如何在 Java 运行时将面板动态添加到其他面板? [英] How do I dynamically add Panels to other panels at runtime in Java?

问题描述

我正在尝试再次进入 Java(已经有几年了).我从来没有真正用 Java 做过任何 GUI 编码.我一直在使用 Netbeans 来开始这个工作.

I'm trying to get into java again (it's been a few years). I never really did any GUI coding in java. I've been using Netbeans to get started with this.

在工作中使用 C# 中的 winforms 时，我使用用户控件来构建我的 UI 部分并将它们动态添加到表单中.

When using winforms in C# at work I use a usercontrols to build parts of my UI and add them to forms dynamically.

我一直在尝试像 C# 中的用户控件一样使用 JPanels.我创建了一个名为 BlurbEditor 的 JPanel 表单.这有一些简单的控件.我试图在按钮事件的运行时将它添加到另一个面板.

I've been trying to use JPanels like usercontrols in C#. I created a JPanel form called BlurbEditor. This has a few simple controls on it. I am trying to add it to another panel at run time on a button event.

这是我认为可行的代码:

Here is the code that I thought would work:

mainPanel.add(new BlurbEditor());
mainPanel.revalidate();
//I've also tried all possible combinations of these too
//mainPanel.repaint();
//mainPanel.validate();

不幸的是，这不起作用.我做错了什么?

This unfortunately is not working. What am I doing wrong?

推荐答案

我想通了.此处接受的答案下的评论对此进行了解释:动态添加的 JTable 不显示

I figured it out. The comments under the accepted answer here explain it: Dynamically added JTable not displaying

基本上我只是在 mainPanel.add() 之前添加了以下内容

Basically I just added the following before the mainPanel.add()

mainPanel.setLayout(new java.awt.BorderLayout());

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