Class Libraries

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AP Computer Science A › Class Libraries

Questions 1 - 10
1

What line of code is needed to import in order to use Color in the following format Color.Blue, Color.RED, Color.White?

import java.awt.*;

import java.awt.Color;

import java.util.Color;

import java.io.Color;

Explanation

If you were to use the following format Color.Red, Color.Blue, etc then the correct answer would have to be java.awt.*; While java.awt.Color; does fit the appropriate code, if you import that entire statement, you don't need to put Color.Red just Red and following. The other two import statements are just completely wrong.

2

What line of code is needed to import in order to use Color in the following format Color.Blue, Color.RED, Color.White?

import java.awt.*;

import java.awt.Color;

import java.util.Color;

import java.io.Color;

Explanation

If you were to use the following format Color.Red, Color.Blue, etc then the correct answer would have to be java.awt.*; While java.awt.Color; does fit the appropriate code, if you import that entire statement, you don't need to put Color.Red just Red and following. The other two import statements are just completely wrong.

3

What line of code is needed to import in order to use Color in the following format Color.Blue, Color.RED, Color.White?

import java.awt.*;

import java.awt.Color;

import java.util.Color;

import java.io.Color;

Explanation

If you were to use the following format Color.Red, Color.Blue, etc then the correct answer would have to be java.awt.*; While java.awt.Color; does fit the appropriate code, if you import that entire statement, you don't need to put Color.Red just Red and following. The other two import statements are just completely wrong.

4

Which of the following header statements allow you to omit using the std:: when using cout?

using namespace std;

#include

#include

#include

You don't need a header statement.

Explanation

You must put using namespace std; at the top of your file to avoid having to type std:: every time you use cout and cin.

5

Which of the following header statements allow you to omit using the std:: when using cout?

using namespace std;

#include

#include

#include

You don't need a header statement.

Explanation

You must put using namespace std; at the top of your file to avoid having to type std:: every time you use cout and cin.

6

Which of the following header statements allow you to omit using the std:: when using cout?

using namespace std;

#include

#include

#include

You don't need a header statement.

Explanation

You must put using namespace std; at the top of your file to avoid having to type std:: every time you use cout and cin.

7

Which of the following header statements allow you to omit using the std:: when using cout?

using namespace std;

#include

#include

#include

You don't need a header statement.

Explanation

You must put using namespace std; at the top of your file to avoid having to type std:: every time you use cout and cin.

8

Which of the following header statements allow you to omit using the std:: when using cout?

using namespace std;

using namespace std;

#include

#include

#include

#include

#include

#include

You don't need a header statement.

You don't need a header statement.

Explanation

You must put using namespace std; at the top of your file to avoid having to type std:: every time you use cout and cin.

9

Which of the access modifiers don't work in Java?

delete

static

final

abstract

Explanation

One of the benefits to Java is that there is garbage collection. So when data is disposed of its done automatically versus a language like C++ where you need to tell the program to delete dynamically allocated data.

10

Which of the access modifiers don't work in Java?

delete

static

final

abstract

Explanation

One of the benefits to Java is that there is garbage collection. So when data is disposed of its done automatically versus a language like C++ where you need to tell the program to delete dynamically allocated data.

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