[Solved] In a microservice using Java, what will be t... In a microservice using Java, what will be the output of this code if the environment variable PORT is set to 8080?String port = System.getenv("PORT"); | Microservices

Microservices - Configuration and Secrets Management

In a microservice using Java, what will be the output of this code if the environment variable PORT is set to 8080?

String port = System.getenv("PORT");
System.out.println("Service running on port: " + port);

AService running on port: null

BService running on port: PORT

CService running on port: 8080

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand System.getenv behavior
System.getenv returns the string value of the environment variable if set.
Step 2: Apply to given code
Since PORT=8080, the output concatenates and prints 'Service running on port: 8080'.
Final Answer:
Service running on port: 8080 -> Option C
Quick Check:
Java getenv returns env var value = B [OK]

Quick Trick: Java getenv returns string or null if unset [OK]

Common Mistakes:

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In a microservice using Java, what will be the output of this code if the environment variable PORT is set to 8080?