如何在 Java 中显示树层次结构? [英] How to display tree hierarchy in Java?

问题描述

我在名为Process"的数据库中有一个表

I have a table in a database named "Process"

这个进程表有3个字段:

This process table has 3 fields:

• process_id
• 进程名称
• process_parent_id

现在我想以图形格式显示这个父子层次结构.那么你能不能给我建议以下内容:

Now I want to display this parent child hierarchy in Graphical format. So could you please suggest me the following:

第一季度.使用哪种数据结构更好，以便从数据库中获取数据并存储在该数据结构中?

Q1. Which data structure would be better to use so as to get data from the database and store in that data structure?

第 2 季度.如何以图形格式显示该树(流程层次结构)?

Q2. How to display that tree (process hierarchy) in graphical format?

我想要这样的图形格式:

I want the graphical format something like this:

推荐答案

Swing 有一个内置控件，用于以名为 JTree 的树格式显示数据.它还提供了一个名为 DefaultTreeModel 的数据模型，您可以使用它来存储数据.此链接很好地解释了使用JTree 带有数据模型.

Swing has a built-in control for displaying data in a Tree format called JTree. It also provides a data model called DefaultTreeModel which you can use to store the data. This link gives a pretty good explanation of using a JTree with a data model.

:

为了回答您更新的问题，JGraph 它还提供数据模型，其工作方式似乎与 Swing 提供的 Tree 模型类似.

To answer your updated question, a graph like that could quite well be handled by JGraph which would also provide the data model which seems to work similarly to the Tree model swing provides.

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