Question 1

A _________ states what is assumed to be true when the method is called.

Accepted Answer

A) prescript 
B) postscript 
C) precondition 
D) postcondition 
A) prescript 
B) postscript 
C) precondition 
D) postcondition C

Question 2

Define the terms arguments and parameters.How are they different?

Accepted Answer

Parameters,also referred to as formal parameters,are used to define the list of variables included in the parenthesis in a method signature.An argument is the value actually sent to the method upon invocation.The terms parameters and argument are very similar in meaning and are often used interchangeably by programmers.The terms differ slightly in that an argument is the actual value that replaces the parameter within the method.

Question 3

When you give a command to run a Java program,the runtime system invokes the class constructor.

Accepted Answer

A) True 
 B)False  False

Question 4

In Java,call-by-value is only used with:

Accepted Answer

A) objects 
B) primitive types 
C) this 
D) all of the above 
A) objects 
B) primitive types 
C) this 
D) all of the above

Question 5

Discuss a situation in which it is appropriate to use the this parameter.

Accepted Answer

One common situation that requires the u

Question 6

Discuss the importance of accessor and mutator methods and how they apply to the abstraction concept.

Accepted Answer

It is considered good programming practi

Question 7

Mutator methods can return integer values indicating if the change of the instance variable was a success.

Accepted Answer

A) True 
 B)False

Question 8

Accessor methods:

Accepted Answer

A) return something equivalent to the value of an instance variable. 
B) promotes abstraction 
C) both A and B 
D) none of the above 
A) return something equivalent to the value of an instance variable. 
B) promotes abstraction 
C) both A and B 
D) none of the above

Question 9

A set method is:

Accepted Answer

A) an accessor method 
B) a mutator method 
C) a recursive method 
D) none of the above 
A) an accessor method 
B) a mutator method 
C) a recursive method 
D) none of the above

Question 10

An invocation of a method that returns a value can be used as an expression any place that a value of the Type_Returned can be used.

Accepted Answer

A) True 
 B)False

Question 11

A program whose only task is to test a method is called a:

Accepted Answer

A) driver program 
B) stub 
C) bottom-up test 
D) recursive method 
A) driver program 
B) stub 
C) bottom-up test 
D) recursive method

Question 12

Two methods that are expected to be in all Java classes are:

Accepted Answer

A) getName and setName 
B) toString and equals 
C) compareTo and charAt 
D) toLowerCase and toUpperCase 
A) getName and setName 
B) toString and equals 
C) compareTo and charAt 
D) toLowerCase and toUpperCase

Question 13

Discuss the public and private modifiers in context of methods and instance variables.

Accepted Answer

The modifiers public and private can bot

Question 14

Only the default constructor has the this parameter.

Accepted Answer

A) True 
 B)False

Question 15

The body of a method that returns a value must contain at least one _________ statement.

Accepted Answer

A) void 
B) invocation 
C) thows 
D) return 
A) void 
B) invocation 
C) thows 
D) return

Question 16

In Java,a block is delimited by:

Accepted Answer

A) . ) 
B) . /* */ 
C) . " " 
D) . { } 
A) . ) 
B) . /* */ 
C) . " " 
D) . { }

Question 17

Write preconditions and postconditions for the power method you wrote in question #4.

Accepted Answer

/** Precondition: All instance

Question 18

Add two constructors to the Appointment class created in question #9.Include a default constructor and a constructor to initialize an Appointment to suitable arguments.

Accepted Answer

/** Class constructors */
public Appoint

Question 19

Write a Java class that represents a Student with instance variables name,id,and gpa.Include constructors,accessor,mutator and any facilitator methods you may need.

Accepted Answer

public class Student
{
private String na

Question 20

Create a class named Appointment that contains instance variables startTime,endTime,dayOfWeek valid values are Sunday through Saturday),and a date which consists of a month,day and year.All times should be in military time,therefore it is appropriate to use integers to represent the time.Create the appropriate accessor and mutator methods.

Accepted Answer

public class Appointment
{
private int s

A _________ states what is assumed to be true when the method is called.

Define the terms arguments and parameters.How are they different?

When you give a command to run a Java program,the runtime system invokes the class constructor.

In Java,call-by-value is only used with:

Discuss a situation in which it is appropriate to use the this parameter.

Discuss the importance of accessor and mutator methods and how they apply to the abstraction concept.

Mutator methods can return integer values indicating if the change of the instance variable was a success.

Accessor methods:

A set method is:

An invocation of a method that returns a value can be used as an expression any place that a value of the Type_Returned can be used.

A program whose only task is to test a method is called a:

Two methods that are expected to be in all Java classes are:

Discuss the public and private modifiers in context of methods and instance variables.

Only the default constructor has the this parameter.

The body of a method that returns a value must contain at least one _________ statement.

In Java,a block is delimited by:

Write preconditions and postconditions for the power method you wrote in question #4.

Add two constructors to the Appointment class created in question #9.Include a default constructor and a constructor to initialize an Appointment to suitable arguments.

Write a Java class that represents a Student with instance variables name,id,and gpa.Include constructors,accessor,mutator and any facilitator methods you may need.

Getting Started

Console Input and Output

Flow of Control

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters

Exam 4: Defining Classes I

A _________ states what is assumed to be true when the method is called.

Define the terms arguments and parameters.How are they different?

When you give a command to run a Java program,the runtime system invokes the class constructor.

In Java,call-by-value is only used with:

Discuss a situation in which it is appropriate to use the this parameter.

Discuss the importance of accessor and mutator methods and how they apply to the abstraction concept.

Mutator methods can return integer values indicating if the change of the instance variable was a success.

Accessor methods:

A set method is:

An invocation of a method that returns a value can be used as an expression any place that a value of the Type_Returned can be used.

A program whose only task is to test a method is called a:

Two methods that are expected to be in all Java classes are:

Discuss the public and private modifiers in context of methods and instance variables.

Only the default constructor has the this parameter.

The body of a method that returns a value must contain at least one _________ statement.

In Java,a block is delimited by:

Write preconditions and postconditions for the power method you wrote in question #4.

Add two constructors to the Appointment class created in question #9.Include a default constructor and a constructor to initialize an Appointment to suitable arguments.

Write a Java class that represents a Student with instance variables name,id,and gpa.Include constructors,accessor,mutator and any facilitator methods you may need.

Getting Started

Console Input and Output

Flow of Control

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters