1Z0-811 Type casting Practice Question
Given the code snippet: double d = 10.5; int i = (int) d; System.out.println(i); What is the output?
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
✓
10
Casting a double to int truncates the fractional part, so 10.5 becomes 10. Option A (10.0) is incorrect because the result is an int without decimals; Option B is the original value; Option D is incorrect because the code compiles and runs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
10.0
Why it's wrong here
This option states '10', but it is marked as incorrect because the question contains a duplicate of the correct answer; the intended correct choice is C.
- ✗
10.5
Why it's wrong here
This is the original double value, but casting to int removes the fractional part, so the output is an integer.
- ✓
10
Why this is correct
Correct: Casting a double to int truncates the fractional part, so 10.5 becomes 10.
- ✗
Compilation error
Why it's wrong here
Compilation error occurs only if there is a syntax error or incompatible types, but this cast is valid.
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