == FEMAL
E)  is evaluated first and the evaluation stops immediately. 
B)  The condition (age >= 65) is evaluated first and the evaluation stops immediately. 
C)  Both conditions are evaluated, from left to right. 
D)  Both conditions are evaluated, from right to left.

Question 20

Which of the following statements about the continue statement is true?

Accepted Answer

A)  The continue statement is used to exit a repetition structure early and continue execution after the loop. 
B)  The continue statement is used to continue after a switch statement. 
C)  The continue statement does not alter the flow of control. 
D)  A continue statement proceeds with the next iteration of the immediately enclosing while, for, do…while statement. 
A)  The continue statement is used to exit a repetition structure early and continue execution after the loop. 
B)  The continue statement is used to continue after a switch statement. 
C)  The continue statement does not alter the flow of control. 
D)  A continue statement proceeds with the next iteration of the immediately enclosing while, for, do…while statement.

Exam 4: Control Statements

The control variable of a counter-controlled loop should be declared as ________to prevent errors.

The first statement in every paintComponent method should be a call to ________.

Which of the following statements about the break statement is false?

Which of the following can be used in a switch statement in the expression after keyword case? A. a constant integral expression. B. a character constant. C.a String D.an enumeration constant.

Which of the following for-loop headers results in equivalent numbers of iterations: A. for (int q = 1; q <= 100; q++) B. for (int q = 100; q >= 0; q--) C.for (int q = 99; q > 0; q -= 9) D. for (int q = 990; q > 0; q -= 90)

Which expression is equivalent to if (!(grade == sentinelValue))?

Method drawOval's arguments specify ________.

Which of the following statements about a do…while repetition statement is true?

Which of the following is not a type of repetition statement in Java?

Which case of the following would warrant using the boolean logical inclusive OR (|) rather than the conditional OR (||)?

Which statement prints the floating-point value 123.456 right justified with a field width of 10?

Consider the following two Java code segments: Segment 1 Segment 2 Int i = 0; For (int i = 0; i <= 20; i++) While (i < 20) { { System.out.println(i); I++; } System.out.println(i); } Which of the following statements are true?

Counter-controlled repetition requires

Which of the following will count down from 10 to 1 correctly?

Which of the following is equivalent to this code segment? Int total = 0; For (int i = 0; i <= 20; i += 2) Total += i;

Consider the code segment below. If (gender == 1) { If (age >= 65) ++seniorFemales; } This segment is equivalent to which of the following?

Suppose variable gender contains MALE and age equals 60, how is the expression (gender == FEMALE) && (age >= 65) Evaluated?

Which of the following statements about the continue statement is true?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Methods

Arrays and Arraylists

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Graphics and Java 2D

Fundamentals of Characters and Strings

Files, Streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

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