Handle barcode scan in Java

Question

I want to have my application react to barcodes being scanned to trigger button presses. For example the user could scan the ((PRINT)) barcode to activate the print button.<

Answer 1

This is my approach. It's working. Just get the miliseconds for ensure doesn't read twice. Just add a Key Listener (implemented in the same JFrame).

  @Override
    public void keyTyped(KeyEvent e) {
    }

    @Override
    public void keyPressed(KeyEvent e) {
    }

    @Override
    public void keyReleased(KeyEvent e) {
        logger().info("keytyped" + e.getKeyChar() + " code "+e.getKeyCode());
        if (e.getKeyCode() == KeyEvent.VK_ENTER) {
            logger().info("all keys " + keyspressed);
            return;
        }
        // will not last more than a second...
        if (keyspressed == null || System.currentTimeMillis() - currentTimeMillis > 1000) {
            keyspressed = e.getKeyChar()+"";
            currentTimeMillis = System.currentTimeMillis();
        } else {
            keyspressed = keyspressed + e.getKeyChar();
            currentTimeMillis = System.currentTimeMillis();
        }
    }

    private String keyspressed = null;
    private long currentTimeMillis = System.currentTimeMillis();