New Oracle 1Z0-819 Dumps & Questions Updated on 2023
Dumps to Pass your 1Z0-819 Exam with 100% Real Questions and Answers
Oracle 1Z0-819 certification exam is a valuable credential that confirms the candidate's proficiency in Java SE 11 programming and demonstrates their commitment to professional development. By passing the exam, candidates can prove their skills to potential employers, increase their earning potential, and take their Java programming career to new heights.
NEW QUESTION # 35
Given:
Which statement on line 1 enables this code to compile?
- A. Function function = x -> x.substring(0,2);
- B. Consumer function = (String f) -> (System.out.println(f);};
- C. Predicate function = a -> a.equals("banana");
- D. Supplier function = () -> fruits.get (0);
Answer: A
NEW QUESTION # 36
Given:
Which two constructors will compile and set the class field strings? (Choose two.)
- A. Option B
- B. Option E
- C. Option D
- D. Option C
- E. Option A
Answer: B,D
NEW QUESTION # 37
Given:
Which two statements are valid to be written in this interface? (Choose two.)
- A. final void methodG(){System.out.println("G");}
- B. public String methodD();
- C. public int x;
- D. private abstract void methodC();
- E. public void methodF(){System.out.println("F");}
- F. public abstract void methodB();
- G. final void methodE();
Answer: B,F
NEW QUESTION # 38
Given:
What is the result?
- A. 5 12
- B. 0 5
- C. 6 13
- D. compilation error
Answer: D
Explanation:
NEW QUESTION # 39
Given:
Examine these requirements:
* Eliminate code duplication.
* Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?
- A. Option B
- B. Option C
- C. Option D
- D. Option A
Answer: A
NEW QUESTION # 40
Given:
Why does D cause a compilation error?
- A. D extends more than one interface.
- B. D does not define any method.
- C. D inherits a() only from C.
- D. D inherits a() from B and C but the return types are incompatible.
Answer: D
NEW QUESTION # 41
Given:
What is the output?
- A. 0
- B. Exception
- C. 1
- D. 2
Answer: A
Explanation:
NEW QUESTION # 42
Given:
What is the result?
- A. abd
- B. abcd
- C. The compilation fails.
- D. adf
- E. abdf
Answer: B
NEW QUESTION # 43
Given the code fragment:
What is the result?
- A. false true true
- B. true false false
- C. false true false
- D. false false true
Answer: C
Explanation:
NEW QUESTION # 44
Given:
Which two constructors will compile and set the class field strings? (Choose two.)
- A. Option B
- B. Option E
- C. Option D
- D. Option C
- E. Option A
Answer: B,D
NEW QUESTION # 45
Given the code fragment:
You want to display the value of currency as $100.00.
Which code inserted on line 1 will accomplish this?
- A. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();
- B. NumberFormat formatter = NumberFormat.getInstance(locale);
- C. NumberFormat formatter = NumberFormat.getCurrency(locale);
- D. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
Answer: A
NEW QUESTION # 46
Given:
Which two changes need to be made to make this class compile? (Choose two.)
- A. Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {
- B. Change Line 1 to a class:public class API {
- C. Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;
- D. Change Line 1 to an abstract class:public abstract class API {
- E. Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;
Answer: B,C
NEW QUESTION # 47
Given an application with a main module that has this module-info.java file:
Which two are true? (Choose two.)
- A. To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.
- B. A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.
- C. A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.
- D. An implementation of country.countryDetails can be added to the main module.
- E. To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.
Answer: C,E
NEW QUESTION # 48
Given:
What is the result?
- A. The compilation fails at line 9.
- B. The compilation fails at line 8.
- C. Hello World
- D. The compilation fails at line 2.
Answer: C
Explanation:
NEW QUESTION # 49
Given:
Which is true about line 1?
- A. If the value is not present, a NullPointerException is thrown at run time.
- B. If the value is not present, nothing is done.
- C. If the value is not present, a NoSuchElementException is thrown at run time.
- D. It always executes the System.out::print statement.
Answer: B
Explanation:
NEW QUESTION # 50
Given:
What is the result?
- A. The compilation fails due to an error in line 2.
- B. 0
- C. 1
- D. The compilation fails due to an error in line 4.
- E. The compilation fails due to an error in line 5.
- F. The compilation fails due to an error in line 3.
- G. The compilation fails due to an error in line 1.
Answer: C
NEW QUESTION # 51
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Java is one of the most popular programming languages in the world, and Java SE 11 is the latest version of Java. 1Z0-819 exam is based on Java SE 11, which means that it covers all the new features and enhancements that have been introduced in this version of Java. Passing 1Z0-819 exam is a great way for Java developers to demonstrate their expertise in the latest version of Java.
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