Quick Answer
The answer is 12. This result comes from using a Java for loop to sum array elements, where the enhanced for loop iterates over each integer in the array {1,2,3,4,5}, adding each value to a running total that starts at 0, producing a sum of 15, and then subtracting 3 to print 12. On the Oracle Java Foundations 1Z0-811 exam, this tests your understanding of both the enhanced for loop syntax and the order of operations in a simple accumulation pattern—a common trap is forgetting that the subtraction happens after the loop completes, not during each iteration. To avoid mistakes, remember that the loop fully processes the entire array before any code after the loop executes. A helpful memory tip: "Sum first, then subtract—the loop runs its full circuit."
This 1Z0-811 practice question tests your understanding of java basics and syntax. 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.
public class Test {
public static void main(String[] args) {
int a = 5;
int b = a++ + ++a;
System.out.println(b);
}
}Refer to the exhibit. What is the output?
public class Test {
public static void main(String[] args) {
int a = 5;
int b = a++ + ++a;
System.out.println(b);
}
}10
Why wrong: Incorrect. a++ uses original value, ++a increments then uses.
13
Why wrong: Incorrect. Sum is 12, not 13.
12
Correct. a++ gives 5, ++a gives 7.
11
Why wrong: Incorrect. Correct value is 12.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
12
The code initializes an integer array with values 1 through 5. The for loop iterates over each element using the enhanced for loop, and the variable 'x' takes on each value in sequence. The loop adds each element to the variable 'sum', which starts at 0. After processing all five elements (1+2+3+4+5), sum equals 15. Then, the code prints the value of 'sum' minus 3, which is 12. Option C is correct.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
10
Why it's wrong here
Incorrect. a++ uses original value, ++a increments then uses.
13
Why it's wrong here
Incorrect. Sum is 12, not 13.
12
Why this is correct
Correct. a++ gives 5, ++a gives 7.
Related concept
Read the scenario before looking for a memorised answer.
11
Why it's wrong here
Incorrect. Correct value is 12.
Common exam traps
The trap here is that candidates may misread the code and think the loop only sums a subset of elements, or they may incorrectly compute the sum (e.g., forgetting to include the last element) or misapply the subtraction, leading to a wrong answer like 10, 11, or 13.
Detailed technical explanation
The enhanced for loop (for-each) in Java internally uses an iterator for arrays, iterating over each element in order. The sum variable accumulates the total of all array elements. The final expression 'sum - 3' is evaluated after the loop completes, producing the output. This question tests understanding of array iteration, variable accumulation, and post-loop arithmetic in a single statement.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Java Basics and Syntax — This question tests Java Basics and Syntax — Read the scenario before looking for a memorised answer..
The correct answer is: 12 — The code initializes an integer array with values 1 through 5. The for loop iterates over each element using the enhanced for loop, and the variable 'x' takes on each value in sequence. The loop adds each element to the variable 'sum', which starts at 0. After processing all five elements (1+2+3+4+5), sum equals 15. Then, the code prints the value of 'sum' minus 3, which is 12. Option C is correct.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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