[Solved] You want to bind a list of strings from application.yml like:app: servers: - host1 - host2 - host3Which of the following is the correct way to declare the property in a @ConfigurationProperties class? | Spring Boot

Spring Boot - Application Configuration

You want to bind a list of strings from application.yml like:

app:
  servers:
    - host1
    - host2
    - host3

Which of the following is the correct way to declare the property in a @ConfigurationProperties class?

Aprivate List<String> servers;

Bprivate String[] server;

Cprivate Map<String, String> servers;

Dprivate String servers;

Step-by-Step Solution

Solution:

Step 1: Identify the YAML structure
The YAML defines a list of strings under app.servers.
Step 2: Choose the matching Java type
A List<String> matches the list structure perfectly and is the recommended type for flexibility.
Step 3: Select the best option
private List servers; uses List, which is idiomatic and works well with Spring Boot binding.
Final Answer:
private List<String> servers; -> Option A
Quick Check:
List binding = A [OK]

Quick Trick: Use List for YAML lists in properties [OK]

Common Mistakes:

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