How should you correctly inject the integer property server.port from application.properties into a Spring bean field using @Value?

easy📝 Syntax Q3 of 15

Spring Boot - Spring Annotations

How should you correctly inject the integer property server.port from application.properties into a Spring bean field using @Value?

A@Value("${server.port}") private int port;

B@Value(server.port) private int port;

C@Value("server.port") private int port;

D@Value(${server.port}) private int port;

Step-by-Step Solution

Solution:

Step 1: Use correct syntax for @Value
The property placeholder must be enclosed in quotes and use the ${} syntax: @Value("${property.name}").
Step 2: Check for common mistakes
Options B, C, and D miss quotes or the ${} syntax, causing errors.
Final Answer:
@Value("${server.port}") private int port; -> Option A
Quick Check:
Use quotes and ${} for property injection [OK]

Quick Trick: Always use @Value("${property}") syntax [OK]

Common Mistakes:

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