Top "Jframe" questions

Only allowing numbers and a symbol (-) to be typed into a JTextField

I'm trying to create a math quiz and I only want the user to be able to enter numbers whether …

java swing jframe jtextfield documentfilter

return a variable value to main on button click

I want that main should print hello (in a pop up dialogue box) everytime the button is clicked. So I …

java swing jframe jbutton propertychangelistener

java - swing - windowlistener

If I'm creating a class, and I will load an object of that class in my JFrame (the class is …

java swing jframe windowlistener