[Solved] A developer wrote this class:@ConfigurationProperties(prefix = "db") public class DatabaseConfig { private String url;... // no getters or setters }Why will the properties not bind correctly? | Spring Boot

Spring Boot - Application Configuration

A developer wrote this class:

@ConfigurationProperties(prefix = "db")
public class DatabaseConfig {
  private String url;
  private String username;
  private String password;

  // no getters or setters
}

Why will the properties not bind correctly?

AMissing getters and setters prevent binding

BPrefix "db" is invalid

CClass must be abstract

DFields must be public

Step-by-Step Solution

Solution:

Step 1: Understand binding requirements
@ConfigurationProperties requires standard JavaBean getters and setters for binding to work.
Step 2: Evaluate other options
Prefix "db" is valid, class should not be abstract, and fields do not need to be public if getters/setters exist.
Final Answer:
Missing getters and setters prevent binding -> Option A
Quick Check:
Getters/setters needed for binding [OK]

Quick Trick: Always add getters and setters for binding [OK]

Common Mistakes:

Assuming public fields bind automatically
Thinking prefix must be special
Making class abstract unnecessarily

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A developer wrote this class:

Step 1: Understand binding requirements

Step 2: Evaluate other options

Final Answer:

Quick Check:

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