[2022] Pass Oracle 1Z0-819 Premium Files Test Engine pdf - Free Dumps Collection
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Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in ORACLE 1Z0-006 exam dumps:
- Java Platform Module System
- Database Applications with JDBC
- Working with Arrays and Collections
- Java Object-Oriented Approach
- Annotations
- Java I/O API
- Working with Java data types
Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in the ORACLE 1Z0-006 dumps:
- Handle text using String and StringBuilder classes
- Use local variable type inference, including as lambda parameters
- Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
NEW QUESTION 95
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 96
Given:
Which two interfaces can be used in lambda expressions? (Choose two.)
- A. MyInterface2
- B. MyInterface3
- C. MyInterface4
- D. MyInterface1
- E. MyInterface5
Answer: A,E
NEW QUESTION 97
Which is the correct order of possible statements in the structure of a Java class file?
- A. package, import, class
- B. import, package, class
- C. package, class, import
- D. import, class, package
- E. class, package, import
Answer: A
NEW QUESTION 98
Given:
What is the result?
- A. 3 5 3 3
- B. 3 3 3 3
- C. 5 5 3 3
- D. 3 5 3 5
Answer: A
Explanation:
NEW QUESTION 99
Examine this excerpt from the declaration of the java.se module:
What does the transitive modifier mean?
- A. Any module that attempts to require the java.se module actually requires the java.sql module instead.
- B. Only a module that requires the java.se module is permitted to require the java.sql module.
- C. Any module that requires the java.se module does not need to require the java.sql module.
- D. Any module that requires the java.sql module does not need to require the java.se module.
Answer: B
NEW QUESTION 100
Given the code fragment:
What is the result?
- A. The compilation fails at line 16.
- B. The compilation fails at line
- C. 0
- D. The compilation fails at line 13.
- E. 1
Answer: C
NEW QUESTION 101
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. It always executes the System.out::print statement.
- D. If the value is not present, a NoSuchElementException is thrown at run time.
Answer: B
Explanation:
NEW QUESTION 102
Given:
After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?
- A. after line 10
- B. after line 6
- C. after line 8
- D. after line 5
Answer: B
Explanation:
NEW QUESTION 103
Given:
What is the output?
- A. 0
- B. Exception
- C. 1
- D. 2
Answer: D
Explanation:
NEW QUESTION 104
Given:
Which two are correct? (Choose two.)
- A. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
- B. The program prints 1 4 2 3, but the order is unpredictable.
- C. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
- D. The output will be exactly 2 1 3 4 5.
- E. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
Answer: B,E
Explanation:
NEW QUESTION 105
Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?
module PrintServiceProvider {
- A. requires PrintServiceAPI;
uses com.provider.PrintService;
}
module PrintServiceProvider { - B. requires PrintServiceAPI;
provides org.printservice.spi.Print with
com.provider.PrintService;
}
module PrintServiceProvider { - C. requires PrintServiceAPI;
exports org.printservice.spi.Print with
com.provider.PrintService;
} - D. requires PrintServiceAPI;
exports org.printservice.spi;
}
module PrintServiceProvider {
Answer: D
NEW QUESTION 106
There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?
A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: D
NEW QUESTION 107
Given:
Which would cause s to be AQCD?
- A. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");
- B. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");
- C. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");
- D. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");
Answer: C
NEW QUESTION 108
Given:
and omitting the throws FooException clause results in a compilation error.
Which statement is true about FooException?
- A. The body of foo can throw FooException or one of its subclasses.
- B. The body of foo can only throw FooException.
- C. FooException is a subclass of RuntimeError.
- D. FooException is unchecked.
Answer: A
NEW QUESTION 109
Given:
and
Which four identifiers from the Fooand Barclasses are visible at line 1? (Choose four.)
- A. c
- B. h
- C. i
- D. j
- E. e
- F. B
- G. g
- H. d
- I. A
- J. f
Answer: A,F,G,I
NEW QUESTION 110
......
Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in the ORACLE 1Z0-006 dumps:
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Declare and instantiate Java objects including nested class objects, and explain objectsâ - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Understand variable scopes, apply encapsulation and make objects immutable
- Create and use subclasses and superclasses, including abstract classes
- Secure resource access including filesystems, manage policies and execute privileged code
- Initialize objects and their members using instance and static initialiser statements and constructors
- Define and use fields and methods, including instance, static and overloaded methods
- Create and use enumerations
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