You want to run a Spring Boot app and pass a custom argument 'user=admin' to the main method. How can you access this argument inside your application?

hard📝 Application Q9 of 15

Spring Boot - Fundamentals

AUse System.getProperty('user')

BUse @Value annotation with '${user}' in any bean

CUse args parameter in main method and parse it manually

DUse @Autowired Environment and call getProperty('user')

Step-by-Step Solution

Solution:

Step 1: Understand how command line args are passed
Arguments passed to main are available in the args array and must be parsed manually.
Step 2: Differentiate property injection vs args
@Value and Environment get properties from Spring context, not direct main args unless passed as properties.
Final Answer:
Use args parameter in main method and parse it manually -> Option C
Quick Check:
Access main args directly via args array [OK]

Quick Trick: Parse main method args array to get custom arguments [OK]

Common Mistakes:

Assuming @Value reads main args
Using System.getProperty for args
Confusing environment properties with args

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More Spring Boot Quizzes

You want to run a Spring Boot app and pass a custom argument 'user=admin' to the main method. How can you access this argument inside your application?

Step 1: Understand how command line args are passed

Step 2: Differentiate property injection vs args

Final Answer:

Quick Check:

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