This tutorial will teach you how to make a Cash Issue System using Java Step by Step. First Select the textfield right click-> AddEvent Handler-> key-> keyRelased public void keyReleased(KeyEvent e) { double a = Double.parseDouble(txt1000.getText()) * 1000; txttot1000.setText(String.valueOf(a)); } Do each textfield same thing like above. After that Paste the Code inside the ok button.inorder to calculate and get …