[Dec-2021] Pass 1z1-819 Exam in First Attempt Updated1z1-819 Pass4cram Exam Question
Oracle Java SE Dumps 1z1-819 Exam for Full Questions - Exam Study Guide
NEW QUESTION 88
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. Remove the grant because it is excessive.
- B. Nothing, because it is not related to the bug you are investigating.
- C. File a security bug against the tool referencing the excessive permission granted.
- D. Nothing, because it is an internal tool and not exposed to the public.
- E. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
Answer: C
NEW QUESTION 89
Given:
What is the type of x?
- A. String
- B. char
- C. List<String>
- D. List<Character>
Answer: A
NEW QUESTION 90
Given:
executed using this command:
java Myclass My Car is red
What is the output of this class?
- A. My--is--java
- B. Car--red--My
- C. java--Myclass--My
- D. Myclass--Car--red
- E. My--Car--is
Answer: B
NEW QUESTION 91
Given:
Which two statements are valid to be written in this interface? (Choose two.)
- A. public abstract void methodB();
- B. public void methodF(){System.out.println("F");}
- C. private abstract void methodC();
- D. final void methodE();
- E. public String methodD();
- F. final void methodG(){System.out.println("G");}
- G. public int x;
Answer: A,E
NEW QUESTION 92
Given:
What will secure this code from a potential Denial of Service condition?
- A. After Line 4, add indexReader.close().
- B. On Line 1, use try with resources when opening each dataReader.
- C. On Line 3, enclose processData(dataReader) with try with resources.
- D. After Line 3, add dataReader.close().
- E. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.
Answer: C
NEW QUESTION 93
Given:
What is the output?
- A. A compilation error is thrown.
- B. Message from Abstract Copier: Attempt00
- C. Message from Copier: Attempt00
- D. A runtime error is thrown.
Answer: A
NEW QUESTION 94
Given:
What must be added in line 1 to compile this class?
- A. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
- B. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
- C. catch(FileNotFoundException | IOException e) { }
- D. catch(IOException e) { }
- E. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
Answer: D
NEW QUESTION 95
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. Remove the grant because it is excessive.
- B. Nothing, because it is not related to the bug you are investigating.
- C. File a security bug against the tool referencing the excessive permission granted.
- D. Nothing, because it is an internal tool and not exposed to the public.
- E. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
Answer: C
NEW QUESTION 96
Given the Person class with age and name along with getter and setter methods, and this code fragment:
What will be the result?
- A. Tom Peter Aman
- B. Tom Aman Peter
- C. Aman Tom Peter
- D. Aman Peter Tom
Answer: D
NEW QUESTION 97
Given the code fragment:
What is the result?
A)
B)
C)
D)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: C
NEW QUESTION 98
Given the code fragment:
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
NEW QUESTION 99
Given:
Which would cause s to be AQCD?
- A. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");
- B. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");
- C. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");
- D. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");
Answer: A
NEW QUESTION 100
Which command line runs the main class com.acme.Main from the module com.example?
- A. java -classpath com.example.jar com.acme.Main
- B. java -classpath com.example.jar -m com.example/com.acme.Main
- C. java --module-path mods com.example/com.acme.Main
- D. java --module-path mods -m com.example/com.acme.Main
Answer: B
NEW QUESTION 101
Given:
Which statement is true?
- A. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.
- B. All classes from the package java.time. are loaded for the class Diary.
- C. Only LocalDate class from java.time package is loaded.
- D. Tester must import java.time.LocalDate in order to compile.
Answer: A
NEW QUESTION 102
Which interface in the java.util.function package can return a primitive type?
- A. Supplier
- B. ToDoubleFunction
- C. BiFunction
- D. LongConsumer
Answer: B
NEW QUESTION 103
Given:
What is the result?
- A. Joe Bloggs
- B. null
- C. p1
- D. The compilation fails due to an error in line 1.
Answer: D
Explanation:
NEW QUESTION 104
Given:
What is the result?
- A. It throws a runtime exception.
- B. Value of Euler = "2.71828"
- C. The code does not compile.
- D. Value of Euler = 2.71828
Answer: C
NEW QUESTION 105
Given:
Which two interfaces can be used in lambda expressions? (Choose two.)
- A. MyInterface5
- B. MyInterface4
- C. MyInterface2
- D. MyInterface1
- E. MyInterface3
Answer: A,C
NEW QUESTION 106
Given:
Which two changes need to be made to make this class compile? (Choose two.)
- A. Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {
- B. Change Line 1 to a class:public class API {
- C. Change Line 1 to an abstract class:public abstract class API {
- D. Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;
- E. Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;
Answer: B,D
NEW QUESTION 107
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)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: C
NEW QUESTION 108
Given:
Which three are true? (Choose three.)
- A. b1.foo(c) prints Ola Mundo!
- B. b1.foo(c) prints Hello world!
- C. b1.foo(c) prints Bonjour le monde!
- D. f1.foo(c) prints Ola Mundo!
- E. f2.foo(c) prints Hello world!
- F. f2.foo(c) prints Bonjour le monde!
- G. f2.foo(c) prints Ola Mundo!
- H. f1.foo(c) prints Hello world!
- I. f1.foo(c) prints Bonjour le monde!
Answer: A,F,H
NEW QUESTION 109
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 110
Which two statements are correct about modules in Java? (Choose two.)
- A. module-info.java cannot be empty.
- B. module-info.java can be placed in any folder inside module-path.
- C. By default, modules can access each other as long as they run in the same folder.
- D. A module must be declared in module-info.java file.
- E. java.base exports all of the Java platforms core packages.
Answer: D,E
NEW QUESTION 111
Which three guidelines are used to protect confidential information? (Choose three.)
- A. Treat user input as normal information.
- B. Limit access to objects holding confidential information.
- C. Transparently handle information to improve diagnostics.
- D. Manage confidential and other information uniformly.
- E. Validate input before storing confidential information.
- F. Clearly identify and label confidential information.
- G. Encapsulate confidential information.
Answer: B,C,E
NEW QUESTION 112
......
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