[Mar-2026] Updated Oracle 1Z0-819 Dumps – PDF & Online Engine
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NEW QUESTION # 66
Given these two classes:
And given this fragment:
Which describes the fragment?
- A. It is subject to deadlock.
- B. It is subject to livelock.
- C. It throws IllegalMonitorStateException.
- D. The code does not compile.
Answer: D
NEW QUESTION # 67
Assume ds is a DataSource and the EMP table is defined appropriately.
What does executing this code fragment do?
- A. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', 'HR')
- B. throws a SQLException
- C. inserts one row (101, 'SMITH', 'HR')
- D. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', NULL)
Answer: C
NEW QUESTION # 68
Given:
What is the result?
- A. [A, B, C]
followed by an exception thrown on line 11. - B. [A, B, C]
[ B, C] - C. [A, B, C]
[A, B, C] - D. On line 9, an exception is thrown at run time.
Answer: C
NEW QUESTION # 69
Given this enum declaration:
Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?
- A. static String getFirstLetter() { return A.toString(); }
- B. static String getFirstLetter() { return Alphabet.values()[1].toString(); }
- C. String getFirstLetter() { return A.toString(); }
- D. final String getFirstLetter() { return A.toString(); }
Answer: A
NEW QUESTION # 70
Given:
What will secure this code from a potential Denial of Service condition?
- A. After Line 3, add dataReader.close().
- B. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.
- C. On Line 3, enclose processData(dataReader) with try with resources.
- D. On Line 1, use try with resources when opening each dataReader.
- E. After Line 4, add indexReader.close().
Answer: C
NEW QUESTION # 71
Given:
Which statement on line 1 enables this code to compile?
- A. Function<int, int> f = n > n * 2;
- B. Function<Integer> f = n > n * 2;
- C. Function<int> f = n > n * 2;
- D. Function<Integer, Integer> f = n > n * 2;
- E. Function f = n > n * 2;
Answer: D
Explanation:
NEW QUESTION # 72
Which two modules include APIs in the Java SE Specification? (Choose two.)
- A. jdk.httpserver
- B. javafx
- C. jdk.jartool
- D. java.logging
- E. java.desktop
Answer: A,D
NEW QUESTION # 73
Given:
Which expression when added at line 1 will produce the output of 1.17?
- A. float z = Math.round((float)x/y*100)/(float)100;
- B. float z = Math.round((int)(x/y),2);
- C. float z = (float)(Math.round((float)x/y*100)/100);
- D. float z = Math.round((float)x/y,2);
Answer: A
Explanation:
NEW QUESTION # 74
Given:
executed with this command:
java Main one two three
What is the output of this class?
- A. 1) one
- B. A java.lang.ArrayIndexOutOfBoundsException is thrown.
- C. nothing
- D. 1) one2) two3) three
- E. The compilation fails.
Answer: D
NEW QUESTION # 75
Given:
What is the result?
- A. 10126 3
- B. 6910 3
- C. 6104 3
- D. 0
Answer: C
Explanation:
NEW QUESTION # 76
Given:
Which two interfaces can be used in lambda expressions? (Choose two.)
- A. MyInterface4
- B. MyInterface2
- C. MyInterface1
- D. MyInterface5
- E. MyInterface3
Answer: B,D
NEW QUESTION # 77
Given:
Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)
- A. public ArrayList<Number> foo(Set<CharSequence> m) { ... }
- B. public List<Integer> foo(Set<CharSequence> m) { ... }
- C. public List<Object> foo(Set<CharSequence> m) { ... }
- D. public ArrayList<Integer> foo(Set<String> m) { ... }
- E. public List<Integer> foo(Set<String> m) { ... }
- F. public List<Integer> foo(TreeSet<String> m) { ... }
Answer: A,F
NEW QUESTION # 78
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. Add @Override annotation in line 2.
- D. Remove abstract keyword in line 1.
Answer: C
Explanation:
NEW QUESTION # 79
Which two statements are true about a class that is marked @Deprecated?
- A. Using the class will cause the Java compiler to give a warning.
- B. There Is always another class that can be used Instead of the deprecated class.
- C. The class cannot be extended.
- D. The author of the class wants to discourage people from using the class in any way.
- E. Using the class Is guaranteed to cause errors at runtime.
Answer: A,D
NEW QUESTION # 80
Given:
What is the result?
- A. 1.99,2.99,0.0
- B. The compilation fails.
- C. 1.99,2.99,0
- D. 1.99,2.99
Answer: A
NEW QUESTION # 81
Given:
What is the result?
- A. The compilation fails due to an error in line 3.
- B. 0
- C. The compilation fails due to an error in line 2.
- D. 1
- E. The compilation fails due to an error in line 1.
- F. The compilation fails due to an error in line 4.
- G. The compilation fails due to an error in line 5.
Answer: B
NEW QUESTION # 82
Given:
What is the result?
- A. 2,34,34,5
- B. 2,34,54,5
- C. 2,34,54,3
- D. 2,54,54,5
Answer: D
Explanation:
NEW QUESTION # 83
Given the code fragment:
What is the output?
- A. [-1, -2, -3]
- B. The compilation fails.
- C. A runtime exception is thrown.
- D. [-3, -2, -1]
Answer: C
NEW QUESTION # 84
Given:
What is true?
- A. This may not print the same result each time the program runs.
- B. The compilation fails.
- C. A NoSuchElementExceptionis thrown at run time.
- D. This should print the same result each time the program runs.
Answer: A
Explanation:
NEW QUESTION # 85 
A)
B)
C)
D)
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Answer: B
NEW QUESTION # 86
Given:
What is the result?
- A. Dr. Who
- B. Dr. Null
- C. null
- D. An exception is thrown at runtime.
Answer: C
Explanation:
NEW QUESTION # 87
......
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