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Newly Released 1z1-819 Dumps for Oracle Java SE Certified
Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in ORACLE 1Z0-006 exam dumps:
- Annotations
- Working with Java data types
- Java Platform Module System
- Database Applications with JDBC
- Java I/O API
- Java Object-Oriented Approach
- Working with Arrays and Collections
NEW QUESTION 112
Given:
Which three classes successfully override showFirst ()?
A)
B)
C)
D)
E)
F)
- A. Option D
- B. Option B
- C. Option A
- D. Option F
- E. Option E
- F. Option C
Answer: F
NEW QUESTION 113
Which two safely validate inputs? (Choose two.)
- A. Accept only valid characters and input values.
- B. Modify the input values, as needed, to pass validation.
- C. Delegate numeric range checking of values to the database.
- D. Assume inputs have already been validated.
- E. Use trusted domain-specific libraries to validate inputs.
Answer: A,C
NEW QUESTION 114
Given:
It is required that if p instanceof Pairthen p.isValid()returns true.
Which is the smallest set of visibility changes to insure this requirement is met?
- A. leftand rightmust be private.
- B. isValidmust be public.
- C. setLeftand setRightmust be protected.
- D. left, right, setLeft, and setRightmust be private.
Answer: B
NEW QUESTION 115
Given:
Assume the file on path does not exist. What is the result?
- A. Exception
- B. /u01/work/filestore.txt is deleted.
- C. The compilation fails.
- D. /u01/work/filestore.txt is not deleted.
Answer: C
Explanation:
NEW QUESTION 116
Given:
and the commands:
What is the result on execution of these commands?
Test.class - > java.sql -> java.base
- A. On execution, the jdepscommand displays an error.
Test.class -> java.base - B. Test.class - > java.sql
Test.class -> java.base - C. Test.class - > java.sql
java.sql -> java.base - D.
Answer: B
NEW QUESTION 117
Given:
Which three are correct? (Choose three.)
- A. f1.foo(li) prints Hello world!
- B. b1.foo(li) prints Hello world!
- C. f2.foo(li) prints Bonjour le monde!
- D. f2.foo(li) prints Hola Mundo!
- E. f1.foo(li) prints Bonjour le monde!
- F. f2.foo(li) prints Hello world!
- G. f1.foo(li) prints Hola Mundo!
- H. b1.foo(li) prints Bonjour le monde!
- I. b1.foo(li) prints Hola Mundo!
Answer: B,E,I
NEW QUESTION 118
Given the code fragment:
Which two code snippets inserted independently inside print method print Mondial: domainmodal?
- A. prefix + getName
- B. Main.prefix + Main.name
- C. prefix + Main, name
- D. Main.prefix + Main.getName()
- E. new Main (} .prefix + new Main().name
- F. prefix + name
Answer: C,E
NEW QUESTION 119
Given:
What is the output?
- A. I am an array
- B. I am an object
- C. I am an object array
- D. The compilation fails due to an error in line 1.
Answer: B
NEW QUESTION 120
Given:
What is the result?
- A. NullPointerException is thrown at line 4.
- B. A compilation error occurs.
- C. Hello
- D. NullPointerException is thrown at line 10.
Answer: C
Explanation:
NEW QUESTION 121
Given:
Which loop incurs a compile time error?
- A. the loop starting line 3
- B. the loop starting line 7
- C. the loop starting line 11
- D. the loop starting line 14
Answer: D
NEW QUESTION 122
Consider this method declaration:
A) "SET SESSION AUTHORIZATION " + user
B) "SET SESSION AUTHORIZATION " + stmt.enquoteIdentifier(user)
Is A or B the correct replacement for <EXPRESSION> and why?
- A. A and B are functionally equivalent.
- B. A, because it sends exactly the value of user provided by the calling code.
- C. A, because it is unnecessary to enclose identifiers in quotes.
- D. B, because enquoting values provided by the calling code prevents SQL injection.
- E. B, because all values provided by the calling code should be enquoted.
Answer: B
NEW QUESTION 123
Assuming the Widget class has a getPrice method, this code does not compile:
Which two statements, independently, would allow this code to compile? (Choose two.)
- A. Replace line 1 with List<Widget> widgetStream = widgets.stream();.
- B. Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).
- C. Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.
- D. Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
Answer: C,D
NEW QUESTION 124
Given:
Which one is correct?
- A. An IllegalThreadStateException is thrown at run time.
- B. The compilation fails.
- C. Four threads are created.
- D. Three threads are created.
Answer: A
Explanation:
NEW QUESTION 125
Given:
What is the result?
- A. Hat at store 4
- B. Hat at store 1
- C. At once 1
- D. An indexOutofBoundsException is thrown at runtime.
- E. At once 0
Answer: B
NEW QUESTION 126
Given TripleThis.java:
Compiling TripleThis.java gives this compiler warning:
Note: TripleThis.java uses unchecked or unsafe operations.
Which two replacements done together remove this compiler warning?
- A. Replace line 9 with function<Integer>, Integer> = X -> { return (integer) x * 3; }.
- B. Replace line 12 with public static <T> void printValue (Function<T, T> f, T num ) {,
- C. Replace line 9 with function<Integer> tripler = x-> - { return (Integer) X * 3 ; }.
- D. Replace line 12 with public static int printValue function<Integer, Integer>, f, T num {.
- E. Replace line 12 with public static void printValue function<Integer> f, int num) {.
Answer: C,D
NEW QUESTION 127
Given the code fragment:
What is the result?
- A. abc def
- B. ad be cf
- C. The compilation fails.
- D. An ArrayIndexOutOfBoundsException is thrown at runtime.
- E. ab cd ef
Answer: B
NEW QUESTION 128
......
Who should take the Java SE 11 Developer Exam Number: 1Z0-819
This exam helps students to understand the basic relational database concepts. Moreover, it will teach the students about data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Moreover, with this project-based learning techniques, students will be able to create and work with projects to design, implement, and demonstrate a database solution for a business or organization.
Certification Path for Java SE 11 Developer Exam Number: 1Z0-819
Java SE 11 Developer Exam Number: 1Z0-819 is a fundamental exam. Successful completion by candidates will allow them to achieve Oracle Certified Professional: Java SE 11 Developer.
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