The correct fix is to set the JAVA_HOME environment variable in the buildspec file’s env section, not in a build phase command. This is because each phase in AWS CodeBuild—such as Install, PreBuild, and Build—runs in its own isolated shell session, so any variable exported in one phase is lost by the next. By defining JAVA_HOME in the env block, the variable is available globally across all phases, resolving the “JAVA_HOME is not set” error during compilation. On the DOP-C02 exam, this question tests your understanding of CodeBuild’s phase isolation and environment variable scoping—a common trap is assuming you can set it with export in a command, which fails silently. Remember the mnemonic: “Env block for life, export for the phase.”
DOP-C02 SDLC Automation Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 development team uses AWS CodeBuild to compile a Java application. The build fails during the 'Install' phase with an error: 'Error: JAVA_HOME is not set'. How should the team fix this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the environment variable 'JAVA_HOME' in the buildspec file's 'env' section.
Option B is correct: each build phase uses a separate shell, so environment variables set in one phase do not persist. Option A is wrong because it's not needed. Option C is not the cause. Option D is not necessary.
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.
✓
Set the environment variable 'JAVA_HOME' in the buildspec file's 'env' section.
Why this is correct
Setting JAVA_HOME in the 'env' section ensures it is available in all build phases.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the managed image 'aws/codebuild/standard:5.0' which has Java pre-installed.
Why it's wrong here
The managed image has Java, but JAVA_HOME may still need to be set depending on the build.
✗
Install Java in the pre_build phase using a command.
Why it's wrong here
Installing Java does not set JAVA_HOME automatically; the variable must be set explicitly.
✗
Use a custom Docker image that has Java pre-installed.
Why it's wrong here
While a custom image can help, the error is about JAVA_HOME not being set, not about Java availability.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 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.
SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the environment variable 'JAVA_HOME' in the buildspec file's 'env' section. — Option B is correct: each build phase uses a separate shell, so environment variables set in one phase do not persist. Option A is wrong because it's not needed. Option C is not the cause. Option D is not necessary.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 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.
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This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.
Question Discussion
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