how to let Excel or notepad input numbers from floating number keypad in java

Question

I made a floating number keypad in java, it can key in figures in java application, but i doesn't work for other windows applications, such as Excel,notepad etc. So Anyone can help tell me how to let my number keypad use in other windows applications also.

Answer 1

I solved the problem by using "Robot" to simulate keyboard press, I post an example below is number button 1's acitonPerformed in my floating number keypad

 private void btn01ActionPerformed(java.awt.event.ActionEvent evt) {                                      
    Boolean f = false;
    // for input numbers into jtextfield in  java applications
    Object source = evt.getSource();
    if (source instanceof JButton) {
        JButton btn = (JButton) source;
        try {


           
            String val = String.valueOf(btn.getText());


            Component comp = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
            if (comp instanceof JTextComponent) {
                JTextComponent tc = (JTextComponent) comp;
                tc.setText(tc.getText() + val);
                f = true;
            }
        } catch (NumberFormatException exp) {
        }
    }
    
    // below for input number 1 into other programs
    if (!f) {
        Robot r;
        try {
            r = new Robot();
            r.keyPress(KeyEvent.VK_1);
            r.keyRelease(KeyEvent.VK_1);
        } catch (AWTException ex) {
            Logger.getLogger(calculator.class.getName()).log(Level.SEVERE, null, ex);
        }


    }




}