- A
Declare the method with a type parameter in angle brackets before the return type, then use the type parameter for parameters and return type, then implement the method body using the type parameter, then invoke the method either with explicit type argument or type inference.
This is correct because the type parameter must be declared in the method signature before the return type, then used in the method signature and body, and finally the method is called with appropriate types.
- B
Write the method body first using a specific type, then replace the specific type with a type parameter, then add the type parameter declaration in the method signature, then call the method with the specific type.
Why wrong: This is incorrect because generic type parameters must be declared before they are used; you cannot retroactively add a type parameter to an already written method body.
- C
Declare the method with a type parameter after the return type, then use the type parameter in the method body, then call the method with type inference.
Why wrong: This is incorrect because the type parameter must be placed in angle brackets before the return type, not after. Placing it after the return type is syntax error.
- D
Use a wildcard (?) in the method signature instead of a type parameter, then implement the method body, then call the method with different types.
Why wrong: This is incorrect because wildcards are used for unknown types in method parameters or return types, not for defining a generic method with a named type parameter that can be used in the body.
1Z0-829 Working with Arrays and Collections Practice Question
This 1Z0-829 practice question tests your understanding of working with arrays and collections. 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.
Arrange the steps to create and use a generic method in Java.
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
Declare the method with a type parameter in angle brackets before the return type, then use the type parameter for parameters and return type, then implement the method body using the type parameter, then invoke the method either with explicit type argument or type inference.
Generic methods allow type-safe operations on different types. The type parameter is placed before the return type.
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.
- ✓
Declare the method with a type parameter in angle brackets before the return type, then use the type parameter for parameters and return type, then implement the method body using the type parameter, then invoke the method either with explicit type argument or type inference.
Why this is correct
This is correct because the type parameter must be declared in the method signature before the return type, then used in the method signature and body, and finally the method is called with appropriate types.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Write the method body first using a specific type, then replace the specific type with a type parameter, then add the type parameter declaration in the method signature, then call the method with the specific type.
Why it's wrong here
This is incorrect because generic type parameters must be declared before they are used; you cannot retroactively add a type parameter to an already written method body.
- ✗
Declare the method with a type parameter after the return type, then use the type parameter in the method body, then call the method with type inference.
Why it's wrong here
This is incorrect because the type parameter must be placed in angle brackets before the return type, not after. Placing it after the return type is syntax error.
- ✗
Use a wildcard (?) in the method signature instead of a type parameter, then implement the method body, then call the method with different types.
Why it's wrong here
This is incorrect because wildcards are used for unknown types in method parameters or return types, not for defining a generic method with a named type parameter that can be used in the body.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 1Z0-829 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.
Identify which 1Z0-829 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Working with Arrays and Collections — study guide chapter
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FAQ
Questions learners often ask
What does this 1Z0-829 question test?
Working with Arrays and Collections — This question tests Working with Arrays and Collections — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Declare the method with a type parameter in angle brackets before the return type, then use the type parameter for parameters and return type, then implement the method body using the type parameter, then invoke the method either with explicit type argument or type inference. — Generic methods allow type-safe operations on different types. The type parameter is placed before the return type.
What should I do if I get this 1Z0-829 question wrong?
Identify which 1Z0-829 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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 11, 2026
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