Podcast
Questions and Answers
What is printed as a result of executing the following code segment? System.out.println("W"); System.out.println("X"); System.out.print("Y"); System.out.print("Z");
What is printed as a result of executing the following code segment? System.out.println("W"); System.out.println("X"); System.out.print("Y"); System.out.print("Z");
D. W X YZ
What is printed as a result of executing the following code segment? System.out.print("cat "); System.out.println("dog "); System.out.println("horse "); System.out.print("cow ");
What is printed as a result of executing the following code segment? System.out.print("cat "); System.out.println("dog "); System.out.println("horse "); System.out.print("cow ");
B. cat dog horse cow
What is printed as a result of executing the following code segment? System.out.print("Hello!"); System.out.println("How "); System.out.print("are "); System.out.print("you?");
What is printed as a result of executing the following code segment? System.out.print("Hello!"); System.out.println("How "); System.out.print("are "); System.out.print("you?");
D. Hello!How are you?
Which of the following changes can be made so that the following code segment produces the intended output? System.out.println(hello); // Line 1 System.out.print(world); // Line 2
Which of the following changes can be made so that the following code segment produces the intended output? System.out.println(hello); // Line 1 System.out.print(world); // Line 2
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Which change, if any, can be made so that the following code segment can output the intended result? System.out.print("Ready"); // Line 1 System.out.print("Set"); // Line 2 System.out.print("Go!"); // Line 3
Which change, if any, can be made so that the following code segment can output the intended result? System.out.print("Ready"); // Line 1 System.out.print("Set"); // Line 2 System.out.print("Go!"); // Line 3
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Which of the following code segments works as intended to print the word Hello?
Which of the following code segments works as intended to print the word Hello?
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Which statement correctly declares a variable that can store a temperature rounded to the nearest tenth of a degree?
Which statement correctly declares a variable that can store a temperature rounded to the nearest tenth of a degree?
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Which of the following is most appropriate to replace in the program to compute student percentages correctly? int pointsEarned; double percentage;
Which of the following is most appropriate to replace in the program to compute student percentages correctly? int pointsEarned; double percentage;
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Which of the following best describes the data types that should be used to replace x and y in the code segment x = 0.5; y = true;
Which of the following best describes the data types that should be used to replace x and y in the code segment x = 0.5; y = true;
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Which of the following can be used as a replacement for y in the code segment to print 94? int x = 3; y = ; x = 1 + 2 * y; System.out.print(x); System.out.println(y);
Which of the following can be used as a replacement for y in the code segment to print 94? int x = 3; y = ; x = 1 + 2 * y; System.out.print(x); System.out.println(y);
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Which of the following can be used to replace the code segment so that it computes the volume of a cylinder correctly?
Which of the following can be used to replace the code segment so that it computes the volume of a cylinder correctly?
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Which of the following replacements for top and bottom will cause an ArithmeticException to occur? int top = x - y; int bottom = y - x; System.out.print(top / bottom);
Which of the following replacements for top and bottom will cause an ArithmeticException to occur? int top = x - y; int bottom = y - x; System.out.print(top / bottom);
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What is the value of x when the code segment has been executed? int a = 1; int b = 2; int c = 3; int d = 4; double x = a + b * c % d;
What is the value of x when the code segment has been executed? int a = 1; int b = 2; int c = 3; int d = 4; double x = a + b * c % d;
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Which of the following arithmetic expressions evaluates to 1?
Which of the following arithmetic expressions evaluates to 1?
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What is printed as a result of executing the following code segment? int x = 10; int y = 20; System.out.print(y + x / y);
What is printed as a result of executing the following code segment? int x = 10; int y = 20; System.out.print(y + x / y);
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Study Notes
Output of Code Segments
- Code segment printing "W", "X", "YZ" results in:
- W
- X
- YZ
- Code segment with "cat ", "dog ", "horse ", "cow " produces:
- cat dog
- horse
- cow
- Code segment with "Hello!", "How ", "are ", "you?" gives:
- Hello!How
- are you?
Modifying Print Statements
- To fix a code segment that fails to produce the output "hello" and "world", change
printtoprintlnin the relevant line. - To print "Ready", "Set", "Go!" correctly, change
printtoprintlnon the first two lines.
Variable Declaration
- Correct declaration for temperature storage:
-
double patientTemp;
-
Calculating Percentages
- Appropriate data type replacement for storing total points and percentage:
-
int totalPoints; -
double percentage;
-
Data Type Usage
- x should be a double and y should be a boolean for proper compilation without errors.
Mathematical Expressions and Outputs
- To achieve the output "94" in a specific code segment, use:
- x + 1 as a replacement value.
- For cylinder volume calculation:
- All provided options (I, II, III) correctly compute the volume using proper formulas.
Exception Handling
- An
ArithmeticExceptionwill occur with the replacement for top and bottom:- Option II (where bottom evaluates to zero).
Example Calculations
- The value of x from the expression involving variables a, b, c, d, evaluated as:
- Result is 3.0.
- Arithmetic expressions giving a result of 1:
- Options II (2 / (5 % 3)) and III (2 / 5 + 1) are correct.
Expression Evaluations
- Output from the code segment involving x and y result in a specific sum based on arithmetic operations.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of Java output with these flashcards from the AP Computer Science A curriculum. Each card presents a code segment and asks for the expected output, helping to reinforce your programming skills.
