public interface GreetingService {
String greet(String name);
}
public class EnglishGreetingService implements GreetingService {
@Override
public String greet(String name) {
return "Hello, " + name + "!";
}
}
public class ChineseGreetingService implements GreetingService {
@Override
public String greet(String name) {
}
}
<component name="EnglishGreetingService" class="com.example.EnglishGreetingService">
<property name="language" value="en"/>
</component>
<component name="ChineseGreetingService" class="com.example.ChineseGreetingService">
<property name="language" value="zh"/>
</component>
import org.osgi.framework.BundleContext;
public class GreetingClient {
private BundleContext bundleContext;
public void setBundleContext(BundleContext bundleContext) {
this.bundleContext = bundleContext;
}
public void greet() {
ServiceReference<GreetingService> serviceReference = bundleContext.getServiceReference(GreetingService.class);
if (serviceReference != null) {
GreetingService greetingService = bundleContext.getService(serviceReference);
String greeting = greetingService.greet("Alice");
System.out.println(greeting);
}
}
}
