Converting number to words in java

In this example you are going to see how to convert a number to words using simple GUI java programme. This is a part of Java tutorial series and code was created by one of my student Abhijit.

System info :

Acer emachine 732z with 4GB of RAM
JDK 8
Tested on Geany and Eclipse

Convert a number in words using Java Script

import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JButton; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import javax.swing.JTextField; import javax.swing.JLabel; import javax.swing.JTextArea; public class MainWindow { private JFrame frmWriteInWords; private JTextField txtinp; /** * Converting number to words in java * By Student Abhijit Prasad */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { MainWindow window = new MainWindow(); window.frmWriteInWords.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the application. */ public MainWindow() { initialize(); } /** * Initialize the contents of the frame. */ private static String intToString(long inp) { String rs=new String(""); long tmp1, tmp2; int i; tmp2 = inp; for(i=0; tmp2>0; i++) { tmp1 = i==1 ? tmp2%10 : tmp2%100; if(i>=4) return rs=(tmp2==0?"":intToString(tmp2))+(tmp2==0?"":placeGroup(i))+rs; else rs=(tmp1==0?"":dig2Word(tmp1))+(tmp1==0?"":placeGroup(i))+rs; tmp2 = i==1 ? tmp2/10 : tmp2/100; } return rs; } private static String dig2Word(long inp) { String rs = new String(); inp %= 100; if(inp==0) rs="Zero "; else if(inp>=90) rs="Ninety "; else if(inp>=80) rs="Eighty "; else if(inp>=70) rs="Seventy "; else if(inp>=60) rs="Sixty "; else if(inp>=50) rs="Fifty "; else if(inp>=40) rs="Forty "; else if(inp>=30) rs="Thirty "; else if(inp>=20) rs="Twenty "; else if(inp>=10) { switch((int)inp) { case 10: rs+="Ten "; break; case 11: rs+="Eleven "; break; case 12: rs+="Twelve "; break; case 13: rs+="Thirteen "; break; case 14: rs+="Fourteen "; break; case 15: rs+="Fifteen "; break; case 16: rs+="Sixteen "; break; case 17: rs+="Seventeen "; break; case 18: rs+="Eighteen "; break; case 19: rs+="Nineteen"; break; } return rs; } if(inp%10!=0) { switch((int)inp%10) { case 1: rs+="One "; break; case 2: rs+="Two "; break; case 3: rs+="Three "; break; case 4: rs+="Four "; break; case 5: rs+="Five "; break; case 6: rs+="Six "; break; case 7: rs+="Seven "; break; case 8: rs+="Eight "; break; case 9: rs+="Nine "; break; } } return rs; } private static String placeGroup(long pos) { String rs= new String(); ; switch((int)pos) { case 0: rs=" "; break; case 1: rs="Hundred "; break; case 2: rs="Thousand "; break; case 3: rs="Lac "; break; case 4: rs="Crore "; break; default: rs=""; } return rs; } private void initialize() { frmWriteInWords = new JFrame(); frmWriteInWords.setTitle("Write in Words"); frmWriteInWords.setBounds(100, 100, 349, 225); frmWriteInWords.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frmWriteInWords.getContentPane().setLayout(null) txtinp = new JTextField(); txtinp.setBounds(10, 32, 203, 20); frmWriteInWords.getContentPane().add(txtinp); txtinp.setColumns(10); JTextArea textArea = new JTextArea(); textArea.setEditable(false); textArea.setLineWrap(true); textArea.setWrapStyleWord(true); textArea.setRows(3); textArea.setBounds(10, 75, 302, 79); frmWriteInWords.getContentPane().add(textArea); JButton btncnvrt = new JButton("In Words"); btncnvrt.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { textArea.setText(intToString(Integer.parseInt(txtinp.getText()))); } }); btncnvrt.setBounds(223, 31, 89, 23); frmWriteInWords.getContentPane().add(btncnvrt); JLabel lblNewLabel = new JLabel("A Simple GUI Program by Abhijit"); lblNewLabel.setBounds(109, 165, 203, 14); frmWriteInWords.getContentPane().add(lblNewLabel); } }