- A
long x = (long) 9223372036854775807L;
Why wrong: This line compiles and assigns the correct value, but the explicit cast is redundant. However, it is still a valid assignment, though not the most straightforward.
- B
long x = 9223372036854775808L;
Why wrong: The value 9223372036854775808L exceeds Long.MAX_VALUE, causing a compilation error.
- C
long x = 9223372036854775807;
Why wrong: Missing the 'L' suffix causes the literal to be treated as an int, resulting in overflow.
- D
long x = 9223372036854775807L;
This line correctly assigns the maximum long value using the literal with the required 'L' suffix.
- E
long x = Long.MAX_VALUE;
This line uses the well-defined constant Long.MAX_VALUE, which is clear and maintainable.
- F
long x = 9223372036854775807;
Why wrong: Literal without L is int; overflow.
- G
long x = (long) 1e19;
Why wrong: Floating-point literal can't be assigned directly; casting truncates but still not the maximum.
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.
A developer wants to assign the largest possible long value to a variable. Which is correct?
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
long x = 9223372036854775807L;
Both options D and E correctly assign the largest possible long value. Option D uses the literal 9223372036854775807L, which is exactly Long.MAX_VALUE, and the 'L' suffix ensures it is treated as a long. Option E uses the constant Long.MAX_VALUE, which is a more readable and maintainable approach. Options A and C also attempt the same literal but have issues: A uses an unnecessary cast, and C lacks the 'L' suffix, causing an integer overflow error. Option B exceeds the maximum long value and causes a compilation error. The null options are also incorrect.
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.
- ✗
long x = (long) 9223372036854775807L;
Why it's wrong here
This line compiles and assigns the correct value, but the explicit cast is redundant. However, it is still a valid assignment, though not the most straightforward.
- ✗
long x = 9223372036854775808L;
Why it's wrong here
The value 9223372036854775808L exceeds Long.MAX_VALUE, causing a compilation error.
- ✗
long x = 9223372036854775807;
Why it's wrong here
Missing the 'L' suffix causes the literal to be treated as an int, resulting in overflow.
- ✓
long x = 9223372036854775807L;
Why this is correct
This line correctly assigns the maximum long value using the literal with the required 'L' suffix.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
long x = Long.MAX_VALUE;
Why this is correct
This line uses the well-defined constant Long.MAX_VALUE, which is clear and maintainable.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
long x = 9223372036854775807;
Why it's wrong here
Literal without L is int; overflow.
- ✗
long x = (long) 1e19;
Why it's wrong here
Floating-point literal can't be assigned directly; casting truncates but still not the maximum.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often forget the 'L' suffix for long literals or attempt to assign a value that exceeds the long range, leading them to choose options that cause compilation errors, while the correct answer leverages the Long.MAX_VALUE constant to avoid such pitfalls.
Detailed technical explanation
How to think about this question
The long primitive type in Java is a 64-bit signed two's complement integer with a range from -9223372036854775808 to 9223372036854775807. The Long.MAX_VALUE constant is defined as 0x7fffffffffffffffL, which is the maximum representable value. Using hardcoded literals like 9223372036854775807L is error-prone and less readable; the constant is preferred for clarity and maintainability, especially in code that must work across different JVM versions or platforms.
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
Got this wrong? Here's your next step.
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Primitives, Strings and Operators — study guide chapter
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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: long x = 9223372036854775807L; — Both options D and E correctly assign the largest possible long value. Option D uses the literal 9223372036854775807L, which is exactly Long.MAX_VALUE, and the 'L' suffix ensures it is treated as a long. Option E uses the constant Long.MAX_VALUE, which is a more readable and maintainable approach. Options A and C also attempt the same literal but have issues: A uses an unnecessary cast, and C lacks the 'L' suffix, causing an integer overflow error. Option B exceeds the maximum long value and causes a compilation error. The null options are also incorrect.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 25, 2026
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