JAVA CHAPTER 5 STUDY GUIDE
EXAM QUESTIONS WITH
COMPLETE SOLUTIONS
Breaking a program down into small manageable methods:
A) makes problems more easily solved
B) allows for code reuse
C) simplifies programs
D) all of the above - Answer- Answer: D
This type of method performs a task and then terminates.
A) value-returning
B) void
C) local
D) simple - Answer- Answer: B
In the following code, Integer.parseInt(str), is an example of:
int num;
string str = "555";
num = Integer.parseInt(str) + 5;
A) a value-returning method
B) a void method
C) a local variable
D) a complex method - Answer- Answer: A
Which of the following is NOT a part of the method header?
A) return type
B) method name
C) parentheses
D) semicolon - Answer- Answer: D
Which of the following is included in a method call?
A) return type
B) method modifiers
C) parentheses
D) return variable - Answer- Answer: C
You should always document a method by writing comments that appear:
A) just before the method's definition
B) just after the method's definition
C) at the end of the file
, D) only if the method is more than five lines long - Answer- Answer: A
When an argument value is passed to a method, the receiving parameter variable is:
A) declared within the body of the method
B) declared in the method header inside the parentheses
C) declared in the calling method
D) uses the declaration of the argument - Answer- Answer: B
If you attempt to use a local variable before it has been given a value:
A) a compiler error will occur
B) the local variable will always contain the value 0
C) the results will be unpredictable
D) the local variable will be ignored - Answer- Answer: A
What will be the result of the following code?
int num;
string str = "555";
num = Integer.parseInt(string str) + 5;
A) num will be set to 560.
B) str will have a value of "560".
C) The last line of code will cause an error.
D) Neither num or str will be changed. - Answer- Answer: C
Given the following method header, which of the method calls would be an error?
public void displayValues(double x, int y)
A) displayValue(a,b); // where a is a long and b is a byte
B) displayValue(a,b); // where a is an int and b is a byte
C) displayValue(a,b); // where a is a short and b is a long
D) They would all give an error. - Answer- Answer: C
Which of the following would be a valid method call for the following method?
public static void showProduct(double num1, int num2)
{
double product;
product = num1 * num2;
System.out.println("The product is " +
product);
}
A) showProduct("5", "40");
B) showProduct(10.0, 4.6);
C) showProduct(10, 4.5);
D) showProduct(3.3, 55); - Answer- Answer: D
When writing the documentation comments for a method, you can provide a description
of each
EXAM QUESTIONS WITH
COMPLETE SOLUTIONS
Breaking a program down into small manageable methods:
A) makes problems more easily solved
B) allows for code reuse
C) simplifies programs
D) all of the above - Answer- Answer: D
This type of method performs a task and then terminates.
A) value-returning
B) void
C) local
D) simple - Answer- Answer: B
In the following code, Integer.parseInt(str), is an example of:
int num;
string str = "555";
num = Integer.parseInt(str) + 5;
A) a value-returning method
B) a void method
C) a local variable
D) a complex method - Answer- Answer: A
Which of the following is NOT a part of the method header?
A) return type
B) method name
C) parentheses
D) semicolon - Answer- Answer: D
Which of the following is included in a method call?
A) return type
B) method modifiers
C) parentheses
D) return variable - Answer- Answer: C
You should always document a method by writing comments that appear:
A) just before the method's definition
B) just after the method's definition
C) at the end of the file
, D) only if the method is more than five lines long - Answer- Answer: A
When an argument value is passed to a method, the receiving parameter variable is:
A) declared within the body of the method
B) declared in the method header inside the parentheses
C) declared in the calling method
D) uses the declaration of the argument - Answer- Answer: B
If you attempt to use a local variable before it has been given a value:
A) a compiler error will occur
B) the local variable will always contain the value 0
C) the results will be unpredictable
D) the local variable will be ignored - Answer- Answer: A
What will be the result of the following code?
int num;
string str = "555";
num = Integer.parseInt(string str) + 5;
A) num will be set to 560.
B) str will have a value of "560".
C) The last line of code will cause an error.
D) Neither num or str will be changed. - Answer- Answer: C
Given the following method header, which of the method calls would be an error?
public void displayValues(double x, int y)
A) displayValue(a,b); // where a is a long and b is a byte
B) displayValue(a,b); // where a is an int and b is a byte
C) displayValue(a,b); // where a is a short and b is a long
D) They would all give an error. - Answer- Answer: C
Which of the following would be a valid method call for the following method?
public static void showProduct(double num1, int num2)
{
double product;
product = num1 * num2;
System.out.println("The product is " +
product);
}
A) showProduct("5", "40");
B) showProduct(10.0, 4.6);
C) showProduct(10, 4.5);
D) showProduct(3.3, 55); - Answer- Answer: D
When writing the documentation comments for a method, you can provide a description
of each
