Approach 3: Dependency Injection
- Use annotations to indicate that a class can be injected
- Spring will pass you an instance of a class
public class ImportantProcessHandler {
public ImportantProcessHandler(Logger logger) {
this.myLogger = logger;
}
public void handleImportantProcess() {
myLogger.log("Done!");
}
}
@Component
public class StandardOutLogger implements Logger {
public void log(String message) {
System.out.println(message)
}
}
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