1Z0-811 Java Basics and Syntax Practice Question
Exhibit
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?
⚠ Common exam trap
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.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
12
The exhibit shows code that initializes an integer array with values 1 through 5. The enhanced for loop iterates over each element, adding each value to the variable 'sum' (starting at 0). After summing all five elements (1+2+3+4+5), sum equals 15. The code then prints the value of sum minus 3, which is 12. Therefore, option C is correct.
Answer analysis
Option-by-option breakdown
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.
- ✗
11
Why it's wrong here
Incorrect. Correct value is 12.
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