Question

I’m writing a vt100 emulator and I’m using a JTextPane with a DefaultStyledDocument to display the formatted text. Now I want to implement the backspace, so i need to be able to remove the last character.

I tried the following:

doc.remove(doc.getEndPosition().getOffset()-1, doc.getEndPosition().getOffset());

But I keep getting a ‘javax.swing.text.BadLocationException: Invalid remove’

How should this be done?

Answer 1

You’re using the API wrong. The last parameter is the number of characters to remove which in your case should be 1.

Here is the API for Document.remove(int, int).