问题
Hi I basically just want to make a JOptionPane window which has a number on top and 2 Buttons "+1" and "-1" if i press one of these Buttons the Number above should Decrease or Increase by 1. It would be very nice if someone could help me with posting a code or explaining how to make it to me. Thanks
回答1:
I would just create a simple JDialog with 3 components, a JLabel and two JButtons. Add ActionListeners to each of the buttons to either add 1 or subtract one.
Start by reading the Swing tutorial. Maybe the section on How to Use Buttons and How to Use Layout Managers.
If you have problems then post your SSCCE that shows what you have done.
来源：https://stackoverflow.com/questions/19687480/make-a-simple-java-optionpane-counter