Oracle 1Z0-813 Online Practice Questions and Exam Preparation

Oracle 1Z0-813 Online Questions & Answers

• Question 51:

  Given the code fragment:

  

  What is the result?

  A. 0 : 1 : 2 : 3 : 4 :
  B. 0 : 1 : pen
  C. 0 : 0 : pen
  D. 0 : 0 : 0 : 0 : 0 : pen
  E. A compilation error occurs.
  C. 0 : 0 : pen

• Question 52:

  Given the code fragments:

  

  and

  

  What is the result?

  A. Optional [France] Optional[NotFound]
  B. Optional[France] Not Found
  C. France Not Found
  D. France Optional[Not Found]
  C. France Not Found

• Question 53:

  Given the code fragment:

  

  What is the result?

  A. A compilation error occurs.
  B. 20.0
  C. 10
  D. A NumberFormatException is thrown at run time.
  A. A compilation error occurs.

  ---

  The compilation fails due the to following line: codes.replaceAll(uo);

  Incompatible types: Double cannot be converted into integer.

• Question 54:

  Given the code fragment:

  

  What is the result, if the file salesreport.dat does not exist?

  A. class java.io.FileNotFoundException
  B. class java.io.IOException
  C. Compilation fails at line 6 and 13.
  D. Compilation fails only at line 13.
  E. Compilation fails only at line 6.
  B. class java.io.IOException

• Question 55:

  Given the code fragment: What is the result?

  

  A. [x, x] [x, x, x, x]
  B. [x, x]
  C. [x] [x, x] [x, x, x]
  D. [x] [x, x] [x, x, x] [x, x, x, x]
  D. [x] [x, x] [x, x, x] [x, x, x, x]

  ---

  CyclicBarrier is a synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fixed sized party of threads that must occasionally wait for each other. The barrier is called cyclic because it can be re-used after the waiting threads are released.

  Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CyclicBarrier.html

• Question 56:

  Given the Greetings.properties file, containing:

  

  and given:

  

  What is the result?

  A. Goodbye everyone!
  B. Hello, everyone!
  C. HELLO_MSG
  D. Compilation fails.
  E. Goodbye_MSG
  D. Compilation fails.

  ---

  The following line fails compilation:

  System.out.println(resource.getObject(1));

  The Java.util.ResourceBundle.GetObject(String Key) gets an object for the given key, in string format not integer format, from this resource bundle or one of its parents.

  Reference: https://www.tutorialspoint.com/java/util/java_util_resourcebundle.htm

• Question 57:

  Given the code fragment:

  

  What is the result?

  A. A compilation error occurs at line n1.
  B. Can't logout
  C. Logged out at: 2015-01-12T21:58:19.880Z
  D. Logged out at: 2015-01-12T21:58:00Z
  B. Can't logout

  ---

  loginTime and logoutTime would be the same as they are truncated.

• Question 58:

  Which two codes correctly represent a standard language locale code? (Choose two.)

  A. u8
  B. fr
  C. es
  D. U8
  E. FR
  F. ES
  B. fr
  C. es

  ---

  Language codes use lowercase.

  The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain.

  aLocale = new Locale("fr", "CA");

  bLocale = new Locale("en", "US");

  cLocale = new Locale("en", "GB");

  Reference: https://docs.oracle.com/javase/tutorial/i18n/locale/create.html

• Question 59:

  Given the code fragment:

  

  Which code fragment, when inserted at line n1, enables the code to print the sum of all the elements in the nums list?

  A. return list.stream().mapToInt(i -> i + i).sum();
  B. return list.stream().map(i -> i + i).sum();
  C. return list.stream().map(i -> i).sum();
  D. return list.stream().mapToInt(i -> i).sum();
  D. return list.stream().mapToInt(i -> i).sum();

  ---

  Incorrect Answers:

  A: Gives 30, not the correct sum of 15.

  B: Does not compile.

  C: Does not compile.

• Question 60:

  Which two statements are true about localizing an application? (Choose two.)

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

  ---

  A: The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain.

  aLocale = new Locale("fr", "CA"); bLocale = new Locale("en", "US"); cLocale = new Locale("en", "GB");

  C: Localization is the process of adapting an internationalized application to support a specific region or locale. Incorrect Answers:

  B: Resource bundle files does not include date a currency information. Date and currency information are stored in locales, not in resource bundle files.

  D: Recompilation is not necessary.

  E: Textual elements are not hard-coded on the code.

  References: https://docs.oracle.com/javase/tutorial/i18n/locale/create.html http://docs.oracle.com/javaee/6/tutorial/doc/bnaxw.html