Question 1

Using Java statements, show how you can use the LocalDate class by using the full path and by using an import statement.

Accepted Answer

The answer of  Using Java statements, show how you can...

Question 2

When you ____________________ methods, you risk creating an ambiguous situation-one in which the compiler cannot determine which method to use.

Accepted Answer

The answer of When you ____________________ methods, you risk creating...

Question 3

What does a programmer need to know in order to use two variables with the same name in a class?

Accepted Answer

The answer of What does a programmer need to know...

Question 4

If you want all objects to share a single nonchanging value, then the field is static and ______.

Accepted Answer

A)  end 
B)  final 
C)  permanent 
D)  class

Question 5

Explain the java.lang package and why it is important.

Accepted Answer

The answer of Explain the java.lang package and why it...

Question 6

An alternative to importing a class is to import an entire package of classes.

Accepted Answer

A) True 
 B)False

Question 7

A locally declared variable always ____ another variable with the same name elsewhere in the class.

Accepted Answer

A)  creates 
B)  masks 
C)  deletes 
D)  uses

Question 8

When you properly ____ a method, you can call it providing different argument lists, and the appropriate version of the method executes.

Accepted Answer

A)  declare 
B)  overload 
C)  name 
D)  delete

Question 9

It is not necessary to create an instance of the Math class because the constants and methods of the class are ____.

Accepted Answer

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

Question 10

Explain why the highlighted statements will result in an illegal action.

Accepted Answer

The answer of  
Explain why the highlighted statements will...

Question 11

If you give the same name to a class's instance field and to a local method variable, the instance variable overrides the method's local variable.

Accepted Answer

A) True 
 B)False

Question 12

The ____ package contains is implicitly imported into Java programs and is the only automatically imported, named package.

Accepted Answer

A)  javax.swing 
B)  java.lang 
C)  JOptionPane 
D)  System

Question 13

The Student class above will allow Student information to be constructed in various ways, but is repetitive. How could you use the this reference to reduce the amount of repetitious code and make it less error-prone?

Accepted Answer

The answer of  The Student class above will allow...

Question 14

Explain why it is a problem that the highlighted statements are local variables. How could you fix this problem?

Accepted Answer

The answer of  
Explain why it is a problem...

Question 15

When you instantiate an object from a class, ____ is reserved for each instance field in the class.

Accepted Answer

A)  a constructor 
B)  a signature 
C)  memory 
D)  a field name

Question 16

A variable comes into existence, or ____, when you declare it.

Accepted Answer

A)  goes out of scope 
B)  comes into scope 
C)  overrides scope 
D)  is referenced

Question 17

You can overload methods correctly by providing different parameter lists for methods with the same name.

Accepted Answer

A) True 
 B)False

Question 18

Explain and describe the this reference. How is the this reference used in each of the above methods?

Accepted Answer

The answer of  
Explain and describe the this reference....

Question 19

When they have the same name, variables within ____ of a class override the class's fields.

Accepted Answer

A)  packages 
B)  statements 
C)  fields 
D)  methods

Question 20

public class StudentScores 
{ 
   private int ScoreOne; 
   private int ScoreTwo; 
   private int ScoreThree; 
____ 
____ 
____ 
____ 
____ 
} 
Suppose you want to assign all students a score of 95 on the third test. Using the code above, fill in the blank lines provided to create a two-parameter constructor that will require parameters for the first and second test score data fields, and will assign a value of 95 to the third test score data field. Be sure to include the necessary brackets and semicolons.

Accepted Answer

The answer of public class StudentScores 
{ 
   private int...

Exam 4: More Object Concepts

Using Java statements, show how you can use the LocalDate class by using the full path and by using an import statement.

When you ____________________ methods, you risk creating an ambiguous situation-one in which the compiler cannot determine which method to use.

What does a programmer need to know in order to use two variables with the same name in a class?

If you want all objects to share a single nonchanging value, then the field is static and ______.

Explain the java.lang package and why it is important.

An alternative to importing a class is to import an entire package of classes.

A locally declared variable always ____ another variable with the same name elsewhere in the class.

When you properly ____ a method, you can call it providing different argument lists, and the appropriate version of the method executes.

It is not necessary to create an instance of the Math class because the constants and methods of the class are ____.

Explain why the highlighted statements will result in an illegal action.

If you give the same name to a class's instance field and to a local method variable, the instance variable overrides the method's local variable.

The ____ package contains is implicitly imported into Java programs and is the only automatically imported, named package.

The Student class above will allow Student information to be constructed in various ways, but is repetitive. How could you use the this reference to reduce the amount of repetitious code and make it less error-prone?

Explain why it is a problem that the highlighted statements are local variables. How could you fix this problem?

When you instantiate an object from a class, ____ is reserved for each instance field in the class.

A variable comes into existence, or ____, when you declare it.

You can overload methods correctly by providing different parameter lists for methods with the same name.

Explain and describe the this reference. How is the this reference used in each of the above methods?

When they have the same name, variables within ____ of a class override the class's fields.