Question 1

Suppose method1 is declared as void method1 ( int a,float b )
Which of the following methods correctly overloads method1?

Accepted Answer

A) void method2 ( int a,float b ). 
B) void method2 ( float a,int b ). 
C) void method1 ( float a,int b ). 
D) void method1 ( int b,float a ). 
A) void method2 ( int a,float b ). 
B) void method2 ( float a,int b ). 
C) void method1 ( float a,int b ). 
D) void method1 ( int b,float a ). C

Question 2

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. A

Question 3

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. A

Question 4

A Java class can have which of the following methods? 
a)void foo( int a )
b)void foo( int a,int b )
c)void foo( double a )
d)void foo( double a,double b )
e)void foo( int b )

Accepted Answer

A) All of the above. 
B) A,B,D,E. 
C) A,B,C,D. 
D) A,C,D,E. 
A) All of the above. 
B) A,B,D,E. 
C) A,B,C,D. 
D) A,C,D,E.

Question 5

Which statement is not true.

Accepted Answer

A) The Java API consists of packages. 
B) The Java API helps programmers avoid "reinventing the wheel." 
C) The Java API consists of import declarations. 
D) The class javax.swing.JApplet is part of the Java API. 
A) The Java API consists of packages. 
B) The Java API helps programmers avoid "reinventing the wheel." 
C) The Java API consists of import declarations. 
D) The class javax.swing.JApplet is part of the Java API.

Question 6

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 7

An enumeration is a special class that's introduced by the keyword ________ and a type name.

Accepted Answer

A) class. 
B) enum. 
C) enumeration. 
D) classEnum. 
A) class. 
B) enum. 
C) enumeration. 
D) classEnum.

Question 8

Variables should be declared as fields only if

Accepted Answer

A) they are local variables. 
B) they are used only within a method. 
C) they are required for use in more than one method or their values must be saved between calls to the class's methods. 
D) they are arguments. 
A) they are local variables. 
B) they are used only within a method. 
C) they are required for use in more than one method or their values must be saved between calls to the class's methods. 
D) they are arguments.

Question 9

The identifiers in an enumeration ________.

Accepted Answer

A) must be unique. 
B) may be duplicated. 
C) must be lowercase letters and cannot contain numbers. 
D) must be uppercase letters and cannot contain numbers. 
A) must be unique. 
B) may be duplicated. 
C) must be lowercase letters and cannot contain numbers. 
D) must be uppercase letters and cannot contain numbers.

Question 10

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 11

Which statement below could be used to simulate the outputs of rolling a six-sided die? Suppose randomNumbers is a Random 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 12

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.

Question 13

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.

Question 14

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

Accepted Answer

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

Question 15

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 16

A well-designed method

Accepted Answer

A) performs multiple unrelated tasks. 
B) repeats code found in other methods. 
C) contains thousands of lines of code. 
D) performs a single,well-defined task. 
A) performs multiple unrelated tasks. 
B) repeats code found in other methods. 
C) contains thousands of lines of code. 
D) performs a single,well-defined task.

Question 17

Math static method random generates a random double value in the range from 0.0

Accepted Answer

A) up to but not including 1.0 
B) up to and including 1.0 
C) up to and including 100.0 
D) up to but not including 100.0 
A) up to but not including 1.0 
B) up to and including 1.0 
C) up to and including 100.0 
D) up to but not including 100.0

Question 18

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 19

Which operator can be used in string concatenation?

Accepted Answer

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

Question 20

Declaring main as ________ allows the JVM to invoke main without creating an instance of the class.

Accepted Answer

A) public. 
B) void. 
C) static. 
D) final. 
A) public. 
B) void. 
C) static. 
D) final.

Exam 6: Methods: a Deeper Look

Suppose method1 is declared as void method1 ( int a,float b ) Which of the following methods correctly overloads method1?

Overloaded methods always have the same _________.

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

A Java class can have which of the following methods? a)void foo( int a ) b)void foo( int a,int b ) c)void foo( double a ) d)void foo( double a,double b ) e)void foo( int b )

Which statement is not true.

Method calls cannot be distinguished by ________.

An enumeration is a special class that's introduced by the keyword ________ and a type name.

Variables should be declared as fields only if

The identifiers in an enumeration ________.

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

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

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

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

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

Information is passed to a method in:

A well-designed method

Math static method random generates a random double value in the range from 0.0

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

Which operator can be used in string concatenation?

Declaring main as ________ allows the JVM to invoke main without creating an instance of the class.

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

Atm Case Study,part 1: Object-Oriented Design With the Uml

Atm Case Study,part 2: Implementing an Object-Oriented Design

Gui Components: Part 1

Graphics and Java 2d

Strings

Files,streams and Object Serialization

Recursion

Searching, Sorting and Big O

Generic Collections

Generic Classes and Methods

Custom Generic Data Structures

Applets and Java Web Start

Multimedia: Applets and Applications

Gui, Part 2

Multithreading

Networking

Accessing Databases With Jdbc

Java Server Faces Web Applications

Ajax-Enabled Jsf Web Applications

Web Services

Filters

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