自定义类和 JLists [英] Custom Classes and JLists

问题描述

我在 NetBeans 中从事 Java 项目.

I'm working in NetBeans on a Java Project.

我需要在 JList 中的 ArrayList 中显示每个 State(例如Oklahoma").

I need to display every State (e.g. "Oklahoma") in an ArrayList<State> in a JList.

我不知道如何做到这一点……尤其是在 NetBeans 中.

I can't figure out how to do this... especially not in NetBeans.

我认为这涉及创建一个 DefaultListModel，其中每个 State 作为 String.我已经试过一百万种不同的方法都无济于事.

I think it involves creating a DefaultListModel with each State as a String. I've tried this a million different ways to no avail.

是否可以只加载 ArrayList(也许如果 State 类有一个 toString() 方法)?这将特别有用，因为我可以通过 actionPerformed() 直接修改 ArrayList.

Is it possible to just load the ArrayList<State> (perhaps if the State class has a toString() method)? This would be especially helpful, because I could directly modify the ArrayList<State> via actionPerformed().

为了这个问题，让我们假设 State 是一个 name 类型为 String 和一个 population 的对象 类型为 int.

For the sake of the question, let's assume a State is an object with a name of type String and a population of type int.

我希望这是有道理的.

谢谢.

推荐答案

不幸的是，使用 List 的 JList 唯一简单"的初始化是通过 Vector

Unfortunately, the only 'easy' initialization of JList with a List is via Vector

Vector<State> myStates = new Vector();
//add states
JList list = new JList(myStates);

这篇关于自定义类和 JLists的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！