Disabling 'paste' in a jTextfield

问题

I have an app that is written in Swing, awt. I want to prevent users from pasting values into the textfields. is there any way to do this without using action listeners?

回答1:

You can just call setTransferHandler with a null parameter like this:

textComponent.setTransferHandler(null);

This will disable all copy/paste actions on the field.

回答2:

The best way is to remove action associated with CTRL+V keystroke in components ActionMap.

回答3:

The simplest way it to say: textComponent.setEditable(false);

This disables cut & paste, but copy is still enabled.

回答4:

public class PastlessJTextField extends JTextField {

        public PastlessJTextField() {
            super();
        }
        public PastlessJTextField( int columns ){
            super( columns );
        }

        @Override
        public void paste() {
            // do nothing
        }


    }

回答5:

You may be able to override the paste() method in JTextComponent.

来源：https://stackoverflow.com/questions/316673/disabling-paste-in-a-jtextfield