[Sep-2022] Dumps Brief Outline Of The 1Z0-819 Exam - TestkingPass [Q85-Q101]

[Sep-2022] Dumps Brief Outline Of The 1Z0-819 Exam - TestkingPass

1Z0-819 Training & Certification Get Latest Oracle Java SE

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

• Create and use subclasses and superclasses, including abstract classes
• Define and use fields and methods, including instance, static and overloaded methods
• Create and use enumerations
• Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
• Initialize objects and their members using instance and static initialiser statements and constructors

 

NEW QUESTION 85
Given:

Which is true?

• A. System.out is an instance of java.io.OutputStream by default.
• B. System.in is the standard input stream. The stream is already open.
• C. System.out is the standard output stream. The stream is open only when System.out is called.
• D. System.in cannot reassign the other stream.

Answer: B

 

NEW QUESTION 86
Given:

Which two methods modify field values? (Choose two.)

• A. setGCount
• B. setACount
• C. setAllCounts
• D. setCCount
• E. setTCount

Answer: A,C

 

NEW QUESTION 87
Given:

What is required to make the Foo class thread safe?

• A. Move the declaration of lock inside the foo method.
• B. Replace the lock constructor call with new ReentrantLock (true).
• C. Make the declaration of lock static.
• D. No change is required.

Answer: B

 

NEW QUESTION 88
Which two statements set the default locale used for formatting numbers, currency, and percentages? (Choose two.)

• A. Locale.setDefault(Locale.Category.FORMAT, "zh-CN");
• B. Locale.setDefault("es", Locale.US);
• C. Locale.setDefault("en_CA");
• D. Locale.setDefault(Locale.Category.FORMAT, Locale.CANADA_FRENCH);
• E. Locale.setDefault(Locale.SIMPLIFIED_CHINESE);

Answer: C,D

 

NEW QUESTION 89
Given the declaration:

Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

• A. @Resource(priority=0)
• B. @Resource(name="Customer1")
• C. @Resource
• D. @Resource(name="Customer1", priority=100)
• E. @Resource(priority=100)

Answer: A,E

 

NEW QUESTION 90
Given:

and:

Which code, when inserted on line 10, prints the number of unique localities from the roster list?

• A. .map(e > e.getLocality())
  .collect(Collectors.toSet())
  .count();
• B. .map(Employee::getLocality)
  .distinct()
  .count();
• C. map(e > e.getLocality())
  .count();
• D. .filter(Employee::getLocality)
  .distinct()
  .count();

Answer: D

 

NEW QUESTION 91
Given:

What is the result?

• A. compilation error
• B. 0 5
• C. 6 13
• D. 5 12

Answer: A

Explanation:

 

NEW QUESTION 92
Given the code fragment:

What is the result?

• A. The compilation fails.
• B. ad be cf
• C. abc def
• D. An ArrayIndexOutOfBoundsException is thrown at runtime.
• E. ab cd ef

Answer: B

 

NEW QUESTION 93
Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A. All three readers have been closed.
• B. Only reader1 has been closed.
• C. The compilation fails.
• D. All three readers are still open.

Answer: C

 

NEW QUESTION 94
Given:

Which two are correct? (Choose two.)

• A. The program prints 1 4 2 3, but the order is unpredictable.
• B. The output will be exactly 2 1 3 4 5.
• C. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
• D. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
• E. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.

Answer: A,C

Explanation:

 

NEW QUESTION 95
Given:

What is the result?

• A. An exception is thrown at runtime.
• B. 0
• C. 1
• D. 2

Answer: B

Explanation:
Explanation
Graphical user interface, text, application, chat or text message Description automatically generated

 

NEW QUESTION 96
Which three initialization statements are correct? (Choose three.)

• A. float x = 1f;
• B. short sh = (short)'A';
• C. byte b = 10;
  char c = b;
• D. boolean false = (4 != 4);
• E. String contact# = "(+2) (999) (232)";
• F. int x = 12_34;
• G. int[][][] e = {{1,1,1},{2,2,2}};

Answer: A,B,F

 

NEW QUESTION 97
Given:

Assume the file on path does not exist. What is the result?

• A. /u01/work/filestore.txt is deleted.
• B. Exception
• C. The compilation fails.
• D. /u01/work/filestore.txt is not deleted.

Answer: C

Explanation:

 

NEW QUESTION 98
Given:

What must be added in line 1 to compile this class?

• A. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
• B. catch(FileNotFoundException | IOException e) { }
• C. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
• D. catch(IOException e) { }
• E. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }

Answer: D

 

NEW QUESTION 99
Given:

Which statement on line 1 enables this code to compile?

• A. Function<int, int> f = n > n * 2;
• B. Function<Integer> f = n > n * 2;
• C. Function<int> f = n > n * 2;
• D. Function f = n > n * 2;
• E. Function<Integer, Integer> f = n > n * 2;

Answer: E

Explanation:

 

NEW QUESTION 100
Which declaration of an annotation type is legal?
@interface Author {

• A. String name() default "";
  String date();
  }
  @interface Author extends Serializable {
• B. String name() default null;
  String date();
  }
  @interface Author {
• C. String name();
  String date default "";
  }
• D. String name() default "";
  String date();
  }
  @interface Author {
• E. String name();
  String date;
  }
  @interface Author {

Answer: A

 

NEW QUESTION 101
......

Oracle 1Z0-819 Exam Syllabus Topics:

Topic	Details
Topic 1	Implement serialization and deserialization techniques on Java objects Declare and instantiate Java objects including nested class objects
Topic 2	Create and use subclasses and superclasses, including abstract classes Use local variable type inference, including as lambda parameters
Topic 3	Understand variable scopes, apply encapsulation and make objects immutable Connect to and perform database SQL operations, process query results using JDBC API
Topic 4	Deploy and execute modular applications, including automatic modules Implement functional interfaces using lambda expressions
Topic 5	Secure resource access including filesystems, manage policies and execute privileged code Develop thread-safe code, using different locking mechanisms
Topic 6	Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting Sort collections and arrays using Comparator and Comparable interfaces
Topic 7	Develop code that mitigates security threats such as denial of service Use Java Streams to filter, transform and process data

How much Java SE 11 Developer Exam Number: 1Z0-819 costs

• No. of Questions: 60 Questions
• Length of Exam: 85 min
• Examination Name: Java SE 11 Developer Exam Number: 1Z0-819

 

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Oracle Java SE 1Z0-819 Real Exam Questions and Answers FREE Updated: https://drive.google.com/open?id=164Exn9qur6SVo_SnVyuQTAjwjrCpos1k