Question 1

Which of the following is not a package in the Java API?

Accepted Answer

A) java.component 
B) java.awt 
C) javax.swing.event 
D) java.lang 
A) java.component 
B) java.awt 
C) javax.swing.event 
D) java.lang A

Question 2

Which of the following methods are overloaded with respect to one another?
Public int max (int a,int b){ … }
Public double max (double a,double b){ … }
Public int max (int a,int b,int c){ … }
Public double max (double a,double b,double c){ … }

Accepted Answer

A) A and B are overloaded;C and D are overloaded. 
B) A and C are overloaded;B and D are overloaded. 
C) A,B and C are overloaded. 
D) All four methods are overloaded. 
A) A and B are overloaded;C and D are overloaded. 
B) A and C are overloaded;B and D are overloaded. 
C) A,B and C are overloaded. 
D) All four methods are overloaded. D

Question 3

Which operator can be used in string concatenation?

Accepted Answer

A) * 
B) += 
C) ++ 
D) =+ 
A) * 
B) += 
C) ++ 
D) =+ B

Question 4

Information is passed to a method in ________.

Accepted Answer

A) the method name 
B) that method's return 
C) the method body 
D) the arguments to the method 
A) the method name 
B) that method's return 
C) the method body 
D) the arguments to the method

Question 5

Identifiers in Java have ________ and ________ scopes?

Accepted Answer

A) method,class. 
B) class,block. 
C) block,statement. 
D) statement,file. 
A) method,class. 
B) class,block. 
C) block,statement. 
D) statement,file.

Question 6

The java.text package contains classes for manipulating all of the following items except ________.

Accepted Answer

A) classes 
B) numbers 
C) strings 
D) characters 
A) classes 
B) numbers 
C) strings 
D) characters

Question 7

Method calls cannot be distinguished by ________.

Accepted Answer

A) method name 
B) return type 
C) parameter lists 
D) method signature 
A) method name 
B) return type 
C) parameter lists 
D) method signature

Question 8

Stacks are known as ________ data structures.

Accepted Answer

A) FIFO. 
B) FILO. 
C) LIFO. 
D) LILO. 
A) FIFO. 
B) FILO. 
C) LIFO. 
D) LILO.

Question 9

Which of the following methods is not in the Math class?

Accepted Answer

A) ceil 
B) abs 
C) parseInt 
D) log 
A) ceil 
B) abs 
C) parseInt 
D) log

Question 10

Filled rectangles and filled circles are drawn using Graphics method ________ and ________.

Accepted Answer

A) fillRect,fillCircle 
B) filledRect,filledCircle 
C) fillRect,fillOval 
D) filledRect,filledOval 
A) fillRect,fillCircle 
B) filledRect,filledCircle 
C) fillRect,fillOval 
D) filledRect,filledOval

Question 11

Consider the following Java statements:
Int x = 9;
Double y = 5.3;
Result = calculateValue(x,y);
Which of the following statements is false?

Accepted Answer

A) A method is called with its name and parentheses. 
B) x and y are parameters. 
C) Copies of x and y are passed to the method calculateValue. 
D) x and y are arguments. 
A) A method is called with its name and parentheses. 
B) x and y are parameters. 
C) Copies of x and y are passed to the method calculateValue. 
D) x and y are arguments.

Question 12

Which of the following can be an argument to a method?

Accepted Answer

A) Constants. 
B) Variables. 
C) Expressions. 
D) All of the above. 
A) Constants. 
B) Variables. 
C) Expressions. 
D) All of the above.

Question 13

Overloaded methods always have the same _________.

Accepted Answer

A) method name 
B) return type 
C) number of parameters 
D) order of the parameters 
A) method name 
B) return type 
C) number of parameters 
D) order of the parameters

Question 14

A static method can ________.

Accepted Answer

A) call only other static methods of the same class directly 
B) manipulate only static fields in the same class directly 
C) be called using the class name and a dot (. ) 
D) All of the above. 
A) call only other static methods of the same class directly 
B) manipulate only static fields in the same class directly 
C) be called using the class name and a dot (. ) 
D) All of the above.

Question 15

Which statement below could be used to simulate the outputs of rolling a six-sided die? Suppose randomNumbers is a SecureRandom object.

Accepted Answer

A) 1 + randomNumbers.nextInt(6); 
B) 1 + randomNumbers.nextInt(2); 
C) 6 + randomNumbers.nextInt(1); 
D) 3 + randomNumbers.nextInt(3); 
A) 1 + randomNumbers.nextInt(6); 
B) 1 + randomNumbers.nextInt(2); 
C) 6 + randomNumbers.nextInt(1); 
D) 3 + randomNumbers.nextInt(3);

Question 16

Which of the following promotions of primitive types is not allowed to occur?

Accepted Answer

A) char to int. 
B) double to float. 
C) int to double. 
D) short to long. 
A) char to int. 
B) double to float. 
C) int to double. 
D) short to long.

Question 17

When an object is concatenated with a String,________.

Accepted Answer

A) a compilation error occurs 
B) a runtime error occurs 
C) the object's toString method is implicitly called to obtain the String representation of the object 
D) the object's class name is concatenated with the String 
A) a compilation error occurs 
B) a runtime error occurs 
C) the object's toString method is implicitly called to obtain the String representation of the object 
D) the object's class name is concatenated with the String

Question 18

If more method calls occur than can have their activation records stored on the program execution stack,an error known as a ________ occurs.

Accepted Answer

A) stack overflow. 
B) stack rewind. 
C) stack full. 
D) stack empty. 
A) stack overflow. 
B) stack rewind. 
C) stack full. 
D) stack empty.

Question 19

Method log takes the logarithm of its argument with respect to what base?

Accepted Answer

A) 10 
B) e 
C) 2 
D) pi 
A) 10 
B) e 
C) 2 
D) pi

Question 20

Java uses class ________ to represent colors using their RGB values.

Accepted Answer

A) Color 
B) Colors 
C) RGBColor 
D) RGBColors 
A) Color 
B) Colors 
C) RGBColor 
D) RGBColors

Exam 6: Methods: a Deeper Look

Which of the following is not a package in the Java API?

Which of the following methods are overloaded with respect to one another? Public int max (int a,int b){ … } Public double max (double a,double b){ … } Public int max (int a,int b,int c){ … } Public double max (double a,double b,double c){ … }

Which operator can be used in string concatenation?

Information is passed to a method in ________.

Identifiers in Java have ________ and ________ scopes?

The java.text package contains classes for manipulating all of the following items except ________.

Method calls cannot be distinguished by ________.

Stacks are known as ________ data structures.

Which of the following methods is not in the Math class?

Filled rectangles and filled circles are drawn using Graphics method ________ and ________.

Consider the following Java statements: Int x = 9; Double y = 5.3; Result = calculateValue(x,y); Which of the following statements is false?

Which of the following can be an argument to a method?

Overloaded methods always have the same _________.

A static method can ________.

Which statement below could be used to simulate the outputs of rolling a six-sided die? Suppose randomNumbers is a SecureRandom object.

Which of the following promotions of primitive types is not allowed to occur?

When an object is concatenated with a String,________.

If more method calls occur than can have their activation records stored on the program execution stack,an error known as a ________ occurs.

Method log takes the logarithm of its argument with respect to what base?

Java uses class ________ to represent colors using their RGB values.

Introduction to Computers and Java

Introduction to Java Applications

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components: Part 1

Graphics and Java 2D

Strings

Files,streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

JavaFX

Filters

Identifiers in Java have and scopes?

Filled rectangles and filled circles are drawn using Graphics method and .