Question 1

To create a package,you must add a package statement at the ____________ of each class file.

Accepted Answer

A) beginning 
B) end 
C) before each method signature 
D) after the import statements 
A) beginning 
B) end 
C) before each method signature 
D) after the import statements A

Question 2

Write ONE Java statement that computes and displays a random number between 1 and 25.

Accepted Answer

System.out.println("Random number between 1 and 25 " + Math.round((Math.random()* 25)));

Question 3

Wrapper classes are provided for all primitive Java types except Boolean.

Accepted Answer

A) True 
 B)False  False

Question 4

Write a statement that creates and initializes a static variable named salesTax to 7.59.

Accepted Answer

private st

Question 5

When you use the assignment operator with variables of a class type,you are assigning a:

Accepted Answer

A) value 
B) primitive type 
C) local variable 
D) reference 
A) value 
B) primitive type 
C) local variable 
D) reference

Question 6

Wrapper classes provide a class type corresponding to each of the primitive types so that you can have class types that behave somewhat like primitive types.

Accepted Answer

A) True 
 B)False

Question 7

Does an object created with a copy constructor reference the same memory location that the original object references? Explain.

Accepted Answer

If properly coded,a copy constructor sho

Question 8

The method trim of the String class trims off:

Accepted Answer

A) Leading white space 
B) Trailing white space 
C) Leading and trailing white space 
D) Blanks 
A) Leading white space 
B) Trailing white space 
C) Leading and trailing white space 
D) Blanks

Question 9

Write a Java method that returns true if and only if a character is a digit or a letter.The method should display appropriate feedback to the console.

Accepted Answer

public boolean isDigitOrLetter(Character

Question 10

Explain in detail how main memory works.

Accepted Answer

The main memory is used by the computer

Question 11

Explain how a package is named in Java.

Accepted Answer

A package name is a form of path name to

Question 12

Converting from a value of primitive type to a corresponding object of its associated wrapper class is called:

Accepted Answer

A) Boxing 
B) Unboxing 
C) Converting 
D) Reinstantiating 
A) Boxing 
B) Unboxing 
C) Converting 
D) Reinstantiating

Question 13

Primitive types are reference types.

Accepted Answer

A) True 
 B)False

Question 14

To use a package,the program must contain an import statement that names the package.

Accepted Answer

A) True 
 B)False

Question 15

Add a constructor and a copy constructor to the Book class created in question #13.

Accepted Answer

public Book(String t,String a) { title =

Question 16

An example of secondary memory is:

Accepted Answer

A) RAM 
B) ROM 
C) hard disk 
D) all of the above 
A) RAM 
B) ROM 
C) hard disk 
D) all of the above

Question 17

All versions of Java support automatic boxing.

Accepted Answer

A) True 
 B)False

Question 18

null can be used:

Accepted Answer

A) to indicate a variable has no real value 
B) in a Boolean expression with == 
C) as a placeholder 
D) all of the above 
A) to indicate a variable has no real value 
B) in a Boolean expression with == 
C) as a placeholder 
D) all of the above

Question 19

Write a statement that creates a constant variable named TAX_RATE.The tax rate is 8.25%.

Accepted Answer

public sta

Question 20

The program included in the Java SDK that allows a programmer to separate the class interface from the class implementation is called:

Accepted Answer

A) javac 
B) java 
C) javadoc 
D) none of the above 
A) javac 
B) java 
C) javadoc 
D) none of the above

To create a package,you must add a package statement at the ____________ of each class file.

Write ONE Java statement that computes and displays a random number between 1 and 25.

Wrapper classes are provided for all primitive Java types except Boolean.

Write a statement that creates and initializes a static variable named salesTax to 7.59.

When you use the assignment operator with variables of a class type,you are assigning a:

Wrapper classes provide a class type corresponding to each of the primitive types so that you can have class types that behave somewhat like primitive types.

Does an object created with a copy constructor reference the same memory location that the original object references? Explain.

The method trim of the String class trims off:

Write a Java method that returns true if and only if a character is a digit or a letter.The method should display appropriate feedback to the console.

Explain in detail how main memory works.

Explain how a package is named in Java.

Converting from a value of primitive type to a corresponding object of its associated wrapper class is called:

Primitive types are reference types.

To use a package,the program must contain an import statement that names the package.

Add a constructor and a copy constructor to the Book class created in question #13.

An example of secondary memory is:

All versions of Java support automatic boxing.

null can be used:

Write a statement that creates a constant variable named TAX_RATE.The tax rate is 8.25%.

The program included in the Java SDK that allows a programmer to separate the class interface from the class implementation is called:

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Arrays

Inheritance

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 5: Defining Classes Ii

To create a package,you must add a package statement at the ____________ of each class file.

Write ONE Java statement that computes and displays a random number between 1 and 25.

Wrapper classes are provided for all primitive Java types except Boolean.

Write a statement that creates and initializes a static variable named salesTax to 7.59.

When you use the assignment operator with variables of a class type,you are assigning a:

Wrapper classes provide a class type corresponding to each of the primitive types so that you can have class types that behave somewhat like primitive types.

Does an object created with a copy constructor reference the same memory location that the original object references? Explain.

The method trim of the String class trims off:

Write a Java method that returns true if and only if a character is a digit or a letter.The method should display appropriate feedback to the console.

Explain in detail how main memory works.

Explain how a package is named in Java.

Converting from a value of primitive type to a corresponding object of its associated wrapper class is called:

Primitive types are reference types.

To use a package,the program must contain an import statement that names the package.

Add a constructor and a copy constructor to the Book class created in question #13.

An example of secondary memory is:

All versions of Java support automatic boxing.

null can be used:

Write a statement that creates a constant variable named TAX_RATE.The tax rate is 8.25%.

The program included in the Java SDK that allows a programmer to separate the class interface from the class implementation is called:

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Arrays

Inheritance

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters