Archives from S:\ Drive

Good to keep around methinks

SDrive/programs/Mod1/Project3/TempCon.java

@@ -0,0 +1,80 @@
+/******************************************************************************
+ *     Project: Project 3d                                                    *
+ *  Class Name: TempCon                                                       *
+ *      Author: Amrit Panesar -ASP ,o/                                        *
+ * Last Edited: 08/23/2012                                                    *
+ *       Hours: 1.50 Hours                                                    *
+ *     Purpose: To demonstrate the ability to create a conventionally named   *
+ *              java application, the parsing of numeric strings with         *
+ *              exception handling, format numeric output using Decimal       *
+ *              Format, write to and read from a simple text file, use Decimal*
+ *              Format to format output                                       *
+ *                                                                            *
+ ******************************************************************************/
+ 
+import javax.swing.*;
+import java.io.*;
+import java.util.*;
+
+public class TempCon
+{
+	public static void main(String[] args) // main
+	{
+		String sCity = JOptionPane.showInputDialog("Please enter a city."); //4a
+                sCity = sCity.toUpperCase();//4b
+                
+                String sDate = JOptionPane.showInputDialog("Please enter a date, mm/dd/yyyy."); //4c
+                
+                String sTemp = JOptionPane.showInputDialog("Please enter a temperature in Fahrenheit."); //4d
+                double dTemp = 0;
+                try
+                {
+                    dTemp = Double.parseDouble(sTemp); 
+                }
+                catch (NumberFormatException ex)
+                {
+                    JOptionPane.showMessageDialog(null, "We're sorry, \""+dTemp+"\" was an invalid input"
+                            +"Please re-run the application.", "Fatal Error", JOptionPane.ERROR_MESSAGE);
+                    System.exit(0);
+                }
+                double dTempc = (dTemp - 32) * (5.0/9.0);
+                String sTempc = String.format("%.2f", dTempc);
+
+                PrintWriter outFile = null;
+                Scanner inFile = null;
+                try
+                {
+                    outFile = new PrintWriter("tempfile.dat");
+                    inFile  = new Scanner(new FileReader("tempfile.dat"));
+                    String sOut = "Temperature for: "+sCity+"\non: "+sDate+"\n"
+                        +dTemp+"\u00B0 Fahrenheit\n"+sTempc+"\u00B0 Celsius.";
+                    String sIn = "";
+                    
+                    outFile.append(sOut);
+                    outFile.flush();
+                    sIn = inFile.nextLine() + "\n" + inFile.nextLine() + "\n" +
+                          inFile.nextLine() + "\n" + inFile.nextLine();
+                    
+                    JOptionPane.showMessageDialog(null,sIn, "Temperature for: "+sCity,
+                        JOptionPane.INFORMATION_MESSAGE);
+                }
+                catch (FileNotFoundException ex)
+                {
+                    JOptionPane.showMessageDialog(null, "We're sorry, please make a file named "
+                    +"Tempfile.dat", "Fatal Error", JOptionPane.ERROR_MESSAGE);
+                    System.exit(0);
+                }
+                catch (IOException ex)
+                {
+                    JOptionPane.showMessageDialog(null, "We're sorry, caught an I/o exception "
+                    ,"Fatal Error", JOptionPane.ERROR_MESSAGE);
+                    System.exit(0);
+                }
+                finally
+                {
+                    outFile.close();
+                    inFile.close();
+                }
+                System.exit(0);
+	}
+}