import java.io.*; import java.util.*; import javax.swing.JOptionPane; public class lbstokg { public static void main(String[]args) { //Variables that are entered String poundstr; double pound; poundstr = JOptionPane.showInputDialog("Please enter weight in pounds (lbs):"); pound = Double.parseDouble(poundstr); //Conversion 1lb = 2.2 kilograms double kilo = (pound/2.2); //How the answer is displayed on the window String answer = ("" + (int)pound + " lbs is " + String.format("%.1f",kilo) + " Kilograms"); //Window properties JOptionPane.showMessageDialog(null,answer,"Conversion", JOptionPane.INFORMATION_MESSAGE); //IF click yes - then re-open original JOptionpane if cancel - exit out program int cancel = (JOptionPane.CANCEL_OPTION); int value = (JOptionPane.OK_OPTION); if (value == JOptionPane.OK_OPTION) { JOptionPane.showInputDialog("Please enter weight in pounds (lbs):"); } if (cancel == JOptionPane.CANCEL_OPTION) { System.exit(0); } } }