使用线程安全方法从类中的多个方法填充集合或映射

public synchronized void addToCollection(Object item) {
    // 添加元素到集合中
}

public synchronized void addToMap(Object key, Object value) {
    // 添加键值对到映射中
}

private List<Object> collection = new ArrayList<>();

public void addToCollection(Object item) {
    synchronized (collection) {
        // 添加元素到集合中
    }
}

private Map<Object, Object> map = new HashMap<>();

public void addToMap(Object key, Object value) {
    synchronized (map) {
        // 添加键值对到映射中
    }
}

private List<Object> collection = new CopyOnWriteArrayList<>();

public void addToCollection(Object item) {
    // 添加元素到集合中
}

private Map<Object, Object> map = new ConcurrentHashMap<>();

public void addToMap(Object key, Object value) {
    // 添加键值对到映射中
}