Question 1

Data hiding,which means that critical data stored inside the object is protected from code outside the object is accomplished in Java by

Accepted Answer

A)  using the public access specifier on the class methods 
B)  using the private access specifier on the class methods 
C)  using the private access specifier on the class definition 
D)  using the private access specifier on the class fields 
A)  using the public access specifier on the class methods 
B)  using the private access specifier on the class methods 
C)  using the private access specifier on the class definition 
D)  using the private access specifier on the class fields

Question 2

Which of the following statements will create a reference,str,to the string,"Hello,world"? (1)String str = new String("Hello,world");
(2)String str = "Hello,world";

Accepted Answer

A)  1 
B)  2 
C)  1 and 2 
D)  Neither 1 or 2 
A)  1 
B)  2 
C)  1 and 2 
D)  Neither 1 or 2

Question 3

A constructor

Accepted Answer

A)  always accepts two arguments 
B)  has return type of void 
C)  has the same name as the class 
D)  always has an access specifier of private 
A)  always accepts two arguments 
B)  has return type of void 
C)  has the same name as the class 
D)  always has an access specifier of private

Question 4

A constructor is a method that is automatically called when an object is created.

Accepted Answer

A) True 
 B)False

Question 5

A method that gets a value from a class's field but does not change it is known as a mutator method.

Accepted Answer

A) True 
 B)False

Question 6

For the following code,which statement is not true? public class Sphere
{
Private double radius;
Public double x;
Private double y;
Private double z;
}

Accepted Answer

A)  x is available to code that is written outside the Circle class. 
B)  radius is not available to code written outside the Circle class. 
C)  radius,x,y,and z are called members of the Circle class. 
D)  z is available to code that is written outside the Circle class. 
A)  x is available to code that is written outside the Circle class. 
B)  radius is not available to code written outside the Circle class. 
C)  radius,x,y,and z are called members of the Circle class. 
D)  z is available to code that is written outside the Circle class.

Question 7

This refers to the combining of data and code into a single object.

Accepted Answer

A)  Data hiding 
B)  Abstraction 
C)  Object 
D)  Encapsulation 
A)  Data hiding 
B)  Abstraction 
C)  Object 
D)  Encapsulation

Question 8

Which of the following statements will create a reference,str,to the String,"Hello,World"?

Accepted Answer

A)  String str = "Hello,World"; 
B)  string str = "Hello,World"; 
C)  String str = new "Hello,World"; 
D)  str = "Hello,World"; 
A)  String str = "Hello,World"; 
B)  string str = "Hello,World"; 
C)  String str = new "Hello,World"; 
D)  str = "Hello,World";

Question 9

Overloading means multiple methods in the same class

Accepted Answer

A)  have the same name,but different return types 
B)  have different names,but the same parameter list 
C)  have the same name,but different parameter lists 
D)  perform the same function 
A)  have the same name,but different return types 
B)  have different names,but the same parameter list 
C)  have the same name,but different parameter lists 
D)  perform the same function

Data hiding,which means that critical data stored inside the object is protected from code outside the object is accomplished in Java by

Which of the following statements will create a reference,str,to the string,"Hello,world"? (1)String str = new String("Hello,world"); (2)String str = "Hello,world";

A constructor

A constructor is a method that is automatically called when an object is created.

A method that gets a value from a class's field but does not change it is known as a mutator method.

For the following code,which statement is not true? public class Sphere { Private double radius; Public double x; Private double y; Private double z; }

This refers to the combining of data and code into a single object.

Which of the following statements will create a reference,str,to the String,"Hello,World"?

Overloading means multiple methods in the same class

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters

Exam 6: A First Look at Classes

Data hiding,which means that critical data stored inside the object is protected from code outside the object is accomplished in Java by

Which of the following statements will create a reference,str,to the string,"Hello,world"? (1)String str = new String("Hello,world"); (2)String str = "Hello,world";

A constructor

A constructor is a method that is automatically called when an object is created.

A method that gets a value from a class's field but does not change it is known as a mutator method.

For the following code,which statement is not true? public class Sphere { Private double radius; Public double x; Private double y; Private double z; }

This refers to the combining of data and code into a single object.

Which of the following statements will create a reference,str,to the String,"Hello,World"?

Overloading means multiple methods in the same class

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters