Question

For example, if component is a checkbox it must set to false, or it is a textfield it must be clear the text. I am trying to write a method for reset all components in a JPanel. It must work like reset function in HTML forms.

How to reset a JComponent to the default value?

Answer 1

One possible workaround would be to create a custom reset function. Reinitialize the panel ( your form).

For e.g.

void reset(){
    //recreate the form panel.
    formPanel = new FormPanel(); 
}

Create a custom class FormPanel to store the form fields and their listeners.

Re initializing the panel components would result in an overhead of reassigning the listeners as @Robin suggested.