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Oracle 1z1-819 certification exam is an excellent way for Java developers to demonstrate their proficiency in Java SE 11 development and advance their careers. By preparing thoroughly for the exam and earning the certification, professionals can gain a competitive edge in the job market and access a range of valuable resources and benefits.
Passing the Oracle 1Z0-819 certification exam demonstrates that a Java developer has a strong understanding of Java SE 11 and is capable of developing robust and efficient Java applications. Java SE 11 Developer certification can help developers stand out in a competitive job market and can lead to new job opportunities and higher salaries.
NEW QUESTION # 69
Given:
You want to obtain the Filechannel object on line 1.
Which code fragment will accomplish this?
A)
B)
C)
D)
- A. Option B
- B. Option A
- C. Option D
- D. Option C
Answer: B
NEW QUESTION # 70
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 6
- B. after line 10
- C. after line 8
- D. after line 5
Answer: A
Explanation:
NEW QUESTION # 71
Given:
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: E
NEW QUESTION # 72
Given:
What is the output?
- A. Bonjour le monde!Bonjour le monde!
- B. Hello world!Hello world!
- C. Bonjour le monde!Hello world!
- D. Hello world!Bonjour le monde!
Answer: C
Explanation:
NEW QUESTION # 73
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.
Answer: D
NEW QUESTION # 74
Given:
What is the expected result of javac?
- A. javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class
- B. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist
- C. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang
- D. javac compiles Mycar.java without errors or warnings.
Answer: D
NEW QUESTION # 75
Given:
What is the result?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 76
Given:
What is the result?
- A. Ans : a
- B. A java.util.NoSuchElementException is thrown at run time.
- C. Ans :
- D. The compilation fails.
Answer: B
NEW QUESTION # 77
Which line of code results in a compilation error?
- A. line n2
- B. line n3
- C. line n4
- D. line n1
Answer: C
NEW QUESTION # 78
Given:
What is the result?
- A. The compilation fails at line 9.
- B. The compilation fails at line 2.
- C. The compilation fails at line 8.
- D. Hello World
Answer: D
Explanation:
NEW QUESTION # 79
Given:
What is the result?
- A. 0
- B. 0 4 9
- C. 1
- D. nothing
Answer: D
NEW QUESTION # 80
Given:
Which is true?
- A. System.out is the standard output stream. The stream is open only when System.out is called.
- B. System.in is the standard input stream. The stream is already open.
- C. System.out is an instance of java.io.OutputStream by default.
- D. System.in cannot reassign the other stream.
Answer: B
NEW QUESTION # 81
Given:
Which one is correct?
- A. Four threads are created.
- B. Three threads are created.
- C. An IllegalThreadStateException is thrown at run time.
- D. The compilation fails.
Answer: C
Explanation:
NEW QUESTION # 82
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 -cp /code a.Test
- B. java /code/a/Test.java /code/b/Best.java
- C. javac -d /code /code/a/Test
- D. javac -d /code /code/a/Test.java
- E. java /code/a/Test.java
- F. javac -d /code /code/a/Test.java /code/b/Best.java
Answer: F
NEW QUESTION # 83
Given:
What is the result?
- A. null
- B. Dr. Who
- C. Dr. Null
- D. An exception is thrown at runtime.
Answer: A
Explanation:
NEW QUESTION # 84
Given:
What is the result?
- A. appleorangegrapelemonapricotwatermelon
- B. nothing
- C. appleapricotgrapelemonorangewatermelon
- D. watermelonorangelemongrapeapricotapple
Answer: D
Explanation:
NEW QUESTION # 85
Given:
Why does D cause a compilation error?
- A. D extends more than one interface.
- B. D does not define any method.
- C. D inherits a() from B and C but the return types are incompatible.
- D. D inherits a() only from C.
Answer: C
NEW QUESTION # 86
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 -cp /code a.Test
- B. java /code/a/Test.java /code/b/Best.java
- C. javac -d /code /code/a/Test
- D. javac -d /code /code/a/Test.java
- E. java /code/a/Test.java
- F. javac -d /code /code/a/Test.java /code/b/Best.java
Answer: F
NEW QUESTION # 87
Given:
Which three are true? (Choose three.)
- A. b1.foo(c) prints Ola Mundo!
- B. f1.foo(c) prints Hello world!
- C. f2.foo(c) prints Ola Mundo!
- D. f1.foo(c) prints Ola Mundo!
- E. f1.foo(c) prints Bonjour le monde!
- F. b1.foo(c) prints Hello world!
- G. f2.foo(c) prints Hello world!
- H. f2.foo(c) prints Bonjour le monde!
- I. b1.foo(c) prints Bonjour le monde!
Answer: A,B,H
NEW QUESTION # 88
Given the declaration:
Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)
- A. @Resource(name="Customer1", priority=100)
- B. @Resource(priority=100)
- C. @Resource
- D. @Resource(priority=0)
- E. @Resource(name="Customer1")
Answer: B,D
NEW QUESTION # 89 
Why does this compilation fail?
- A. In method x. print (Collection), system. Out :: prints is an invalid Java identifier.
- B. The method x. print (object) is not accessible to Y.
- C. The method Y. print (object...) cannot override the final method x.print (object....).
- D. The method Y. print (object) does not call the method super.print (object)
- E. The method print (object) and the method print (object...) are duplicates of each other.
Answer: E
NEW QUESTION # 90
Given:
Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)
- A. setCCount(c) = cCount;
- B. setGCount(g);
- C. cCount = setCCount(c);
- D. tCount = tCount;
- E. aCount = a;
Answer: D,E
NEW QUESTION # 91
Given:
Which two lines inserted in line 1 will allow this code to compile? (Choose two.)
- A. void walk(){}
- B. protected void walk(){}
- C. private void walk(){}
- D. abstract void walk();
- E. public abstract void walk();
Answer: B,E
NEW QUESTION # 92
Given:
What is the result?
- A. 0
- B. nothing
- C. It fails to compile.
- D. A java.lang.IllegalArgumentException is thrown.
- E. 1
Answer: C
Explanation:
NEW QUESTION # 93
......
Oracle 1Z0-819 Exam is a comprehensive exam that requires a thorough understanding of Java programming concepts and principles. 1Z0-819 exam consists of 80 multiple-choice questions that need to be completed within 180 minutes. 1Z0-819 exam is available in several languages, including English, Japanese, and Simplified Chinese. Upon passing the exam, candidates will receive the Oracle Certified Professional: Java SE 11 Developer certification, which is recognized globally and demonstrates their proficiency in Java programming. Java SE 11 Developer certification can help developers advance their careers and open up new opportunities in the IT industry.
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