java - 用其他列表中的单独元素和元素填充 java 列表的最佳方法是什么？

Question

我需要创建一个链表并用容器中的“容器”和“元素”填充它。

这是我的代码：

public List<WebElement> getExpectedElements(){
    List<WebElement> list = new LinkedList<WebElement>(Arrays.asList(
            inetConnection,
            wiredConnection,
            phonesConnection,
            usbConnection,
            wifiConnection
    ));
    list.addAll(inetConnection.getExpectedElements());
    list.addAll(wiredConnection.getExpectedElements());
    list.addAll(phonesConnection.getExpectedElements());
    list.addAll(usbConnection.getExpectedElements());
    list.addAll(wifiConnection.getExpectedElements());
    return list;
}

java有什么办法让它更好（更简洁，DRY等）？

Answer 1

你至少可以引入一个循环：

List<WebElement> containers = Arrays.asList(inetConnection,
        wiredConnection,
        phonesConnection,
        usbConnection,
        wifiConnection);
List<WebElement> list = new LinkedList<WebElement>(containers);
for (WebElement e : containers)
    list.addAll(e.getExpectedElements());