Chapter.5 Test Bank Docx Methods

Starting Out with Java: From Control Structures through Objects 7e (Gaddis)

Chapter 5 Methods

TRUE/FALSE

1. Methods are commonly used to break a problem into small manageable pieces.

2. Two general categories of methods are void methods and value-returning methods.

3. In the method header, the method modifier public means that the method belongs to the class, not a specific object.

4. Constants, variables, and the values of expressions may be passed as arguments to a method.

5. A parameter variable's scope is the method in which the parameter is declared.

6. You must have a return statement in a value-returning method.

7. Any method that calls a method with a throws clause in its header must either handle the potential exception or have the same throws clause.

8. In the method header the static method modifier means the method is available to code outside the class.

9. Only constants and variables may be passed as arguments to methods.

10. No statement outside the method in which a parameter variable is declared can access the parameter by its name.

11. The expression in a return statement can be any expression that has a value.

12. A value-returning method can return a reference to a non-primitive type.

MULTIPLE CHOICE

1. Methods are commonly used to:

2. Which type of method performs a task and sends a value back to the code that called it?

3. In the following code, System.out.println(num) is an example of __________.

double num = 5.4;

System.out.println(num);

num = 0.0;

4. To create a method, you must write its __________.

5. In the header, the method name is always followed by __________.

6. A __________ is a part of a method that contains a collection of statements that are performed when the method is executed.

7. Which of the following is not a part of a method call?

8. If method A calls method B, and method B calls method C, and method C calls method D, when method D finishes, what happens?

9. Values that are sent into a method are called __________.

10. When an argument is passed to a method __________.

11. Given the following method header, which of these method calls is incorrect?

public void displayValue(int x, int y);

12. Given the following method header, which of these method calls is incorrect?

public void displayValue(double x, int y);

13. Given the following method, which of these method calls is valid?

public static void showProduct (int num1, double num2)

{

int product;

product = num1 * (int)num2;

System.out.println("The product is " + product);

}

14. Given the following method, which of these method calls is valid?

public static void showProduct (double num1, int num2)

{

double product;

product = num1 * num2;

System.out.println("The product is " + product);

}

15. When an object, such as a String, is passed as an argument it is __________.

16. All @param tags in a method's documentation must __________.

17. In a @return tag statement the description __________.

18. A method

19. A special variable that holds a value being passed into a method is called a(n) __________.

20. When you pass an argument to a method you should be sure that the argument's type is compatible with __________.

21. In a general sense, a method is __________.

22. Which of the following is not part of a method header?

23. A __________ type of method performs a task and then terminates.

24. When a method tests an argument and returns a true or false value, it should return __________.

25. A parameter variable's scope is __________.

26. The lifetime of a method's local variable is __________.

27. The header of a value-returning method must specify __________.

28. You should always document a method by writing comments that appear __________.

29. When an argument value is passed to a method, the receiving parameter variable is __________.

30. If you attempt to use a local variable before it has been given a value, __________.

31. Values stored in local variables __________.

32. Local variables can be initialized with __________.

33. The process of breaking a problem down into smaller pieces is sometimes called __________.

34. A value-returning method must specify __________ as its return type in the method header.

35. What will be returned from the following method?

public static double methodA()

{

double a = 8.5 + 9.5;

return a;

}

36. What will be returned from the following method?

public static int methodA()

{

double a = 8.5 + 9.5;

return a;

}

37. In the following code, Integer.parseInt(str) is an example of __________.

int num;

string str = "555";

num = Integer.parseInt(str) + 5;

38. What will be the result after the following code executes?

int num;

string str = "555";

num = Integer.parseInt(string str) + 5;

39. When writing documentation comments for a method, you can provide a description of each parameter by using a __________.

40. To document the return value of a method you can use a __________.

41. Assume that the following method header is for a method in class A.

public void displayValue(int value)

Assume that the following code segments appear in another method, also in class A. Which contains a legal call to the displayValue method?

MULTIPLE RESPONSE

1. Select all that apply. Which of the following are benefits of using methods in programming?

2. Select all that apply. Local variables __________.

3. Select all that apply. Any method that calls a method with a throws clause in its header must __________.

4. Select all that apply. Which of the following types of values can be passed to a method that has an int parameter variable?