1z0-808 Java SE 8 Programmer I Questions and Answers

myStr: 7007, myNum: 7007

Error

myStr: 9009, myNum: 7007

myStr: 7007, myNum: 9009

java MyFile 1 3 2 2

java MyFile 2 2 2

java MyFile 1 2 2 3 4

java MyFile 0 1 2 3

An exception is thrown at runtime.

-1

5

10

int array[] = new int[3] {1, 2, 3};

int array[] = new int[3]; array[0] = 1;

array[1] = 2;

array[2] = 3;

int array[3] = new int[] {1, 2, 3};

int array[] = new int[3]; array = {1, 2, 3};

int array[] = new int[] {1,2,3};

200.0 : 100.0

400.0 : 200.0

400.0 : 100.0

Compilation fails.

C B A

C

A B C

Compilation fails at line n1 and line n2

At line 17, add throws AccessViolationException

At line 13, add throws LogFileException

At line 2, replace throws LogFileException with throws AccessViolationException

At line 7, insert throw new LogFileException ();

Compilation fails.

11

8

9

10

Faster code at runtime

More efficient code at runtime

More dynamic code at runtime

More flexible and reusable code

Code that is protected from extension by other classes

Option A

Option B

Option C

Option D

Option E

11

10

12

A compile time error occurs.

97 9899 100 null null null

97 9899 100 101 102 103

Compilation fails.

A NullPointerException is thrown at runtime.

An ArraylndexOutOfBoundsException is thrown at runtime.

Only the A.Java file compiles successfully.

Only the B.java file compiles successfully.

Only the C.java file compiles successfully.

The A.Java and B.java files compile successfully.

The B.java and C.java files compile successfully.

The A.Java and C.java files compile successfully.

Compilation fails.

false true

true false

true true

false false

Encapsulation ensures that classes can be designed so that only certain fields and methods of an object are accessible from other objects.

Encapsulation ensures that classes can be designed so that their methods are inheritable.

Encapsulation ensures that classes can be designed with some fields and methods declared as abstract.

Encapsulation ensures that classes can be designed so that if a method has an argument MyType x, any subclass of MyType can be passed to that method.

Polymorphism, abstraction, and encapsulation are implemented.

Only polymorphism and inheritance are implemented.

Polymorphism, inheritance, and abstraction are implemented.

Only inheritance and encapsulation are implemented.

May 04, 2014T00:00:00.000

2014-05-04T00:00: 00.000

5/4/14T00:00:00.000

An exception is thrown at runtime.

2 4

0 2 4 6

0 2 4

Compilation fails.

Compilation fails.

Hi removed

An UnsupportedOperationException is thrown at runtime.

The program compiles, but it prints nothing.

1

2

3

4

Option A

Option B

Option C

Option D

true:false:true

false:true:true

false:true:false

true:true:false

Its expression can evaluate to a collection of values.

The break statement, at the end of each case block, is optional.

Its case label literals can be changed at runtime.

It must contain the default section.

After line 11, three objects are eligible for garbage collection.

After line 11, two objects are eligible for garbage collection.

After line 11, one object is eligible for garbage collection.

After line 11, none of the objects are eligible for garbage collection.

BaseDerivedA

BaseDerivedB

DerivedBDerivedB

DerivedBDerivedA

A ClassCastException is thrown at runtime.

10 : 30 : 6

10 : 22 : 22

10 : 22 : 20

10 : 22 : 6

employee.salary = 50_000;

director.salary = 80_000;

employee.budget = 200_000;

manager.budget = 1_000_000;

manager.stockOption = 500;

director.stockOptions = 1_000;

A class cannot have the same name as its field.

A public class must have a main method.

A class can have final static methods.

A class can have overloaded private constructors.

Fields need to be initialized before use.

Methods and fields are optional components of a class.

Option A

Option B

Option C

Option D

Option E

3 4 5 6

3 4 3 6

5 4 5 6

3 6 4 6

nullRichardDonald

RichardDonald

Compilation fails.

An ArrayIndexOutOfBoundsException is thrown at runtime.

A NullPointerException is thrown at runtime.

Sum is 600

Compilation fails at line n1.

Compilation fails at line n2.

A ClassCastException is thrown at line n1.

A ClassCastException is thrown at line n2.

Option A

Option B

Option C

Option D

Option A

Option B

Option C

Option D

Option E

Option F

Execution terminates in the first catch statement, and Caught a RuntimeException is printed to the console.

Execution terminates in the second catch statement, and Caught an Exception is printed to the console.

A runtime error is thrown in the thread "main".

Execution completes normally, and Ready to use is printed to the console.

The code fails to compile because a throws keyword is required.

Option A

Option B

Option C

Option D

grid[2][1] = ‘X’;

grid[3][2] = ‘X’;

grid[3][1] = ‘X’;

grid[2][3] = ‘X’;

Option A

Option B

Option C

Option D

A

B

Either A or B

A B

A compile time error occurs at line n1

true

false

-1

0

String str = “Java”;

for(int iVal = 0; iVal <=5; iVal++){}

Test() {}

package p1;

import java.io.*;

Hello Log 1:0

Hello Log 2:1

Welcome Log 2:1

Welcome Log 1:0

Option A

Option B

Option C

OptionD

400 200

200 200

400 400

Compilation fails.

Compilation fails.

0 Found

1 Found

3 Found

44

35

47

54

45

421

Improves the program structure because the error handling code is separated from the normal program function

Provides a set of standard exceptions that covers all possible errors

Improves the program structure because the programmer can choose where to handle exceptions

Improves the program structure because exceptions must be handled in the method in which they occurred

Allows the creation of new exceptions that are customized to the particular program being created

Option A

Option B

Option C

Option D

Compilation fails at both line n1 and line n2.

Compilation fails only at line n2.

Compilation fails only at line n1.

Jesse 25Walter 52

Option A

Option B

Option C

Option D

Java SE

Java EE

Compilation fails at line n1.

A NullPointerException is thrown at runtime.

MotorCycle is an interface that implements the Cycle class.

Cycle is an interface that is implemented by the MotorCycle class.

Cycle is an abstract superclass of MotorCycle.

Cycle and MotorCycle both extend the Transportation superclass.

Cycle and MotorCycle both implement the Transportation interface.

MotorCycle is a superclass of Cycle.

A B C D

A C D

A C D D

A B D

A B D C

Child 10

Child 100

Parent 100

Parent 10

Child 10

Parent 1000

Child 10

Parent 100

Parent 100

A compile time error occurs.

A B C Work done

A B C D Work done

A Work done

Compilation fails

Replace line 5 With String opt = "true";Replace line 7 with case "true":

Replace line 5 with boolean opt = l;Replace line 7 with case 1:

At line 9, remove the break statement.

Remove the default section.

String str2 = str1;

String str2 = new String(str1);

String str2 = sb1. toString();

String str2 = "Duke";

A NullPointerException is thrown at runtime.

[1, 2, 4]

[1, 2, 4, null]

[1, 3, 4, null]

[1, 3, 4]

Compilation fails.

5 4 3 2 1 0

5 4 3 2 1

4 2 1

5

Nothing is printed

Hello Log 2:2

Welcome Log 1:2

Welcome Log 2:1

Hello Log 1:2

AB

AC

CC

A ClassCastException is thrown only at line n1.

A ClassCastException is thrown only at line n2.

AB

AC

CC

A ClassCastException is thrown only at line n1.

A ClassCastException is thrown only at line n2.

Option A

Option B

Option C

Option D

Option E

Option A

Option B

Option C

Option D