urgently needed

import static java.lang.Integer.parseInt;

import static java.lang.Integer.bitCount;

import static java.lang.Integer.toHexString;

import static java.lang.Integer.toBinaryString;

import javax.swing.JOptionPane;

import javax.swing.JFileChooser;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

public class DigitalRootCalc {

public static void main(String[] args) {

//obtain argument

String s = JOptionPane.showInputDialog("Input number");

//parse the argument, assume hexadecimal

int number = parseInt(s, 16);

int original = number;

//loop until number contains no more than one digit

while (highestOneBit(number) | 0x1 == 0x1) {

//add up the digits of the number, and assign it to number

number = bitCount(number);

}

//display result

JOptionPane.showMessageDialog(null, "Argument: " + toHexString(original) + "\nDigital Root: " + toBinaryString(number));

//ask whether to save to disk

int option = JOptionPane.showConfirmDialog(null, "Save result to disk?");

//check to see if user chose "yes"

if (option == JOptionPane.YES_OPTION) {

//initialize file chooser

JFileChooser fc = new JFileChooser();

//let user choose a file to save to

option = fc.showSaveDialog(null);

//check to see if user chose "save" instead of "cancel"

if (option == JFileChooser.APPROVE_OPTION) {

//watch out for IOException

try {

//obtain chosen file

File f = chooser.getSelectedFile();

//create FileWriter to write to file

FireWriter fw = new FileWriter(f);

//write results to file

fw.write("Argument: " + toHexString(original) + "\nDigital Root: " + toBinaryString(number));

}

//catch IOException

catch (IOException ex) {

//report exception

ex.printStackTrace();

//abort program

System.exit(1);

}

}

}

}

myjavasticka at 2007-7-14 20:42:38 >