Question

public void valueChanged(TreeSelectionEvent event) {
    //Add images depending on selection.
    String selection = navigation.getLastSelectedPathComponent().toString();
    if (selection == "Sigma") {
        try {
            Style style = document.addStyle("StyleName", null);
            StyleConstants.setIcon(style, new ImageIcon("sigma.png"));
            document.insertString(document.getLength(), "ignored text", style);
        } catch (BadLocationException e){

        }
    }

}

Hey all, so I’ve debugged everything and everything is working correctly except for the ACTUAL INSERTION of the icon.

Can anyone explain to me why this isn’t working? I have a try and catch statement, yet it still seems to fail on me.

PS: Don’t ask for more code, my code compiles perfectly without this code. document is a global variable, and, I used styling to insert the icon (correct me if I’m wrong).

Answer 1

You have one problem:

selection == "Sigma"

that’s not how you compare strings, change it to:

"Sigma".equals(selection)

Also don’t swallow the exception:

} catch (BadLocationException e) {
    //do something here
    e.printStackTrace();        
}