Help with File I/O Program

hey guys. Just finished writing this program for fun and to test myself, because I just learned the File I/O chapter of a book that I bought in an attempt to teach myself java :). This program SHOULD take a users input and change it into binary form and then show them. Here is my code. It is to the best of MY ability. It compiles perfectly and works except for the fact that it doesnt show up in binary form. you will see once u compile it. there are two files, the main class and the methods class.
Main Class:
public class TextToBinaryChanger extends Methods
public static void main(String args[])
Methods.Greeting();
Methods.WriteUserInputToFile();
Methods.readFromUserInputFile();
Methods.askIfExitProgram();
here is the Methods Class:
import javax.swing.*;
import java.io.*;
public class Methods
public static void Greeting()
JOptionPane.showMessageDialog(null,"Welcome to \"Binary Changer 1.0\"!");
public static void WriteUserInputToFile()
try
DataOutputStream WriteUserInput = new DataOutputStream(new FileOutputStream("UserInput.dat"));
PrintWriter WriteUserInputSave = new PrintWriter(new FileOutputStream("UserInputSave.txt"));
String askUserForInput = JOptionPane.showInputDialog("Please enter in the text that you would like to have changed to binary form");
JOptionPane.showMessageDialog(null, "The text you entered in was: " + askUserForInput);
WriteUserInput.writeUTF(askUserForInput);
WriteUserInput.close();
catch (NullPointerException e)
JOptionPane.showMessageDialog(null, "Null has been entered, ending program");
System.exit(0);
catch (FileNotFoundException e)
JOptionPane.showMessageDialog(null, "This file was not found, ending program");
System.exit(0);
catch (IOException e)
JOptionPane.showMessageDialog(null, "Error, program ending now");
System.exit(0);
public static void readFromUserInputFile()
try
DataInputStream showToUser = new DataInputStream(new FileInputStream("UserInput.dat"));
BufferedReader showToUserSave = new BufferedReader(new FileReader("UserInputSave.txt"));
JOptionPane.showMessageDialog(null, "You had first entered in:" + showToUserSave.readLine());
JOptionPane.showMessageDialog(null, "Your text in Binary Form:" + showToUser.readUTF());
showToUserSave.close();
showToUser.close();
catch (NullPointerException e)
JOptionPane.showMessageDialog(null, "Null has been entered, ending program");
System.exit(0);
catch (FileNotFoundException e)
JOptionPane.showMessageDialog(null, "This file was not found, ending program");
System.exit(0);
catch (IOException e)
JOptionPane.showMessageDialog(null, "Error, program ending now");
System.exit(0);
public static void askIfExitProgram()
String askUserIfExit = JOptionPane.showInputDialog("To run this program again, please enter in 'yes'. To exit enter in 'no'");
try
if (askUserIfExit.equalsIgnoreCase("yes"))
WriteUserInputToFile();
else
JOptionPane.showMessageDialog(null, "Thank you for using Binary Changer 1.0!");
System.exit(0);
catch (NullPointerException e)
JOptionPane.showMessageDialog(null, "Null has been entered, ending program");
System.exit(0);
Any help is very much appreciated. laterz,
Lance

// public because it doesn't matter
// static because it doesn't depend on any instance variables (just trust me)
// It will return a String representating the binary form of the data
// takes a String parameter
public static String toBinary(String data)
    // initialise a blank string to append to
    String toReturn = "";
    // we want to loop through each char of the string data
    for(int i=0;i<data.length();i++)
        // this line is complex
        // start from the right, and work left.
        // 1 - data.charAt(i)
        // this returns the char at index i in the string data
        // 2 - (int)data.charAt(i)
        // cast the char as an int so we can convert using existing methods
        // 3 - Integer.toBinaryString((int)data.charAt(i))
        // convert that int into a binary string
        String binary = Integer.toBinaryString((int)data.charAt(i));
        // say we converted the int 5, the string we got back would be "1001"
        // but I know that a char is 16bit, so I want to pad the start of it with zeroes
        // so while the string is shorted than 16, add a 0 to the start
        while(binary.length()<16)
            binary = "0" + binary;
        // add this onto our string that we will return
        // as well as a space so that it looks slightly formatted
        toReturn += binary + " ";
    return toReturn;
}Understand?
Cheers,
Radish21

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    // creates a text file
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    import org.egan.TransactionRecord;
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          System.exit(1);
        } // end catch
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          System.err.println("Error creating file.");
          System.exit(1);
      } // end method openTransFile
      // enable user to open file
      public void openOldMastFile()
        try
          output2 = new Formatter("oldmast.txt");
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          System.err.println("You do not have write access to this file.");
          System.exit(1);
        } // end catch
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          System.err.println("Error creating file.");
          System.exit(1);
      } // end method openOldMastFile
      // add transaction records to file
      public void addTransactionRecords()
        // object to be written to file
        TransactionRecord record1 = new TransactionRecord();
        Scanner input1 = new Scanner(System.in);
        System.out.printf("%s\n%s\n%s\n%s\n\n",
          "To terminate input, type the end-of-file indicator",   
          "when you are prompted to enter input.",
          "On UNIX/Linux/Mac OS X type <ctrl> d then press Enter",
          "On Windows type <ctrl> z then press Enter");
        System.out.printf("%s\n%s",
           "Enter account number (> 0) and amount.","? ");
        while (input1.hasNext())  // loop until end-of-file indicator
          try // output values to file
            // retrieve data to be output
            record1.setAccount(input1.nextInt());    // read account number
            record1.setAmount(input1.nextDouble());  // read amount
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            } // end if
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              System.out.println("Account number must be greater than 0.");
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          } // end try
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            return;
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            record2.setLastName(input2.next());       // read last name
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      public TransactionRecord(int acct, double amt)
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        setAmount(amt);
      } // end two-argument TransactionRecord constructor
      // set account number
      public void setAccount(int acct)
        account = acct;
      } // end method setAccount
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      public int getAccount()
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      public void setAmount(double amt)
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      } // end method setAmount
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    import org.egan.TransactionRecord;
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      private String firstName;
      private String lastName;
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        setLastName(last);
        setBalance(bal);
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      } // end method setAccount
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        return account;
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      public void setFirstName(String first)
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      } // end method getFirstName
      // set last name
      public void setLastName(String last)
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      public String getLastName()
        return lastName;
      } // end method getLastName
      // set balance
      public void setBalance(double bal)
        balance = bal;
      } // end method setBalance
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      public double getBalance()
        return balance;
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      public void combine(TransactionRecord record)
        balance = (getBalance() + record.getAmount()); 
      } // end method combine
    } // end class AccountRecord -------------------------------------------------------------------------------------------------
    // Exercise 14.8: FileMatch.java
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.lang.IllegalStateException;
    import java.util.NoSuchElementException;
    import java.util.Scanner;
    import java.util.Formatter;
    import java.util.FormatterClosedException;
    import org.egan.AccountRecord;
    import org.egan.TransactionRecord;
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      private Scanner inTransaction;
      private Scanner inOldMaster;
      private Formatter outNewMaster;
      private Formatter theLog;
      // enable user to open file
      public void openTransFile()
        try
          inTransaction = new Scanner(new File("trans.txt"));
        } // end try
        catch (FileNotFoundException fileNotFoundException)
          System.err.println("Error opening file.");
          System.exit(1);
        } // end catch
      } // end method openTransFile
      // enable user to open file
      public void openOldMastFile()
        try
          inOldMaster = new Scanner(new File("oldmast.txt"));
        } // end try
        catch (FileNotFoundException fileNotFoundException)
          System.err.println("Error opening file.");
          System.exit(1);
        } // end catch
      } // end method openOldMastFile
      // enable user to open file
      public void openNewMastFile()
        try
          outNewMaster = new Formatter("newmast.txt");
        catch (SecurityException securityException)
          System.err.println("You do not have write access to this file.");
          System.exit(1);
        } // end catch
        catch (FileNotFoundException filesNotFoundException)
          System.err.println("Error creating file.");
          System.exit(1);
      } // end method openNewMastFile
      // enable user to open file
      public void openLogFile()
        try
          theLog = new Formatter("log.txt");
        catch (SecurityException securityException)
          System.err.println("You do not have write access to this file.");
          System.exit(1);
        } // end catch
        catch (FileNotFoundException filesNotFoundException)
          System.err.println("Error creating file.");
          System.exit(1);
      } // end method openLogFile
      // update records
      public void updateRecords()
        TransactionRecord transaction = new TransactionRecord();
        AccountRecord account = new AccountRecord();
        try // read records from file using Scanner object
          System.out.println("Start file matching.");
          while (inTransaction.hasNext() && inOldMaster.hasNext())
            transaction.setAccount(inTransaction.nextInt());     // read account number
            transaction.setAmount(inTransaction.nextDouble());   // read amount
            account.setAccount(inOldMaster.nextInt());     // read account number
            account.setFirstName(inOldMaster.next());      // read first name 
            account.setLastName(inOldMaster.next());       // read last name
            account.setBalance(inOldMaster.nextDouble());  // read balance
            if (transaction.getAccount() == account.getAccount())
              while (inTransaction.hasNext() && transaction.getAccount() == account.getAccount())
                account.combine(transaction);
                outNewMaster.format("%d %s %s %.2f\n",
                account.getAccount(), account.getFirstName(), account.getLastName(),
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                transaction.setAccount(inTransaction.nextInt());     // read account number
                transaction.setAmount(inTransaction.nextDouble());   // read amount
            else if (transaction.getAccount() != account.getAccount())
              outNewMaster.format("%d %s %s %.2f\n",
              account.getAccount(), account.getFirstName(), account.getLastName(),
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              theLog.format("%s%d","Unmatched transaction record for account number ",transaction.getAccount());
          } // end while
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        } // end try
        catch (NoSuchElementException elementException)
          System.err.println("File improperly formed.");
          inTransaction.close();
          inOldMaster.close();
          System.exit(1);
        } // end catch
        catch (IllegalStateException stateException)
          System.err.println("Error reading from file.");
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        } // end catch   
      } // end method updateRecords
      // close file and terminate application
      public void closeTransFile()
        if (inTransaction != null)
          inTransaction.close();
      } // end method closeTransFile
      // close file and terminate application
      public void closeOldMastFile()
        if (inOldMaster != null)
          inOldMaster.close();
      } // end method closeOldMastFile
      // close file
      public void closeNewMastFile()
        if (outNewMaster != null)
          outNewMaster.close();
      } // end method closeNewMastFile
      // close file
      public void closeLogFile()
        if (theLog != null)
          theLog.close();
      } // end method closeLogFile
    } // end class FileMatch-------------------------------------------------------------------------------------------------
    // Exercise 14.8: FileMatchTest.java
    // Testing class FileMatch
    public class FileMatchTest
       // main method begins program execution
       public static void main( String args[] )
         FileMatch application = new FileMatch();
         application.openTransFile();
         application.openOldMastFile();
         application.openNewMastFile();
         application.openLogFile();
         application.updateRecords();
         application.closeLogFile();
         application.closeNewMastFile();
         application.closeOldMastFile();
         application.closeTransFile();
       } // end main
    } // end class FileMatchTest-------------------------------------------------------------------------------------------------
    Sample data for master file:
    Master file                         
    Account Number            Name                     Balance
    100                            Alan Jones                   348.17
    300                            Mary Smith                    27.19
    500                            Sam Sharp                   0.00
    700                            Suzy Green                   -14.22Sample data for transaction file:
    Transaction file                    Transaction
    Account Number                  Amount
    100                                         27.14
    300                                         62.11
    300                                         83.89
    400                                         100.56
    700                                         80.78
    700                                         1.53
    900                                         82.17  -------------------------------------------------------------------------------------------------
    My FileMatch class program above has bugs in it.
    The correct results for the newmast.txt:
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    300  Mary  Smith  173.19
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    Unmatched transaction record for account number 400Unmatched transaction record for account number 900------------------------------------------------------------------------------------------------
    My results for the newmast.txt:
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    300 Mary Smith 111.08
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    700 Suzy Green -12.69My results for the log.txt
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    I am not sure what is wrong with my code above to make my results different from the correct results.
    Much help is appreciated. Please help.

    From the output, it looks like one problem is just formatting -- apparently you're including a newline in log entries and not using tabs for the newmast output file.
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    Also I'd recommend reconsidering your design. It's a red flag if a class has a name with "Create" in it. Classes represent bundles of independant state and transformations on that state, not things to do.

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                    StringTokenizer st = new StringTokenizer(trash);Another way to read in a while loop:
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    Attachments:
    screenshot.jpg ‏258 KB

    This is the first time I have seen a case where it is useful to have two or more event structures in one program.  Since they are in separate parallel loops, I would think there would not be a problem.  I like the idea that the program can be stopped in the middle of an event, for safety reasons.  Great structure, Kasey.  The only thing I would add is to make sure that your exit vi gracefully shuts down the program.  Like if files or references are open, they get closed before terminating the vi.  Just be on the look out for race conditions since you have 3 events that can happen at one time.  One event might affect some indicator that is being handled by another event.  Also, instead of wiring a false to the other loops, maybe you could use local variables of one general stop boolean.  Since your exit vi stops all execution, it may not make much of a difference.
    - tbob
    Inventor of the WORM Global

  • Help with a Word Counting Program..

    I need some help with a program I am trying to write
    The program is being written in BlueJ.
    Im just starting the program and am completely confused on how I should write this...
    But here is what I have to do..
    I have to use a scanner to scan a Text file and count the # of Words the number of Vowels (including Y when it is) and the # of Palindromes (Word spelled same forward and Back) as well as which Palindromes are being used.
    It would be good to have a class to clean the text and a seperate class for the tasks...
    I do not want to use anything other than "If" statements and while loops (no "for" loops) and only use Printwriter as the output file writer.
    Thnx to anyone in advance

    I have a basic Vowel coding that doeswnt work...
    public class vowel{
    String word = "heyyou";
    String vowels = "aeiouy";
    int[] countv = new int[vowels.length()];
    int countv2;
    int i=0;
    if(i<word.length();) { i++ {
    if (int j=0 && j<vowels.length()) {
    return j++;
    if (word.charAt(i)==vowels.charAt(j)) {
    countV[j]++; countV2++;
    for (int i=0; i<vowels.length(); i++) {
    System.out.println("Vowel "vowels.charAt(i)" = "+vcnt);
    System.out.println("Consonants = "+(word.length()-vtot)); }
    I also have a basic Palindrome code that works as a boolean but I need to make it return what the palindromes are and how many of them are there. I wanna know how I would do this.
    public class Palindrome{
    public static boolean isPalindrome(String word) {
    int left = 0;
    int right = word.length() -1;
    while (left < right) {       
    if (word.charAt(left) != word.charAt(right)) {
    return false;
    left++;
    right--;
    return true;
    I would also like to know how to actually start writing the word counter.

  • Help with Rock, Paper, Scissors Program

    I need some help with my program, I got understand writing each of the methods I have to do but then i don't understand how to piece it together to make the program work. in the main method...I didn't complete the scrolling message method I just wanted to get the game itself working first then I was going to complete that method. I just need to know if I'm heading in the right direction or if i did something completly wrong
    import javax.swing.*;
    public class RockPaperScissors
         public static void displayScrollingMessage (String list)
              String header = "Game #\tUser\tComputer\tWinner\t";
         public static void getUserChoice ( )
              int game = 1;
              for ( game = 1; game > 0 ; game ++)
                   String input = JOptionPane.showInputDialog ("Choose Rock, Paper, or Scissors\n Enter\n 1 for Rock" +
                                                                                              "\n2 for Paper\n3 for Scissors\n4 to Exit");
                   String list = "   ";
                   int option = Interger.parseInt (input);
                   switch (option)
                        case 1:
                                  int userChoice = 1;
                                  getComputersChoice ();
                                  itemName (userChoice);
                                  itemName2 (computersChoice);
                                  whowins (userChoice, computersChoice);
                                  winnerName (winner);
                                  winlose (winner);
                                  String list =+ game + "/t" + itemName + "\t" + itemName2 + "\t" + winnerName + "\n";
                                  String winner = JOptionPane.showOutputDialog (null, "You picked " + itemName + " and the computer picked "
                                                                                                                  + itemName2 + "\nTherefore " + winlose);
                                  return userChoice;
                                  break;
                        case 2:
                                  userChoice = 2;
                                  getComputersChoice ();
                                  itemName (userChoice);
                                  itemName2 (computersChoice);
                                  whowins (userChoice, computersChoice);
                                  winnerName (winner);
                                  winlose (winner);
                                  String list =+ game + "\t" + itemName + "\t" + itemName2 + "\t" + winnerName + "\n";
                                  String winner = JOptionPane.showOutputDialog (null, "You picked " + itemName + " and the computer picked "
                                                                                                                  + itemName2 + "\nTherefore " + winlose);
                                  return userChoice;
                                  break;
                        case 3:
                                  userChoice = 3;
                                  getComputersChoice ();
                                  itemName (userChoice);
                                  itemName2 (computersChoice);
                                  whowins (userChoice, computersChoice);
                                  winnerName (winner);
                                  winlose (winner);
                                  String list =+ game + "\t" + itemName + "\t" + itemName2 + "\t" + winnerName + "\n";
                                  String winner = JOptionPane.showOutputDialog (null, "You picked " + itemName + " and the computer picked "
                                                                                                                  + itemName2 + "\nTherefore " + winlose);                              
                                  return userChoice;
                                  break;
                        case 4:
                                  break;
                        default:
                             JOptionPane.showMessageDialog (null, "Error!! Please enter a valid option!"
                                                                                              , JOptionPane.WARNING_MESSAGE);
                        break;
         public static int getComputersChoice ()
              int computersChoice = (int) (3 * Math.random() + 1);
              return computersChoice;
         public static String itemName (int userChoice)
              if (userChoice == 1)
                   String itemName = Rock;
              else
                   if (userChoice == 2)
                        String itemName = Paper;
                   else
                        if (userChoice == 3)
                             String itemName = Scissors;
              return itemName;
              public static string itemName2 (int computersChoice)
              if (computersChoice == 1)
                   String itemName2 = Rock;
              else
                   if (computersChoice == 2)
                        String itemName2 = Paper;
                   else
                        if (computersChoice == 3)
                             String itemName2 = Scissors;
              return itemName2;
         public static string winlose (int winner)
              if (winner == 1)
                   winlose = "You Win!!!";
              else
              if (winner == 2)
                   winlose = "You Lose!!";
              else
              if (winner == 3)
                   winlose = "Its a Tie!!";
         return winlose;
         public static string winnerName (int winner)
              if (winner == 1)
                   String winnerName = "User";
              else
              if (winner == 2)
                   String winnerName = "Computer";
              else
              if (winner == 2)
                   String winnerName = "Tie";
              return winnerName;
         public static void whoWins (int computersChoice, int userChoice)
              if (userChoice == 1 && computersChoice == 1)
                   int winner = 3;
              else
              if (userChoice == 1 && computersChoice == 2)
                   int winner = 2;
              else
              if (userChoice == 1 && computersChoice == 3)
                   int winner = 1;
              else
              if (userChoice == 2 && computersChoice == 1)
                   int winner = 1;
              else
              if (userChoice == 2 && computersChoice == 2)
                   int winner = 3;
              else
              if (userChoice == 2 && computersChoice == 3)
                   int winner = 2;
              else
              if (userChoice == 3 && computersChoice == 1)
                   int winner = 2;
              else {
              if (userChoice == 3 && computersChoice == 2)
                   int winner = 1;
              else
              if (userChoice == 3 && computersChoice == 3)
                   int winner = 3;
              return winner;
         public static void main (String args [])
              getUserChoice ( );
              System.exit (0);
    }

    Here's something to compare to
    import javax.swing.*;
    public class RockPaperScissors
      public RockPaperScissors()
        String[] pick = {"Rock","Paper","Scissors","Exit"};
        int user = 0, computer = 0;
        String result = "", output = "";
        while(user < 3)
          user = JOptionPane.showOptionDialog(null,"Which do you want?",
                               "Rock-Paper-Scissors",-1,-1,null,pick,"");
          if(user == 3) break;
          computer = (int)(3*Math.random());
          result = getWinner(user,computer);
          output = "You chose "+pick[user] + "\nComputer chose " + pick[computer]+
                   "\n\nResult:- " + result;
          JOptionPane.showMessageDialog(null,output);        
        System.exit(0);
      public String getWinner(int player, int comp)
        if(Math.abs(player - comp) > 1)
          if(player == 2) player = -1;
          if(comp == 2) comp = -1;
        return player > comp? "You win.":player < comp? "Computer wins.":"Tie.";
      public static void main(String[] args){new RockPaperScissors();}
    }

  • Help with 7 segment led program

    hey, I need some help with my program. The program is supposed to make digital numbers display randomly with a possible decimal point in it. If the decimal # has a leading zero, then the zero needs to be not displayed. also, when you click the change color button, the numbers and decimal point are supposed to change to one of three preset colors. I've got the numbers changing colors, but I can't get the decimal point to change color, nor can I get the numbers to change randomly.
    package led7segment;
    import java.awt.event.*;
    import javax.swing.*;
    * Robert Lundahl
    * cs1410-002
    * @author Matthew Lohmeyer
    public class Main {
         * @param args the command line arguments
        public static void main(String[] args) throws InterruptedException {
            // TODO code application logic here
            JFrame.setDefaultLookAndFeelDecorated(true);
            MyJFrame mjf = new MyJFrame();
            while (true) {
                int deci = (int)(Math.random() * 3);
                int num = (int)(Math.random() * 1000);
                Digit.DisplayNumber(num, deci);
                Thread.sleep(4000);
    package led7segment;
    import java.awt.Color;
    import java.awt.event.*;
    import javax.swing.*;
    * Robert Lundahl
    * cs1410-002
    * @author Matthew Lohmeyer
    public class MyJFrame extends JFrame implements ActionListener{
        private JButton jb1, jb2, jb3;
        Digit d1, d2, d3;
        Oval deci;
        Color c;
        Oval o1, o2, o3;
        public MyJFrame()
            super("LED Display");
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setBounds(50, 50, 500, 320);
            setVisible(true);
            setLayout(null);
    //        jb1 = new JButton("Down");
    //        jb1.setBounds(10,225, 75, 50);
    //        add(jb1);
    //        jb1.addActionListener(this);
            jb2 = new JButton("Change Color");
            jb2.setBounds(10,225, 200, 50);
            add(jb2);
            jb2.addActionListener(this);
            jb3 = new JButton("Exit");
            jb3.setBounds(250,225, 100, 50);
            add(jb3);
            jb3.addActionListener(this);
            d1 =new Digit(7);
            add(d1);
            d1.setBounds(10,10,120,190);
            d1.setVisible(true);
            d2 =new Digit(7);
            d2.setBounds(150,10,120,190);
            add(d2);
            d2.setVisible(true);
            d3 =new Digit(7);
            d3.setBounds(300,10,120,190);
            add(d3);
            d3.setVisible(true);
            o1 = new Oval(125, 160, 15, 15);
            o1.setVisible(true);
            add(o1, 0);
            o2 = new Oval(275, 160, 15, 15);
            o2.setVisible(true);
            add(o2, 0);
            o3 = new Oval(425, 160, 15, 15);
            o3.setVisible(true);
            add(o3, 0);
            repaint();
        public void actionPerformed(ActionEvent e) {
            Object j = e.getSource();
    //        if(j==jb1)
    //            d1.incDown();
    //            d2.incDown();
    //            d3.incDown();
            if(j==jb2)
                d1.changeColor();
                d2.changeColor();
                d3.changeColor();
                o1.changeColor();
            else if(j==jb3)
                d1.incUp();
                d2.incUp();
                d3.incUp();
    package led7segment;
    import java.awt.Color;
    import java.awt.event.*;
    import javax.swing.*;
    * Robert Lundahl
    * cs1410-002
    * @author Matthew Lohmeyer
    public class Digit extends JComponent{
        Rectangle rect[] = new Rectangle[7];
        Oval o1[] = new Oval[7];
        private boolean decimal;
        private Color mycolor[] = new Color[]{Color.RED, Color.GREEN,  Color.BLUE};
        private int cindex = 0;
        private int increment =8;
        private Rectangle topRectangle = new Rectangle(23, 10, 66, 20);
        private Rectangle leftTopRectangle = new Rectangle(0, 13, 20, 76);
        private Rectangle leftBottomRectangle = new Rectangle(0, 92, 20, 76);
        private Rectangle bottomRectangle = new Rectangle(23, 151, 66, 20);
        private Rectangle rightBottomRectangle = new Rectangle(92, 92, 20, 76);
        private Rectangle rightTopRectangle = new Rectangle(92, 13, 20, 76);
        private Rectangle midRectangle = new Rectangle(23, 82, 66, 20);
        public Digit(int n)
            super();
            rect[0] = topRectangle;
            rect[1] = leftTopRectangle;
            rect[2] = midRectangle;
            rect[3] = leftBottomRectangle;
            rect[4] = bottomRectangle;
            rect[5] = rightTopRectangle;
            rect[6] = rightBottomRectangle;
            for (int i = 0; i<7; i++)
                add(rect);
    setVisible(true);
    public void HideDigit(){
    for (int i = 0; i<7; i++)
    rect[i].setVisible(false);
    void changeColor() {
    if(cindex==3)
    cindex=0;
    for (int i = 0; i < rect.length; i++) {
    rect[i].setBackground(mycolor[cindex]);
    //o1[i].setBackground(mycolor[cindex]);
    cindex++;
    void DisplayNumber(int n, int decimals)
    n=increment;
    switch(increment)
    case 0:
    displayzero();
    break;
    case 1:
    displayone();
    break;
    case 2:
    displaytwo();
    break;
    case 3:
    displaythree();
    break;
    case 4:
    displayfour();
    break;
    case 5:
    displayfive();
    break;
    case 6:
    displaysix();
    break;
    case 7:
    displayseven();
    break;
    case 8:
    displayeight();
    break;
    case 9:
    displaynine();
    break;
    public void SetDecimal(boolean flag)
    decimal = flag;
    o1.setVisible(decimal);
    // void incDown() {
    // if(increment==0)
    // increment=10;
    // increment--;
    // switch(increment)
    // case 0:
    // displayzero();
    // break;
    // case 1:
    // displayone();
    // break;
    // case 2:
    // displaytwo();
    // break;
    // case 3:
    // displaythree();
    // break;
    // case 4:
    // displayfour();
    // break;
    // case 5:
    // displayfive();
    // break;
    // case 6:
    // displaysix();
    // break;
    // case 7:
    // displayseven();
    // break;
    // case 8:
    // displayeight();
    // break;
    // case 9:
    // displaynine();
    // break;
    void incUp() {
    System.exit(WIDTH);
    // if(increment==9)
    // increment=-1;
    // increment++;
    // switch(increment)
    // case 0:
    // displayzero();
    // break;
    // case 1:
    // displayone();
    // break;
    // case 2:
    // displaytwo();
    // break;
    // case 3:
    // displaythree();
    // break;
    // case 4:
    // displayfour();
    // break;
    // case 5:
    // displayfive();
    // break;
    // case 6:
    // displaysix();
    // break;
    // case 7:
    // displayseven();
    // break;
    // case 8:
    // displayeight();
    // break;
    // case 9:
    // displaynine();
    // break;
    void displayzero()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(false);
    leftBottomRectangle.setVisible(true);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displayone()
    topRectangle.setVisible(false);
    leftTopRectangle.setVisible(false);
    midRectangle.setVisible(false);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(false);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displaytwo()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(false);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(true);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(false);
    void displaythree()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(false);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displayfour()
    topRectangle.setVisible(false);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(false);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displayfive()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(false);
    rightBottomRectangle.setVisible(true);
    void displaysix()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(true);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(false);
    rightBottomRectangle.setVisible(true);
    void displayseven()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(false);
    midRectangle.setVisible(false);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(false);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displayeight()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(true);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    void displaynine()
    topRectangle.setVisible(true);
    leftTopRectangle.setVisible(true);
    midRectangle.setVisible(true);
    leftBottomRectangle.setVisible(false);
    bottomRectangle.setVisible(true);
    rightTopRectangle.setVisible(true);
    rightBottomRectangle.setVisible(true);
    package led7segment;
    import javax.swing.*;
    import java.awt.*;
    /** Oval Supplier Class
    * Robert Lundahl
    * cs1410-002
    * @author Matthew Lohmeyer
    public class Oval extends JComponent {
    private Color mycolor[] = new Color[]{Color.RED, Color.GREEN,  Color.BLUE};
    private int cindex = 0;
    Oval o1[] = new Oval[0];
    /** post: getX() == x and getY() == y
    * and getWidth() == w and getHeight() == h
    * and getBackground() == Color.black
         public Oval(int x, int y, int w, int h) {
    super();
    setBounds(x, y, w, h);
    setBackground(Color.black);
    /** post: this method draws a filled Oval
    * and the upper left corner of the bounding rectangle is (getX(), getY())
    * and the oval's dimensions are getWidth() and getHeight()
    * and the oval's color is getBackground()
    @Override
    public void paint(Graphics g) {
    g.setColor( getBackground() );
    g.fillOval(0, 0, getWidth()-1, getHeight()-1);
    paintChildren(g);
    void changeColor() {
    if(cindex==3)
    cindex=0;
    for (int i = 0; i < o1.length; i++) {
    //rect[i].setBackground(mycolor[cindex]);
    o1[i].setBackground(mycolor[cindex]);
    cindex++;
    package led7segment;
    import java.awt.Color;
    import java.awt.Graphics;
    import java.awt.event.*;
    import javax.swing.*;
    * Robert Lundahl
    * cs1410-002
    * @author Matthew Lohmeyer
    public class Rectangle extends JComponent
    public Rectangle(int x, int y, int w, int h) {
    super();
         setBounds(x, y, w, h);
    setBackground(Color.black);
    @Override
    public void paint(Graphics g) {
    g.setColor( getBackground() );
    g.fillRect(0, 0, getWidth()-1, getHeight()-1);
    paintChildren(g);
    Edited by: matttheskibum7 on Feb 9, 2008 8:22 PM
    Edited by: matttheskibum7 on Feb 9, 2008 8:27 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

    Your code does not compile.
    EDIT:
    for instance your Main class alone has a several glaring problems that suggest that you are foundering here. Please see comments in code below:
    public class Main {
        public static void main(String[] args) throws InterruptedException {
            JFrame.setDefaultLookAndFeelDecorated(true);
            MyJFrame mjf = new MyJFrame();
            // why use "while (true)"??? Swing is supposed to be event driven and doesn't need loops like this.
            // do you need to use a Swing Timer instead?
            while (true) {
                int deci = (int)(Math.random() * 3);
                int num = (int)(Math.random() * 1000);
                // why is the method below being called as if it were a
                // static method when it's not?  This is not a legal
                // expression
                Digit.DisplayNumber(num, deci);
                // why is the method below putting the event dispatch thread
                // (the EDT) to sleep.  While this is legal, it's not a smart
                // thing to do
                Thread.sleep(4000);
    }Edited by: Encephalopathic on Feb 9, 2008 10:15 PM

  • Help with implementing two different programs

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    The code you post is javascript, NOT java ! ... but either way, maybe the scripts have variables in conflict, so if you pack each piece of code in diferent functions and then you call the functions it may work.

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