[Oct-2023] Oracle Java SE 1z1-819 Exam Practice Test Questions Dumps Bundle! [Q109-Q130]

[Oct-2023] Oracle Java SE 1z1-819 Exam Practice Test Questions Dumps Bundle!

2023 Updated 1z1-819 PDF for the 1z1-819 Tests Free Updated Today!

NEW QUESTION # 109
Given:

Which two are correct? (Choose two.)

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

Answer: A,C

Explanation:

NEW QUESTION # 110
Given:
/code/a/Test.java
containing:

and
/code/b/Best.java
containing:
package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

A. java /code/a/Test.java /code/b/Best.java
B. javac -d /code /code/a/Test.java /code/b/Best.java
C. javac -d /code /code/a/Test.java
D. java -cp /code a.Test
E. java /code/a/Test.java
F. javac -d /code /code/a/Test

Answer: B

NEW QUESTION # 111
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. Replace the code in line 2 with Car ob = new Car();
C. Remove abstract keyword in line 1.
D. Add @Override annotation in line 2.

Answer: D

Explanation:

NEW QUESTION # 112
Given:

What is the result?

A. b3
B. 0
C. 1
D. The compilation fails due to an error in line 1.
E. b1
F. b2
G. 2

Answer: C

Explanation:

NEW QUESTION # 113
Given:

Which three classes successfully override printOne()? (Choose three.)

A. Option C
B. Option D
C. Option A
D. Option E
E. Option B
F. Option F

Answer: A,B,C

NEW QUESTION # 114
Given:

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

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

Answer: B

NEW QUESTION # 115
Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

A. In Line 2, change the access modifier to protectedprotected class Main {
B. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
C. In Line 1, remove the access modifierPerson() {
D. In Line 1, change the access modifier to privateprivate Person() {
E. In Line 1, change the access modifier to publicpublic Person() {

Answer: B,E

NEW QUESTION # 116
Given:

What is the result?

Answer: A

NEW QUESTION # 117
Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?
A)

B)

C)

D)

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

Answer: A

NEW QUESTION # 118
Given:

What is the result?

A. 42=(x+y)=6
B. 42=(x+y)=42
C. An exception is thrown at runtime.
D. 6=(x+y)=42
E. 6=(x+y)=6

Answer: D

Explanation:

NEW QUESTION # 119
Given:

What is the result?

A. 0
B. 1
C. 2
D. 3

Answer: B

NEW QUESTION # 120
Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

A. MyInterface1
B. MyInterface5
C. MyInterface3
D. MyInterface2
E. MyInterface4

Answer: B,D

NEW QUESTION # 121
You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.

What action should you take?

A. Nothing, because it is not related to the bug you are investigating.
B. Nothing, because it is an internal tool and not exposed to the public.
C. File a security bug against the tool referencing the excessive permission granted.
D. Remove the grant because it is excessive.
E. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.

Answer: C

NEW QUESTION # 122
Given the declaration:

Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

A. @Resource()
B. @Resource
C. @Resource("Customer1")
D. @Resource({"Customer1", "Customer2"})
E. @Resource(value={{}})

Answer: C,D

NEW QUESTION # 123
What is the result?

A. 0
B. 1
C. An ArrayIndexOutOfBoundsException is thrown at runtime.
D. 2
E. 3

Answer: B

NEW QUESTION # 124
Which is the correct order of possible statements in the structure of a Java class file?

A. package, class, import
B. package, import, class
C. import, class, package
D. class, package, import
E. import, package, class

Answer: B

NEW QUESTION # 125
Given:

What will secure this code from a potential Denial of Service condition?

A. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.
B. On Line 1, use try with resources when opening each dataReader.
C. After Line 3, add dataReader.close().
D. After Line 4, add indexReader.close().
E. On Line 3, enclose processData(dataReader) with try with resources.

Answer: E

NEW QUESTION # 126
A company has an existing Java app that includes two Java 8 jar files, sales-3.10. jar and clients-10.2.jar.
The jar file ,sales -8, 10, jar reference packages in clients -10.2 jar, but clients-10.2 jar does not reference packages in sales -8.10, jar.
They have decided to modularize clients-10.2.jar.
Which module-info. Java file would work for the new library version clients-10.3 jar?
A)

B)

C)

D)