1Z0-811 Primitives, Strings and Operators Practice Question
Which primitive type has a default value of 0.0f?
⚠ Common exam trap
Oracle often tests the distinction between float and double default values, where candidates mistakenly choose double (0.0d) because they overlook the 'f' suffix requirement for float literals.
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
✓
float
In Java, the default value for a float primitive is 0.0f. This is because float is a 32-bit IEEE 754 floating-point type, and its default initialization is 0.0f (with the 'f' suffix to denote a float literal). Option A is correct because it directly matches this specification.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
float
Why this is correct
float default is 0.0f.
- ✗
long
Why it's wrong here
long default is 0L.
- ✗
double
Why it's wrong here
double default is 0.0d.
- ✗
int
Why it's wrong here
int default is 0.
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