最新的Oracle 1z1-813免費考試真題

問題1

Given the code fragment:

You have been asked to define the productcode class. The definition of the productcode class must allow c 1 instantiation co succeed and cause a compilation error on o2 instantiation.
Which definition of productcode meets the requirement?

A. class productCode<T, S<IntegAr>> {
T c1;
S c2;
)

B. class productCode<T, S extends T> {
T c1;
S c2;
)

C. Class productCode<T, S super T> {
T c1;
S c2;
)

D. class productCode<T, S< {
T c1;
S c2;
)

正確答案: B

問題2

Which is true regarding the jaa.nio.file.Path interface?

A. The interface extends the watchservice Interface.

B. Implementation of this Interface are nor safe for use by multiple concurrent threads.

C. implementations of this interface arc immutable.

D. Paths associated with the default provider are not interoperable with the java.io.File class.

正確答案: C

問題3

Given the code fragment:

What is the result if the integer aVar is 9?

A. 10 Hello World!

B. Hello World!

C. Hello Universe!

D. Compilation fails.

正確答案: A

問題4

Given the code fragment:

You have been asked to ensure that the run methods of both the worker and Master classes are executed.
Which modification meets the requirement?

A. At line n2, insert cyclicBarrier cb = new cyclicBarrier {1, master} ;

B. At line n2, insert cyclicBarrier cb = new cyclicBarrier{master) ;

C. At line n2, insert cyclicBarrier cb = new cyclicBarrier {1) ;

D. At line n2, insert cyclicBarrier cb = new cyclicBarrier {2, master} ;

正確答案: A

問題5

Given:

What is the result?

A. 2000. 0

B. 0 0

C. 1500. 0

D. A compilation error occurs.

正確答案: C

問題6

Give the code fragment:

What is the result?

A. 0 : 1 : pen

B. 0 : 0 : 0 : 0 : 0 : pen

C. 0 : 0 : pen

D. A compilation error occurs.

E. 0 : 1 : 2 : 3 : 4 :

正確答案: C

最新的Oracle Upgrade to Java SE 8 OCP ( Java SE 6 and all prior versions) - 1z1-813免費考試真題

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