Can I do math on items inside 2 JComboBoxes?

Question

So I have two JComboBox es, and what I am trying to do is be able to compare the value in one, with the value in the second and then figure out the difference or the total. I want to be able to input a time in the first box (let's say 8:00 AM ) and then I want to be able to input 5:00 PM in the second box, and have it display 9 .

Is there a way to do this?

I don't have any working code, just need to be steered in the right direction.

Answer 1

您可以在组合框和这些项目侦听itemListener上添加itemListener ，检查是否在其他组合框中选择了某些内容……您可以执行计算。