What High Value 1Z0-819 Simulations Is

NEW QUESTION 1
Given:

What is the output?

• A. :APPLE:ORANGE:BANANAappleorangebanana
• B. :APPLE:ORANGE:BANANA
• C. APPLE:apple ORANGE:orange BANANA:banana
• D. appleorangebanana:APPLE:ORANGE:BANANA
• E. apple:APPLE orange:ORANGE banana:BANANA

Answer: E

Explanation:

NEW QUESTION 2
Given:

What is the result?

• A. Map: 0 Keys: 0 Values: 0
• B. The compilation fails.
• C. Map: 4 Keys: 4 Values: 4
• D. Map: 4 Keys: 0 Values: 0
• E. Map: 0 Keys: 4 Values: 4

Answer: D

Explanation:

NEW QUESTION 3
Given:

Which two independent changes will make the Main class compile? (Choose two.)

• A. Move the entire Student class declaration to a separate Java file, Student.java.
• B. Change line 2 to public Student(String classname).
• C. Change line 1 to public class Student {.
• D. Change line 3 to Student student = new Student(“Biology”);.
• E. Change line 1 to static class Student {.

Answer: BD

Explanation:

NEW QUESTION 4
Given:

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

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

Answer: A

NEW QUESTION 5
Which code fragment prints 100 random numbers?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: D

NEW QUESTION 6
Given:

Assuming that this code compiles correctly, which three statements are true? (Choose three.)

• A. B cannot be abstract.
• B. B is a subtype of A.
• C. A cannot be abstract.
• D. A cannot be final.
• E. B cannot be final.
• F. A is a subtype of B.

Answer: ABD

NEW QUESTION 7
Which two statements are true about Java modules? (Choose two.)

• A. Modular jars loaded from --module-path are automatic modules.
• B. Any named module can directly access all classes in an automatic module.
• C. Classes found in –classpath are part of an unnamed module.
• D. Modular jars loaded from –classpath are automatic modules.
• E. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

Answer: AC

NEW QUESTION 8
Given:

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 9
Given:

Which one is correct?

• A. An IllegalThreadStateException is thrown at run time.
• B. Three threads are created.
• C. The compilation fails.
• D. Four threads are created.

Answer: A

Explanation:

NEW QUESTION 10
Given:

Which statement on line 1 enables this code fragment to compile?

• A. Function function = String::toUpperCase;
• B. UnaryOperator function = s > s.toUpperCase();
• C. UnaryOperator<String> function = String::toUpperCase;
• D. Function<String> function = m > m.toUpperCase();

Answer: C

Explanation:

NEW QUESTION 11
Given:

And the command: java Main Helloworld What is the result ?

• A. Input: Echo:
• B. Input: Helloworld Echo: Helloworld
• C. Input:Then block until any input comes from System.in.
• D. Input:Echo: Helloworld
• E. A NullPointerException is thrown at run time.

Answer: C

Explanation:

NEW QUESTION 12
Given: Automobile.java

Car.java

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:

NEW QUESTION 13
Given:

executed using command:
java Hello “Hello World” Hello World What is the output?

• A. An exception is thrown at runtime.
• B. Hello WorldHello World
• C. Hello World Hello World
• D. Hello WorldHelloWorld
• E. HelloHello WorldHelloWorld

Answer: C

NEW QUESTION 14
Given this enum declaration:

Examine this code: System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

• A. public String toString() { return String.valueOf(ALPHA.v); }
• B. public String toString() { return String.valueOf(Letter.values()[1]); }
• C. public String toString() { return String.valueOf(v); }
• D. String toString() { return “200”; }

Answer: C

Explanation:

NEW QUESTION 15
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

• A. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));
• B. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
• C. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
• D. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);

Answer: A

NEW QUESTION 16
Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

• A. protected void walk(){}
• B. void walk(){}
• C. abstract void walk();
• D. private void walk(){}
• E. public abstract void walk();

Answer: AE

NEW QUESTION 17
Given:

Which option should you choose to enable the code to print Something happened?

• A. Add extends GeneralException on line 1.Add extends Exception on line 2.
• B. Add extends SpecificException on line 1.Add extends GeneralException on line 2.
• C. Add extends Exception on line 1.Add extends Exception on line 2.
• D. Add extends Exception on line 1.Add extends GeneralException on line 2.

Answer: D

Explanation:

NEW QUESTION 18
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