Free Oracle 1Z0-816 Exam Dumps Questions & Answers

Which two statements independently compile? (Choose two.)

• A.  List<? extends Number> list = new ArrayList<Object>();
• B.  List<? extends Number> list = new ArrayList<Byte>();
• C.  List<? super Float> list = new ArrayList<Double>();
• D.  List<? super Number> list = new ArrayList<Integer>();
• E.  List<? super Short> list = new ArrayList<Number>();

Given the contents:
MessageBundle.properties file:
message=Hello
MessageBundle_en.properties file:
message=Hello (en)
MessageBundle_US.properties file:
message=Hello (US)
MessageBundle_en_US.properties file:
message=Hello (en_US)
MessageBundle_fr_FR.properties file:
message=Bonjour
and the code fragment:
Locale.setDefault(Locale.FRANCE);
Locale currentLocale = new Locale.Builder().setLanguage("en").build();
ResourceBundle messages = ResourceBundle.getBundle("MessageBundle", currentLocale); System.out. println(messages.getString("message")); Which file will display the content on executing the code fragment?

• A.  MessageBundle_US.properties
• B.  MessageBundle_en.properties
• C.  MessageBundle_en_US.properties
• D.  MessageBundle_fr_FR.properties
• E.  MessageBundle.properties

Given:

What code must you insert on Line 1 to enable the code to print Hello world?

• A.  Hello myH = new Hello();
  Hello.Greeting myG = myH.new Greeting();
  myG.sayHi();
• B.  Hello.Greeting myG = new Hello.Greeting() myG.sayHi();
• C.  Hello myH = new Hello();
  Hello.Greeting myG = myH.new Hello.Greeting();
  myG.sayHi();
• D.  Hello myH = new Hello(); Greeting myG = new Greeting(); myG.sayHi ();

Given:

Which statement on line 1 enables this code fragment to compile?

• A.  UnaryOperator function = s -> s.toUpperCase();
• B.  UnaryOperator<String> function = String::toUpperCase;
• C.  Function function = String::toUpperCase;
• D.  Function<String> function = m -> m.toUpperCase();

Given:

Which is true about line 1?

• A.  It always executes the System.out::print statement.
• B.  If the value is not present, a NullPointerException is thrown at run time.
• C.  If the value is not present, a NoSuchElementException is thrown at run time.
• D.  If the value is not present, nothing is done.