Oracle 1z0-813 Bootcamp 2021

NEW QUESTION 1
Given the code fragment:

What is the result?

• A. An exception is thrown at runtime.
• B. Jock Jcne
• C. Jack jane John Tcm Tim
• D. A compilation error occur

Answer: CC

NEW QUESTION 2
Which two statements are true about localizing an application?

• A. Support for new regional language does not require recompilation of the code.
• B. Language codes use lowercase letters and region cedes use uppercase letters,
• C. Textual elements (messages and GUI labels) are hard coded in the code.
• D. Language and region-specific programs are created using localized data.
• E. Resource bundle files Include date and currency information.

Answer: DE

NEW QUESTION 3
Given the code fragment:

Which two code fragments, when Inserted Independently at line 14, enable the code to compile?

• A. Map<String, List<String>> category = new HashMap<>> () ;
• B. Mae<String, List<String>> category = new HashMap<String, List<String>> () ;
• C. Map<String, List<String>> category = new HashMap<String, ArrayList<String>> () ;
• D. Map<String, List<String>> category = new HashMap<List> () ;
• E. Map<String, List<String>> category = new HashMap<String, List<>> () ;
• F. Map<String, List<String>> category = new HashMap<> () ;

Answer: BF

NEW QUESTION 4
Given the code fragment:

Which code fragment could you use to refactor the code from line 4 to 8 to use a Lambda expression?

• A. Vehicle V =(int speed) -> =[int.speed) system.out.prin
• B. (Fly at” + speed} ;
• C. Vehicle V = speed -> [system.outprint(“Fly at “ + speed) ] ;
• D. Vehicle V = int speed -> System.cut.print (“Fly at “+ speed} ;
• E. Vehicle V = new vehicle (int speed) (System.out.print{ Fly at “+speed); };

Answer: B

NEW QUESTION 5
Given the code fragments:

What is the result?

• A. DodcatMOUSE
• B. [Do
• C. Cat, Mouse]
• D. null
• E. compilation error occur

Answer: D

NEW QUESTION 6
Given the code fragments:

• A. Optional (France) Not Found
• B. FranceOptional [Not Found]
• C. optional [France] Optional [Not Found]
• D. France Not Found

Answer: D

NEW QUESTION 7
Given:

Which result possible?

• A. L1 w3
• B. L2 w3
• C. L1 L2 w3
• D. w3
• E. Compilation fail

Answer: E

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 two codes correctly represent a standard language local code?

• A. UB
• B. uB
• C. FR
• D. EE
• E. ff
• F. eB

Answer: CD

NEW QUESTION 10
Which two states are valid for a watch key?

• A. Ready
• B. Not Runnable
• C. Runnable
• D. Does not Exist
• E. Signalled

Answer: AE

NEW QUESTION 11
Which is true regarding the jaa.nio.file.Path interface?

• A. Implementation of this Interface are nor safe for use by multiple concurrent threads.
• B. implementations of this interface arc immutable.
• C. The interface extends the watchservice Interface.
• D. Paths associated with the default provider are not interoperable with the java.io.File clas

Answer: B

NEW QUESTION 12
Given the code fragments:

What is the result?

• A. The program prints Run… and throws an exception.
• B. Run… Call…
• C. A compilation error occurs at line n2.
• D. A compilation error occurs at line n1.

Answer: B

NEW QUESTION 13
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 14
Given the code fragment:

What is the result?

• A. 0 0
• B. 1 4
• C. A compilation error occurs.
• D. 1 2

Answer: C

NEW QUESTION 15
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 extends T> { T c1;S c2;)
• B. class productCode<T, S< { T c1;S c2;)
• C. class productCode<T, S<IntegAr>> { T c1;S c2;)
• D. Class productCode<T, S super T> { T c1;S c2;)

Answer: A

NEW QUESTION 16
Given the code fragment:

Which code fragment, when inserted at linen1, enables the code to print (500, 1000)?

• A. UnaryOperator<Integger> funIntf- n -> n * 5;
• B. Function<Integer>funIntf –n -> n * 5 ;
• C. intFunction funintf = n -> * 5; I
• D. Consumer <Integer> funIntf = n -> n * 5 ;

Answer: A

NEW QUESTION 17
Given the code fragment:

Which is the valid definition for the crecter interface to enable the code fragment to print ksthy welcome!?

• A. public interface greater { Private string greet {string name};)
• B. public interface greater <T> { Public static String greep (T , name) ;)
• C. public interface greater {Public default String greet{ String name} { Return name;}Public String greet (String name, String salute);)
• D. public interface greater { Public String greet(String name) ;)

Answer: D

NEW QUESTION 18
Which two elements must be present in any valid pipeline?

• A. a lambda expression or a method reference
• B. o terminal operation
• C. one or more Intermediate operations
• D. a reduction operation
• E. a source

Answer: BE

NEW QUESTION 19
Given the code fragment:

What is the result?

• A. A compilation error occurs.
• B. 1020
• C. 20.030.0
• D. A NumberformatExecption is thrown at run tim

Answer: C

NEW QUESTION 20
You are asked to implement an interface that processes a batch of transaction objects and returns a discounted value for each transaction as a double primitive value.
Which interface can you use to accomplish the task?

• A. ToDoubleFunction
• B. DoubleConsumer
• C. DoubleFunction
• D. DoubleSuppLier

Answer: A

NEW QUESTION 21
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