1Z0-811 Primitives, Strings and Operators Practice Question
Given: byte b = 10; b = b + 1; What is the result?
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
✓
Compilation error
In Java, arithmetic operations on byte promote the result to int. Assigning an int to a byte without a cast causes a compilation error.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Runtime exception
Why it's wrong here
Incorrect: the error is caught at compile time.
- ✗
b becomes 10
Why it's wrong here
Incorrect: the compilation error prevents execution.
- ✓
Compilation error
Why this is correct
Correct: b+1 is int, cannot assign to byte without explicit cast.
- ✗
b becomes 11
Why it's wrong here
Incorrect: the code does not compile.
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