资源获取即初始化【其他模式】

资源获取即初始化模式

public class ResourceAcquisitionsInitialization {
    /**
     * Resource Acquisition Is Initialization pattern【资源获取即初始化】：
     * 用于实现异常安全的资源管理，资源分配在对象创建时完成，资源释放在对象销毁时完成。
     */
    @Test
    public void all() throws Exception {
        try (SlidingDoor door = new SlidingDoor();) {
            door.welcome();
        }
    }
}

@Slf4j
class SlidingDoor implements AutoCloseable {
    public SlidingDoor() {
        log.info("door is open");
    }

    public void welcome() {
        log.info("Walking in.");
    }

    @Override
    public void close() throws Exception {
        log.info("door is auto close");
    }
}