[Solved] Given application.properties contains app.description=Spring Boot App, what will be printed by this code?public class MyApp { @Value("${app.description}") private String description;... | Spring Boot

Spring Boot - Spring Annotations

Given application.properties contains app.description=Spring Boot App, what will be printed by this code?

public class MyApp {
  @Value("${app.description}")
  private String description;

  public void printDesc() {
    System.out.println(description);
  }
}

ASpring Boot App

B${app.description}

Cnull

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand @Value injection
The @Value annotation injects the property value 'Spring Boot App' into the description field.
Step 2: Predict output of printDesc()
Printing description will output the injected string 'Spring Boot App'.
Final Answer:
Spring Boot App -> Option A
Quick Check:
Injected value prints as property value [OK]

Quick Trick: Injected property prints actual value, not the placeholder [OK]

Common Mistakes:

Expecting placeholder string instead of value
Assuming null if not initialized manually
Thinking it causes compile error

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More Spring Boot Quizzes

Given application.properties contains app.description=Spring Boot App, what will be printed by this code?

Step 1: Understand @Value injection

Step 2: Predict output of printDesc()

Final Answer:

Quick Check:

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