All About Real 1Z0-819 Practice

NEW QUESTION 1
Given:

and

What is the result?

• A. A NullPointerException is thrown at run time.
• B. The compilation fails.
• C. 1Null null
• D. 111
• E. A ClassCastException is thrown at run time.

Answer: B

Explanation:

NEW QUESTION 2
Which two describe reasons to modularize the JDK? (Choose two.)

• A. easier to understand the Java language
• B. improves security and maintainability
• C. easier to expose implementation details
• D. improves application robustness
• E. easier to build a custom runtime linking application modules and JDK modules

Answer: BD

NEW QUESTION 3
Given the declaration:

Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

• A. @Resource(priority=100)
• B. @Resource(priority=0)
• C. @Resource(name=“Customer1”, priority=100)
• D. @Resource(name=“Customer1”)
• E. @Resource

Answer: AB

NEW QUESTION 4
Given:

What is the output?

• A. I am an object array
• B. The compilation fails due to an error in line 1.
• C. I am an array
• D. I am an object

Answer: D

NEW QUESTION 5
Given:

Which three classes successfully override printOne()? (Choose three.)

• A. Option A
• B. Option B
• C. Option C
• D. Option D
• E. Option E
• F. Option F

Answer: ACD

NEW QUESTION 6
Given:

Which three are true? (Choose three.)

• A. b1.foo(c) prints Bonjour le monde!
• B. f1.foo(c) prints Hello world!
• C. f1.foo(c) prints Olá Mundo!
• D. b1.foo(c) prints Hello world!
• E. f2.foo(c) prints Olá Mundo!
• F. b1.foo(c) prints Olá Mundo!
• G. f2.foo(c) prints Bonjour le monde!
• H. f2.foo(c) prints Hello world!
• I. f1.foo(c) prints Bonjour le monde!

Answer: BFG

NEW QUESTION 7
Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

• A. Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
• B. Replace line 1 with List<Widget> widgetStream = widgets.stream();.
• C. Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).
• D. Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

Answer: AD

NEW QUESTION 8
Consider this method declaration:

A) “SET SESSION AUTHORIZATION “ + user
B) “SET SESSION AUTHORIZATION “ + stmt.enquoteIdentifier(user) Is A or B the correct replacement for <EXPRESSION> and why?

• A. A, because it sends exactly the value of user provided by the calling code.
• B. B, because enquoting values provided by the calling code prevents SQL injection.
• C. A and B are functionally equivalent.
• D. A, because it is unnecessary to enclose identifiers in quotes.
• E. B, because all values provided by the calling code should be enquoted.

Answer: A

NEW QUESTION 9
Given:

executed with this command: java Main one two three
What is the output of this class?

• A. The compilation fails.
• B. 1) one2) two3) three
• C. A java.lang.ArrayIndexOutOfBoundsException is thrown.
• D. 1) one
• E. nothing

Answer: B

NEW QUESTION 10
A company has an existing sales application using a Java 8 jar file containing packages: com.company.customer;
com.company.customer.orders; com.company.customer.info; com.company.sales;
com.company.sales.leads; com.company.sales.closed; com.company.orders; com.company.orders.pending; com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

B)

C)

D)

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

NEW QUESTION 11
Which code fragment prints 100 random numbers?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: D

NEW QUESTION 12
Given:

When is the readObject method called?

• A. before this object is deserialized
• B. after this object is deserialized
• C. before this object Is serialized
• D. The method is never called.
• E. after this object is serialized

Answer: B

NEW QUESTION 13
Given:

What is the result?

• A. compilation error
• B. 0 5
• C. 6 13
• D. 5 12

Answer: A

Explanation:

NEW QUESTION 14
Given:

What is the result?

• A. 3 5 3 3
• B. 3 3 3 3
• C. 3 5 3 5
• D. 5 5 3 3

Answer: A

Explanation:

NEW QUESTION 15
Given:

What is the result?

• A. 2,34,34,5
• B. 2,34,54,5
• C. 2,54,54,5
• D. 2,34,54,3

Answer: C

Explanation:

NEW QUESTION 16
Given:

Which loop incurs a compile time error?

• A. the loop starting line 11
• B. the loop starting line 7
• C. the loop starting line 14
• D. the loop starting line 3

Answer: C

NEW QUESTION 17
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

• A. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));
• B. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
• C. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
• D. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);

Answer: A

NEW QUESTION 18
Which code fragment compiles?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: D

Explanation:

NEW QUESTION 19
Given:

Which option should you choose to enable the code to print Something happened?

• A. Add extends GeneralException on line 1.Add extends Exception on line 2.
• B. Add extends SpecificException on line 1.Add extends GeneralException on line 2.
• C. Add extends Exception on line 1.Add extends Exception on line 2.
• D. Add extends Exception on line 1.Add extends GeneralException on line 2.

Answer: D

Explanation:

NEW QUESTION 20
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