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Free demo questions for Oracle 1z0-813 Exam Dumps Below:
NEW QUESTION 1
Given the code fragments:
What is the result?
- A. Java SE: 2000.0 Java XE: 120.0B .java SE: 300.0 Java XE : 120.0
- B. Compilation fails due to at line 15.
- C. Compilation falls due to an error at line 16.
Answer: A
NEW QUESTION 2
Given the definitions of Readable and writable interfaces:
What is the result?
- A. Hello welcome close
- B. Compilation fails due to an error at Line n2.
- C. Compilation foils due to on error at Line n3.
- D. Compilation fails due to an error at Line n1..
Answer: A
NEW QUESTION 3
Given the code fragment:
What is the result?
- A. The file s in the home directory are instead along with their attributes.
- B. A compilation error occurs at Line n2.
- C. A compilation error occurs at Line n1.
- D. All files and directories under the home directory are listed along with their attribute
Answer: A
NEW QUESTION 4
Given the code fragment:
What is the result, if the filesalesreport. dat does not exist?
- A. class Java.ia.IOException
- B. Compilation fails at line 6 and 13.
- C. class java.i
- D. flilenNOlfoundException
- E. Compilation fails only at line 6.
- F. Compilation fails only at line 13.
Answer: E
NEW QUESTION 5
Given:
Which code fragment, when inserted at line n1, results in the following output?
- A. double totalprise =pr
- B. Stream()* Reduce (0,0 Double::sun) ;
- C. double totalprise =pr
- D. Stream()*Parallel ()*Reduce {0.0, {p1,p2)-> p1. Getprice{}+ p2. Getprice {}) =
- E. double totalprise =pr
- F. Stream{)*Parallel ()*aap { -> p.getprice{})* reduce (0.0, (p1, p2) -> p1 + p2) ;
- G. double totalprise =pr
- H. Stream{) Rduce(0.0, {p1, p2 ) -> p1 + p2);
Answer: D
NEW QUESTION 6
Which two statements are true about the walKfileTrac method of the files class?
- A. If the file is a directory, and If that directory could not be opened, the poatVisitDirectory method is Invoked with the I/O exception.
- B. The file tree traversal Is breadth first with the given filevisitor Invoked for each file encountered.
- C. The maxDepth parameter's value is the maximum number of directories to visit.
- D. By default, symbolic links are not automatically followed by this method.
- E. If the file attributes cannot be lead due to on I/O exception, the visitFileFailed method is invoked With the I/O exception.
Answer: AE
NEW QUESTION 7
Given:
What is the result?
- A. 0 1 2 3 4
- B. 0 1 2 3 4
- C. 1 1 1 1 1
- D. 1 2 3 4 5
Answer: C
NEW QUESTION 8
Given the code fragement:
If exceptions occur when closing the Filewriter object and when retrieving the JString class object, which exception object is propagated up to the caller of the processFile method?
- A. Java.lan
- B. Exception
- C. Java.lan
- D. NOSuchClassException
- E. Java .j
- F. ToException
- G. Java.lan
- H. classNotFoundException
Answer: D
NEW QUESTION 9
Which code fragment, when inserted at line n1, produces the result fy20`4.txt?
- A. stream<path> files =Files.find(path
- B. get(“D\ report”) , (p, a) -> a isRagular File ());
- C. stream<path> files = File
- D. Wal
- E. get(“D\ report”);
- F. stream<path> files = File
- G. Wal
- H. get(“D\ report”), 3, (p, a) -> p.isregularFile()) ;
- I. stream<path> files = Files.find(path
- J. get(“D\ report”\ry2014.txt”)) ‘
Answer: B
NEW QUESTION 10
Given the code fragment:
Which code fragment, when inserted at line n1, enables the code to print ABCD?
- A. string str = sList.stream reduce () .reduce (“A”, (s1, s2) -> s1.concat (s2)) ;
- B. string str = sList.stream reduce () .reduce (“ “, (s1, s2) -> s1.concat (s2));
- C. string str = sList.stream reduce () .reduce (“A” , string: : concat) ;
- D. string str = sList.stream reduce (). Reduce (s1, s2) ->s1, concat (82) ;
Answer: B
NEW QUESTION 11
Which three must be used when using the java.util-concurrent package to execute a task that returns a result without blocking?
- A. Future
- B. Runnable
- C. ExecutorService
- D. Callable
- E. Thread
- F. Executor
Answer: ACD
NEW QUESTION 12
Given the code fragment?
Which two fragments, when inserted independently at line6, enable the code to print true?
- A. Boolean b = num
- B. stream ().Nonematch( n -> n == 20) ;
- C. Boolean b = num
- D. stream ().filter(n-> n –20).allMatch -> u – 20);
- E. Boolean b = num
- F. stream ().map(n-> n20).Nonematch( n -> n == 20) ;
- G. Boolean b = num
- H. stream ().allMatch -> u – 20);
Answer: BC
NEW QUESTION 13
Given:
Which two code fragments, when inserted at Line n1 independently, enable the code print TRUCKCarBike?
- A. .sorted (comparabl
- B. Comparing (vehicle:: getVName) . reverse()
- C. .sorted(comparator, comparing ((vehicle v)
- D. getVId()))
- E. .map(v->
- F. getVid ()). sorted ()
- G. .sorted ((v1, v2) -> integer .compare(v1.getVId() , v2.getVid()))
- H. .sorted ((v1, v2) -> v1.getVid() < v2. getVid())
Answer: BD
NEW QUESTION 14
Given the code fragment:
What is the result?
- A. NULL
- B. An exception is thrown at runtime.
- C. blank
- D. Compilation fails
- E. invalid
Answer: B
NEW QUESTION 15
Given the code fragment:
Which two changes, taken together, enable the use of this class in a try with resources statement?
- A. Add a mothod:Public void close {) ToException {)
- B. public class CustomRecource extend Closeable implements AutoCloseable {
- C. Add a mothod:Public void autoClose () throws ToException {)
- D. Add a methPublic Boolean close() throws Toxception {)
- E. public calss customResource implements closeable (
- F. public class customResource extends AutoCloseable {
Answer: AF
NEW QUESTION 16
Given:
Which result possible?
- A. L1 w3
- B. L2 w3
- C. L1 L2 w3
- D. w3
- E. Compilation fail
Answer: E
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