Quick Answer
The correct answer is false || !false, which evaluates to true. This is because the logical OR operator (||) returns true when at least one operand is true, and here the right operand !false evaluates to true, making the entire expression true. On the Oracle Java Foundations 1Z0-811 exam, this question tests your understanding of how boolean expressions evaluate true by combining relational and logical operators. A common trap is forgetting that the NOT operator (!) flips the boolean value, so !false becomes true, and then the OR with false still yields true. To remember this, think of OR as a generous operator: it only needs one true to be satisfied.
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 two expressions evaluate to true? (Choose two)
true && false
Why wrong: False because both operands are not true.
10 > 5
True because 10 is greater than 5.
'a' == 'b'
Why wrong: False, characters are different.
false || !false
True because !false is true, so false || true is true.
3 < 3
Why wrong: False because 3 is not less than 3.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
10 > 5
Option B is correct because the expression `10 > 5` uses the greater-than operator, which evaluates to `true` since 10 is indeed greater than 5. Option D is correct because `!false` evaluates to `true`, and the logical OR operator (`||`) returns `true` if at least one operand is `true`, so `false || true` yields `true`.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
true && false
Why it's wrong here
False because both operands are not true.
10 > 5
Why this is correct
True because 10 is greater than 5.
Related concept
Read the scenario before looking for a memorised answer.
'a' == 'b'
Why it's wrong here
False, characters are different.
false || !false
Why this is correct
True because !false is true, so false || true is true.
Related concept
Read the scenario before looking for a memorised answer.
3 < 3
Why it's wrong here
False because 3 is not less than 3.
Common exam traps
Oracle often tests the distinction between relational operators (`<`, `>`) and equality operators (`==`), where candidates mistakenly think `3 < 3` is true or that `'a' == 'b'` might be true due to character comparison confusion.
Detailed technical explanation
In Java, relational operators like `<` and `>` work on numeric primitives and return a `boolean` result. The equality operator `==` for primitives compares actual values, not references, so `'a' == 'b'` compares the Unicode code points. Logical operators `&&` and `||` short-circuit: `&&` stops evaluating if the left operand is `false`, and `||` stops if the left operand is `true`, which can affect performance and side effects in real-world code.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Primitives, Strings and Operators — This question tests Primitives, Strings and Operators — Read the scenario before looking for a memorised answer..
The correct answer is: 10 > 5 — Option B is correct because the expression `10 > 5` uses the greater-than operator, which evaluates to `true` since 10 is indeed greater than 5. Option D is correct because `!false` evaluates to `true`, and the logical OR operator (`||`) returns `true` if at least one operand is `true`, so `false || true` yields `true`.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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