How to access jtextPane in a different form?

Question

I am developing an application where, when I select a value(file) from list it should be opened in jTextPane of a different form. I am using two panels one is mainpanel wher

Answer 1

Use Action to encapsulate the code that updates the text pane in order to display a given file. You can invoke the action from a ListSelectionListener added to your JList. You can also use the action in a menu item or a toolbar button, as shown here. ImageApp is a related example.

For example, each instance of your action will need the target text pane and file:

class FileAction extends AbstractAction {

    JTextPane target;
    File file;

    public FileAction(JTextPane target, File file) {
        this.target = target;
        this.file = file;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // render file in target
    }
}