How Many Questions Of 1Z0-819 Free Samples

Want to know Certleader 1Z0-819 Exam practice test features? Want to lear more about Oracle Java SE 11 Developer certification experience? Study High quality Oracle 1Z0-819 answers to Update 1Z0-819 questions at Certleader. Gat a success with an absolute guarantee to pass Oracle 1Z0-819 (Java SE 11 Developer) test on your first attempt.

Free demo questions for Oracle 1Z0-819 Exam Dumps Below:

NEW QUESTION 1
Given:
1Z0-819 dumps exhibit
Which expression when added at line 1 will produce the output of 1.17?

  • A. float z = (float)(Math.round((float)x/y*100)/100);
  • B. float z = Math.round((int)(x/y),2);
  • C. float z = Math.round((float)x/y,2);
  • D. float z = Math.round((float)x/y*100)/(float)100;

Answer: D

Explanation:
1Z0-819 dumps exhibit

NEW QUESTION 2
Which interface in the java.util.function package will return a void return type?

  • A. Supplier
  • B. Predicate
  • C. Function
  • D. Consumer

Answer: D

NEW QUESTION 3
Which two commands are used to identify class and module dependencies? (Choose two.)

  • A. jmod describe
  • B. java Hello.java
  • C. jdeps --list-deps
  • D. jar --show-module-resolution
  • E. java --show-module-resolution

Answer: CE

NEW QUESTION 4
Given:
1Z0-819 dumps exhibit
Which two statements are valid to be written in this interface? (Choose two.)

  • A. public abstract void methodB();
  • B. final void methodG(){System.out.println(“G”);}
  • C. private abstract void methodC();
  • D. public String methodD();
  • E. public int x;
  • F. final void methodE();
  • G. public void methodF(){System.out.println(“F”);}

Answer: AD

NEW QUESTION 5
Given the code fragment:
1Z0-819 dumps exhibit
What is the result?

  • A. 23
  • B. 12
  • C. 123
  • D. 13

Answer: A

Explanation:
1Z0-819 dumps exhibit

NEW QUESTION 6
Examine this excerpt from the declaration of the java.se module:
1Z0-819 dumps exhibit
What does the transitive modifier mean?

  • A. Only a module that requires the java.se module is permitted to require the java.sql module.
  • B. Any module that requires the java.se module does not need to require the java.sql module.
  • C. Any module that attempts to require the java.se module actually requires the java.sql module instead.
  • D. Any module that requires the java.sql module does not need to require the java.se module.

Answer: A

NEW QUESTION 7
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_en_US.properties
  • B. MessageBundle_en.properties
  • C. MessageBundle_fr_FR.properties
  • D. MessageBundle_US.properties
  • E. MessageBundle.properties

Answer: C

NEW QUESTION 8
Given:
1Z0-819 dumps exhibit
You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

  • A. Extend AutoCloseable and override the close method.
  • B. Implement AutoCloseable and override the autoClose method.
  • C. Extend AutoCloseable and override the autoClose method.
  • D. Implement AutoCloseable and override the close method.

Answer: D

NEW QUESTION 9
Given the code fragment:
1Z0-819 dumps exhibit
What is the result?

  • A. 01
  • B. 1
  • C. The program prints nothing.
  • D. It prints 1 in the infinite loop.

Answer: D

NEW QUESTION 10
Given:
1Z0-819 dumps exhibit
Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)

  • A. public List<Integer> foo(Set<CharSequence> m) { ... }
  • B. public ArrayList<Number> foo(Set<CharSequence> m) { ... }
  • C. public List<Integer> foo(TreeSet<String> m) { ... }
  • D. public List<Integer> foo(Set<String> m) { ... }
  • E. public List<Object> foo(Set<CharSequence> m) { ... }
  • F. public ArrayList<Integer> foo(Set<String> m) { ... }

Answer: BC

NEW QUESTION 11
Which code fragment does a service use to load the service provider with a Print interface?

  • A. private Print print = com.service.Provider.getInstance();
  • B. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
  • C. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();
  • D. private Print print = new com.service.Provider.PrintImpl();

Answer: B

NEW QUESTION 12
Given:
1Z0-819 dumps exhibit
Which two interfaces can be used in lambda expressions? (Choose two.)

  • A. MyInterface1
  • B. MyInterface3
  • C. MyInterface5
  • D. MyInterface2
  • E. MyInterface4

Answer: CD

NEW QUESTION 13
Which command line runs the main class com.acme.Main from the module com.example?

  • A. java --module-path mods com.example/com.acme.Main
  • B. java –classpath com.example.jar com.acme.Main
  • C. java --module-path mods -m com.example/com.acme.Main
  • D. java -classpath com.example.jar –m com.example/com.acme.Main

Answer: D

NEW QUESTION 14
Given:
1Z0-819 dumps exhibit
executed using this command: java Myclass My Car is red What is the output of this class?

  • A. Car--red--My
  • B. My--Car--is
  • C. My--is--java
  • D. java--Myclass--My
  • E. Myclass--Car--red

Answer: A

NEW QUESTION 15
Given:
1Z0-819 dumps exhibit
Which annotation should be used to remove warnings from compilation?

  • A. @SuppressWarnings on the main and print methods
  • B. @SuppressWarnings(“unchecked”) on main and @SafeVarargs on the print method
  • C. @SuppressWarnings(“rawtypes”) on main and @SafeVarargs on the print method
  • D. @SuppressWarnings(“all”) on the main and print methods

Answer: B

Explanation:
1Z0-819 dumps exhibit

NEW QUESTION 16
Given:
1Z0-819 dumps exhibit
Why does D cause a compilation error?

  • A. D inherits a() only from C.
  • B. D inherits a() from B and C but the return types are incompatible.
  • C. D extends more than one interface.
  • D. D does not define any method.

Answer: B

NEW QUESTION 17
Given:
1Z0-819 dumps exhibit
Which two allow a.Main to allocate a new Person? (Choose two.)

  • A. In Line 1, change the access modifier to privateprivate Person() {
  • B. In Line 1, change the access modifier to publicpublic Person() {
  • C. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
  • D. In Line 2, change the access modifier to protectedprotected class Main {
  • E. In Line 1, remove the access modifierPerson() {

Answer: BC

NEW QUESTION 18
Given the code fragment:
var pool = Executors.newFixedThreadPool(5);
Future outcome = pool.submit(() > 1);
Which type of lambda expression is passed into submit()?

  • A. java.lang.Runnable
  • B. java.util.function.Predicate
  • C. java.util.function.Function
  • D. java.util.concurrent.Callable

Answer: D

NEW QUESTION 19
Given: Automobile.java
1Z0-819 dumps exhibit
Car.java
1Z0-819 dumps exhibit
What must you do so that the code prints 4?

  • A. Remove the parameter from wheels method in line 3.
  • B. Add @Override annotation in line 2.
  • C. Replace the code in line 2 with Car ob = new Car();
  • D. Remove abstract keyword in line 1.

Answer: B

Explanation:
1Z0-819 dumps exhibit

NEW QUESTION 20
......

Thanks for reading the newest 1Z0-819 exam dumps! We recommend you to try the PREMIUM Certshared 1Z0-819 dumps in VCE and PDF here: https://www.certshared.com/exam/1Z0-819/ (175 Q&As Dumps)