JTable.clearSelection()vs Jtable.getSelectionModel.clearSelection()-什么时候使用什么? [英] JTable.clearSelection() vs Jtable.getSelectionModel.clearSelection() - When to use what?

问题描述

我需要取消JTable模型对象内的所有选择. Java提供了此功能"clearSelection()"，据我所知，该功能可以满足我的需要.

I need to cancel all selections within a JTable model object. Java provides this function "clearSelection()" which does, what I need, as far as I understand.

但是我很困惑为什么可以在JTable对象以及JTable对象的选择模型上调用此函数:

But I am confused why this function can be called on a JTable object as well as on a selection model for a JTable object:

 1) mytable.clearSelection();
 2) mytable.getSelectionModel().clearSelection();

两种方法都有效，但是我不了解在什么情况下SelectionModel的clearSelection()(如2)有意义.据我了解SelectionModels，它们用于决定JTable允许的选择类型.我使用SelectionModel只允许选择精确的一行

Both ways work, but I do not understand in what situation a clearSelection() of a SelectionModel (like at 2) ) would make any sense. As far as I understood SelectionModels, they are used to decide what kind of selections a JTable allows. I use the SelectionModel to only allow a Selection of exactly one row

//allow only one row to be selected
mytable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

在哪种情况下首选哪种方式?是否有充分的理由不使用方法1?

Which way is to be preferred in what kind of situation? Is there a good reason not to use way 1?

如果有人对此有一些初学者友好的解释，我将感到高兴.提前谢谢.

I would be glad if anyone has some beginner friendly explanation for that. Thx in advance.

推荐答案

这是JTable#clearSelection()

public void clearSelection() {
    selectionModel.clearSelection();
    columnModel.getSelectionModel().clearSelection();
}

如您所见，有两个ListSelectionModel已清除，因为您可以选择列和/或行和/或单元格.

As you can see, there is two ListSelectionModel which are cleared, because you can select column and/or row and/or cell.

从Oracle教程开始:

From Oracle tutorial :

JTable使用一个非常简单的选择概念，作为一个 行和列的交集.它并非旨在完全处理 独立的单元格选择.

JTable uses a very simple concept of selection, managed as an intersection of rows and columns. It was not designed to handle fully independent cell selections.

A ListSelectionModel处理选择的所有方面，例如选择了哪一行，如何选择某些行等...不仅是选择的种类！
有关更多信息，请参见 Oracle JTable教程

A ListSelectionModel handle all aspect of the selection such as which row is selected, how can we select some rows, etc... Not only the kind of selection !
More information in the Oracle JTable tutorial

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