如何计算检查的 JCheckbox 数量? [英] How to count number of JCheckboxes checked?

问题描述

我的 JFrame 中有 11 个不同的复选框，并且希望能够在每次检查一个检查总数时获得一个数字.我知道如何设置一个 ItemListener 并查看是否选中了一个，但我不确定如何检查所有这些..

I have 11 different checkboxes in my JFrame and want to be able to get a number whenever one is checked for how many total are checked. I know how to set up an ItemListener and see if one is checked, but I am not sure how I could check all of them..

cblist 是一个包含 11 个 JCheckBox 的 ArrayList.我给每个 JCheckBox 一个项目监听器，这是单击复选框时使用的类...

cblist is an ArrayList containing 11 JCheckBoxes. I gave every JCheckBox an item listener and hereis the class used when the checkboxes are clicked...

private class CheckClass implements ItemListener{
      public void itemStateChanged(ItemEvent event){
         for(cblist.isChecked){
             ingnum++;
         }

      }
  }

在 for 循环中，如何测试 ArrayList 的所有元素.我知道我现在的语法不正确.

In the for loop, how do I test all elements of the ArrayList..I understand my syntax is not correct right now.

推荐答案

一种方法:将所有 JCheckBox 放入一个数组或 ArrayList 并在需要时简单地遍历列表以查看选中了哪些复选框.

One way: put all of the JCheckBoxes in an array or ArrayList<JCheckBox> and when desired, simply iterate through the list to see which check boxes are selected.

另一种可能的解决方案:如果您有一个表格结构，请使用在其模型中保存布尔值的 JTable，然后在需要时遍历 TableModel 的行以查看哪些行保存 Boolean.TRUE 值.

Another possible solution: if you have a tabular structure, use a JTable that holds Booleans in its model, then when desired iterate through the rows of the TableModel to see which rows hold Boolean.TRUE values.

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