The answer is 1 2 3 . The for-each loop, also known as the enhanced for loop, iterates over each element in the array sequentially without using an index variable, printing each value followed by a space. This construct is designed for read-only traversal, meaning it accesses the elements directly from the array without modifying them, which is why all three original values appear in order. On the Oracle Java Foundations 1Z0-811 exam, this question tests your understanding of for-each loop array iteration as a cleaner alternative to traditional indexed loops, often appearing in questions that ask you to predict output or identify correct syntax. A common trap is assuming the loop modifies the array or that it can skip elements—remember, the for-each loop always visits every element from start to finish. Memory tip: think of the for-each loop as a conveyor belt—each item passes by exactly once, in the order it was placed.
1Z0-811 Arrays and Methods Practice Question
This 1Z0-811 practice question tests your understanding of arrays and methods. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
public class ArrayReturn {
public static int[] getArray() {
int[] a = {1, 2, 3};
return a;
}
public static void main(String[] args) {
int[] b = getArray();
b[0] = 99;
for (int v : getArray()) {
System.out.print(v + " ");
}
}
}
Refer to the exhibit.
public class ArrayReturn {
public static int[] getArray() {
int[] a = {1, 2, 3};
return a;
}
public static void main(String[] args) {
int[] b = getArray();
b[0] = 99;
for (int v : getArray()) {
System.out.print(v + " ");
}
}
}
A
Compilation error
Why wrong: The code compiles and runs without error.
B
1 2 3
Each call to getArray() creates a new array with values {1,2,3}. The modification of b affects the first array, but the second call returns a separate array, so the output is 1 2 3.
C
1 2 3 99
Why wrong: No extra numbers are printed; the for-each iterates over the three elements returned by getArray().
D
99 2 3
Why wrong: This would happen if the second call returned the same array object, but it does not.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
1 2 3
The code declares an array with elements 1, 2, 3, and then uses a for-each loop to iterate over the array, printing each element followed by a space. The loop does not modify the array, so the output is '1 2 3 '. Option B is correct because the for-each loop prints all elements in order.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Compilation error
Why it's wrong here
The code compiles and runs without error.
✓
1 2 3
Why this is correct
Each call to getArray() creates a new array with values {1,2,3}. The modification of b affects the first array, but the second call returns a separate array, so the output is 1 2 3.
Related concept
Read the scenario before looking for a memorised answer.
✗
1 2 3 99
Why it's wrong here
No extra numbers are printed; the for-each iterates over the three elements returned by getArray().
✗
99 2 3
Why it's wrong here
This would happen if the second call returned the same array object, but it does not.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the misconception that modifying the loop variable in a for-each loop changes the array, leading candidates to incorrectly expect the value 99 to appear in the output.
Detailed technical explanation
How to think about this question
The for-each loop (enhanced for loop) in Java uses an iterator internally for arrays, providing a read-only view of each element. Attempting to modify the loop variable does not affect the original array, which is why adding 99 inside the loop has no effect on the output. This behavior is defined in JLS §14.14.2.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Arrays and Methods — This question tests Arrays and Methods — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 1 2 3 — The code declares an array with elements 1, 2, 3, and then uses a for-each loop to iterate over the array, printing each element followed by a space. The loop does not modify the array, so the output is '1 2 3 '. Option B is correct because the for-each loop prints all elements in order.
What should I do if I get this 1Z0-811 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This 1Z0-811 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-811 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.