# Proxy Pattern

public interface Executor {
  public void run(String command) throws Exception;
}

public class ExecutorImpl implements Excutor {
  @Override
  public void run(String command) throws IOException {
    System.out.println("command");
  }
}

public class ExecutorProxy implements Excutor {

  private Executor exec;

  public ExecutorProxy(String user, String passwd) {
    private boolean isAdmin;
    if ("rrest".equals(user) && "1234".equals(passwd)) {
      isAdmin = true;
    }

    exec = new ExecutorImpl();
  }

  @Override
  public void run(String command) throws Exception {
    if (isAdmin) {
      exec.run(command);
    } else {
      throw new Exception("You are not Administrator !!");
    }
  }
}

public class ProxyPatternTest {
  public static void main(String[] args) {
    Executor exec = new ExecutorProxy("rrest", "1234");
    exec.run("프록시 테스트");
  }
}