java Java中使用的方法“.getChildren()”是什么？
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What is the method ".getChildren()" used for in Java?
提问by Olo Olo
For example if I were to add a line of code such as-
例如，如果我要添加一行代码，例如-
hbox.getChildren().add(calculateButton);
what significance does .getChildren hold and what happens if it not used in a program?
.getChildren 有什么意义？如果不在程序中使用它会怎样？
回答by Deepesh Choudhary
getChildrenmethod is used to get the children components(such as checkboxes, buttons etc) in a container.
getChildren方法用于获取容器中的子组件（例如复选框、按钮等）。
In your case, hBoxis a container which can contain buttons, spinners etc. So getChildrenlists the current components in hBox.
在您的情况下，hBox是一个可以包含按钮、微调器等的容器。所以getChildren列出了 hBox 中的当前组件。
It is basically a list of components currently present in the container. By using add()you are adding a new component in that list.
它基本上是容器中当前存在的组件列表。通过使用，add()您将在该列表中添加一个新组件。
