Question 1easymultiple choice
Full question →- A
float
float default is 0.0f.
- B
long
Why wrong: long default is 0L.
- C
double
Why wrong: double default is 0.0d.
- D
int
Why wrong: int default is 0.
Question 361 of 509
Quick Answer
The correct answer is float, as the default value of a float in Java is 0.0f. This default arises because float is a 32-bit IEEE 754 floating-point primitive, and the Java language specification mandates that all uninitialized instance and static variables of this type are automatically set to 0.0f, with the lowercase 'f' suffix explicitly marking it as a float literal rather than a double. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding of primitive type defaults and initialization rules, often appearing as a straightforward multiple-choice question where distractors include double (0.0d) or int (0). A common trap is confusing float’s default with double’s 0.0d, so remember that any floating-point default ending in 'f' belongs to float. For a quick memory tip: think “float f = 0.0f” — the letter 'f' appears three times, reinforcing that float’s default is always 0.0f.
1Z0-811 Primitives, Strings and Operators Practice Question
This 1Z0-811 practice question tests your understanding of primitives, strings and operators. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which primitive type has a default value of 0.0f?
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Detailed technical explanation
How to think about this question
Under the hood, Java initializes instance and static variables to default values before any constructor or method runs. For float, the default is 0.0f, which is stored as the 32-bit IEEE 754 binary representation of zero (0x00000000). A subtle behavior is that using 0.0 (without the 'f') would be a double literal and cause a compilation error if assigned to a float variable without an explicit cast, but default initialization bypasses this because the JVM assigns the exact float zero pattern.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Questions learners often ask
What does this 1Z0-811 question test?
Primitives, Strings and Operators — This question tests Primitives, Strings and Operators — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this 1Z0-811 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This 1Z0-811 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-811 exam.
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