Quick Answer
The correct answer is && and ||, as these are the two logical operators in Java. The && operator, known as logical AND, returns true only when both boolean operands are true, while the || operator, logical OR, returns true if at least one operand is true. Both perform short-circuit evaluation, meaning Java stops evaluating the right-hand side once the result is determined by the left operand—for &&, if the left is false, the result is false; for ||, if the left is true, the result is true. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding of boolean logic and operator behavior, often appearing in conditional statements or loop conditions. A common trap is confusing these with bitwise operators & and |, which do not short-circuit. To remember: think of && as a strict gatekeeper requiring both conditions, and || as a generous host satisfied with just one.
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 of the following operators are logical operators in Java? (Choose two.)
||
Correct: || is the logical OR operator.
&
Why wrong: Incorrect: & is the bitwise AND operator.
&&
Correct: && is the logical AND operator.
|
Why wrong: Incorrect: | is the bitwise OR operator.
~
Why wrong: Incorrect: ~ is the bitwise NOT operator.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
||
Option A is correct because || is the logical OR operator in Java, which returns true if at least one of the two boolean operands is true. Option C is correct because && is the logical AND operator, which returns true only if both boolean operands are true. Both operators perform short-circuit evaluation, meaning the right operand is not evaluated if the result is already determined by the left operand.
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.
||
Why this is correct
Correct: || is the logical OR operator.
Related concept
Read the scenario before looking for a memorised answer.
&
Why it's wrong here
Incorrect: & is the bitwise AND operator.
&&
Why this is correct
Correct: && is the logical AND operator.
Related concept
Read the scenario before looking for a memorised answer.
|
Why it's wrong here
Incorrect: | is the bitwise OR operator.
~
Why it's wrong here
Incorrect: ~ is the bitwise NOT operator.
Common exam traps
The trap here is that candidates often confuse bitwise operators (&, |) with logical operators (&&, ||) because they look similar, but Java treats them distinctly based on operand types and evaluation behavior.
Detailed technical explanation
Under the hood, logical operators && and || work with boolean primitives only, and their short-circuit behavior can prevent NullPointerException or other side effects by skipping evaluation of the right operand when the left operand already determines the result. For example, in if (str != null && str.length() > 0), the second condition is never evaluated if str is null. In contrast, bitwise operators & and | always evaluate both operands, which can lead to unexpected side effects or performance costs in boolean expressions.
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: || — Option A is correct because || is the logical OR operator in Java, which returns true if at least one of the two boolean operands is true. Option C is correct because && is the logical AND operator, which returns true only if both boolean operands are true. Both operators perform short-circuit evaluation, meaning the right operand is not evaluated if the result is already determined by the left operand.
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 25, 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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