1Z0-811 Primitives, Strings and Operators Practice Question
Which three of the following are valid Java operators that can be used with primitive numeric types?
⚠ Common exam trap
Oracle often tests the distinction between short-circuit logical operators (&&, ||) and bitwise operators (&, |, ^), trapping candidates who assume that && and || can be used with numeric types because they look similar to & and |.
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
✓
&
Options A, B, and C are correct because &, ^, and | are bitwise operators that can be applied to integral primitive numeric types (byte, short, int, long, char). They operate on the binary representations of these types. Note that these operators are not applicable to floating-point types (float, double). Options D and E (&&, ||) are logical operators that work only with boolean operands, not numeric types.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
&
Why this is correct
& is a bitwise AND operator that works on integer types (byte, short, int, long, char).
- ✓
^
Why this is correct
The caret symbol `^` represents the bitwise XOR operator in Java. This operator is valid for use with primitive integer numeric types, specifically `byte`, `short`, `int`, and `long`. It performs an exclusive OR operation on the corresponding bits of its operands. Its applicability to these fundamental numeric types satisfies the question's requirement for a valid operator that can be utilised with primitive numeric types.
- ✓
|
Why this is correct
| is a bitwise OR operator that works on integer types.
- ✗
||
Why it's wrong here
|| is a logical OR operator for boolean expressions; it cannot be applied directly to numeric primitives.
- ✗
&&
Why it's wrong here
&& is a logical AND operator for boolean expressions; it cannot be applied directly to numeric primitives.
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