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Viewing page 3 out of 7 pages
Viewing questions 21-30 out of questions
Questions # 21:

Given:

Question # 21

What is the result?

Options:

A.

Area is 6.0

B.

Area is 3.0

C.

Compilation fails at line n1

D.

Compilation fails at line n2.

Questions # 22:

Given:

Question # 22

Which action fixes the compiler error?

Options:

A.

At line 17, add throws AccessViolationException

B.

At line 13, add throws LogFileException

C.

At line 2, replace throws LogFileException with throws AccessViolationException

D.

At line 7, insert throw new LogFileException ();

Questions # 23:

Given:

Question # 23

What is the result?

Options:

A.

Hello Log 2:2

B.

Welcome Log 1:2

C.

Welcome Log 2:1

D.

Hello Log 1:2

Questions # 24:

Given the code fragment:

Question # 24

Which code fragment, when inserted at line n1, enables the App class to print Equal?

Question # 24

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Questions # 25:

Given the class definitions:

class C1 {}

class C2 extends C1 {}

class C3 extends C2 {}

and the code fragment:

16.C1 obj1 = (C1) new C2();

17.C2 obj2 = (C2) new C3();

18.C2 obj3 = (C2) new C1();

19.C3 obj4 = (C3) obj2;

Which line throws ClassCastException?

Options:

A.

line 18

B.

line 17

C.

line 19

D.

line 16

Questions # 26:

Which two are benefits of polymorphism? (Choose two.)

Options:

A.

Faster code at runtime

B.

More efficient code at runtime

C.

More dynamic code at runtime

D.

More flexible and reusable code

E.

Code that is protected from extension by other classes

Questions # 27:

Given:

Question # 27

What is the result?

Options:

A.

Compilation fails.

B.

false true

C.

true false

D.

true true

E.

false false

Questions # 28:

Which statement is true about Java byte code?

Options:

A.

It can run on any platform.

B.

It can run on any platform only if it was compiled for that platform.

C.

It can run on any platform that has the Java Runtime Environment.

D.

It can run on any platform that has a Java compiler.

E.

It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler.

Questions # 29:

Given:

Question # 29

What is the result?

Options:

A.

10

20

B.

A compile time error occurs

C.

20

20

D.

10

10

Questions # 30:

Given:

Question # 30

Given the code fragment:

Question # 30

Which two sets of actions, independently, enable the code fragment to print Fit?

Options:

A.

At line n1 insert: import clothing.Shirt;At line n2 insert: String color = Shirt.getColor();

B.

At line n1 insert: import clothing;At line n2 insert: String color = Shirt.getColor();

C.

At line n1 insert: import static clothing.Shirt.getColor;At line n2 insert: String color = getColor();

D.

At line n1 no changes required.At line n2 insert: String color = Shirt.getColor();

E.

At line n1 insert: import Shirt;At line n2 insert: String color = Shirt.getColor();

Viewing page 3 out of 7 pages
Viewing questions 21-30 out of questions
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