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 …

This tutorial will teach you how to make a Retirement date Calculating System Step by Step. Paste the Code inside the Ok button SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); String issuedate = df.format(jdate.getDate()); Calendar c = Calendar.getInstance(); txtjdate.setText(df.format(c.getTime())); c.add(Calendar.YEAR, 40); txtrdate.setText(df.format(c.getTime())); I have attached the video tutorial below it will help you  to do this  step by step.