Tagged: JAVA EE

public class UserServiceFactory { public UserService getInstance(){ return new UserService(new UserDataRepositoryImpl()); } } class UserService{ private UserDataRepository udr; UserService(UserDataRepository udr){ this.udr = udr; } public void persistUser(User user){ udr.save(user); }...

long long fibonacci(int n) { if(n==0) return 0; if(n==1) return 1; return fibonacci(n-2) + fibonacci(n-1); } int main() { int testCase = 10; long long testAnswer = fibonacci(testCase); cout<<testAnswer; }...

JAVA EE로 팩토리 패턴을 구현 public class EventProducer{ @Produces public String getMessage(){ return “메시지입니다”; } } public class EventService{ @Inject private String message; public void startService(){ System.out.println(“서비스 호출::”+message); } }...

public class MySingleton { private static MySingleton instance; private MySingleton(){} public static synchronized MySingleton getInstance(){ // 경합조건 해결을 위해 synchronized 추가 if(instance == null){ instance = new MySingleton(); } return...