Need Help with a getText method

Gday all,
I need help with a getText method, i need to extract text from a JTextField. Although this text then needs to converted to a double so that i can multiply a number that i have already specified. As you may of guessed that the text i need to extract already will be in a double format.e.g 0.1 or 0.0000004 etc
Thanks for your help
ps heres what i have already done its not very good though
ToBeConverted.getText();
( need help here)
double amount = (and here)
total = (amount*.621371192);
Converted.setText("= " + total);

Double.parseDouble( textField.getText() );

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I need help with this recursion method

     public boolean findTheExit(int row, int col) {
          char[][] array = this.getArray();
          boolean escaped = false;
          System.out.println("row" + " " + row + " " + "col" + " " + col);
          System.out.println(array[row][col]);
          System.out.println("escaped" + " " + escaped);
          if (possible(row, col)){
               System.out.println("possible:" + " " + possible(row,col));
               array[row][col] = '.';
          if (checkBorder(row, col)){
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               escaped = true;
          else {
                System.out.println();
                escaped = findTheExit(row+1, col);
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                else if (escaped == false)
                escaped = findTheExit(row, col-1);
          if (escaped == true)
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     }I am having difficulties with this recursion method. What I wanted here is that when :
if escaped = findTheExit(row+1, col); I am having trouble with the following statement:
A base case has been reached, escaped(false) is returned to RP1. The algorithm backtracks to the call where row = 2 and col = 1 and assigns false to escaped.
How do I fix this code?
I know what's wrong with my code now, even though that if
if (possible(row, col))
[/code[
returns false then it will go to if (escaped == false)
               escaped = findTheExit(row, col+1);
how do I do this?

Okay I think I got the problem here because I already consult with the instructor, he said that by my code now I am not updating my current array if I change one of the values in a specific row and column into '.' . How do I change this so that I can get an update array. He said to me to erase char[][] array = getArray and replace it with the array instance variable in my class. But I don't have an array instance variable in my class. Below is my full code:
public class ObstacleCourse implements ObstacleCourseInterface {
     private String file = "";
     public ObstacleCourse(String filename) {
          file = filename;
     public boolean findTheExit(int row, int col) {
          boolean escaped = false;
          //System.out.println("row" + " " + row + " " + "col" + " " + col);
          //System.out.println(array[row][col]);
          //System.out.println("escaped" + " " + escaped);
          if (possible(row, col)){
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               else {
                escaped = findTheExit(row+1, col);
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                else if (escaped == false)
                escaped = findTheExit(row, col-1);
          if (escaped == true)
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     public char[][] getArray() {
          char[][] result = null;
          try {
               Scanner s = new Scanner(new File(file));
               int row = 0;
               int col = 0;
               row = s.nextInt();
               col = s.nextInt();
               String x = "";
               result = new char[row][col];
               s.nextLine();
               for (int i = 0; i < result.length; i++) {
                    x = s.nextLine();
                    for (int j = 0; j < result.length; j++) {
                         result[i][j] = x.charAt(j);
          } catch (Exception e) {
          return result;
     public int getStartColumn() {
          char[][] result = this.getArray();
          int columns = -1;
          for (int i = 0; i < result.length; i++) {
               for (int j = 0; j < result[i].length; j++) {
                    if (result[i][j] == 'S')
                         columns = j;
          return columns;
     public int getStartRow() {
          char[][] result = this.getArray();
          int row = -1;
          for (int i = 0; i < result.length; i++) {
               for (int j = 0; j < result[i].length; j++) {
                    if (result[i][j] == 'S')
                         row = i;
          return row;
     public boolean possible(int row, int col) {
          boolean result = false;
          char[][] array = this.getArray();
          if (array[row][col] != '+' && array[row][col] != '.')
               result = true;
          return result;
     public String toString() {
          String result = "";
          try {
               Scanner s = new Scanner(new File(file));
               s.nextLine();
               while (s.hasNextLine())
                    result += s.nextLine() + "\n";
          } catch (Exception e) {
          return result;
     public boolean checkBorder(int row, int col) {
          char[][] array = this.getArray();
          boolean result = false;
          int checkRow = 0;
          int checkColumns = 0;
          try {
               Scanner s = new Scanner(new File(file));
               checkRow = s.nextInt();
               checkColumns = s.nextInt();
          } catch (Exception e) {
          if ((row + 1 == checkRow || col + 1 == checkColumns) && array[row][col] != '+')
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I thought that my problem would be not to read the file using the try and catch everytime in the method. How do I do this?? Do I have to create an array instance variable in my class?

I need help with my remove method on a BST!

Guys I need some help here, I have to create a remove method for a BST and below is my code:
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private boolean remove( BinaryTreeNode t, Comparable elementToRemove )
Set result to false
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return result (false)
Case 2: The root is to be removed, but it has no left child.
root = root's right subtree (assuming root refers the the root node in your BST)
Case 3: The node is further down tree with no left child. Now must adjust one of the parent's links
if curr is on the left side of prev,
move parent's left link down to down to curr's right child
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I am sorry about the double post. I'll try not to do this again. My problem here seems to be that prev and curr aren't updating the BST outside this method, which means that it only changes locally but not permanently. I will post the code of the other headings:
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Hi, I need to create a class called Proposition. It include a Proposition object with 3 variables
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private String description;
private boolean value;
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Thx!

Your setProp() method should not be returning anything. After all it is setting not getting. So just declare it as
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Please reply soon!!! Thanks in advance.

class a
private static String aa = "";
public static setVar (String var)
aa = var;
class b
public void init()
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b myB = new b ();
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bye _drag

Need help with a remove method..

Hello. I'm getting started on a project here to implement a recursive remove method that will remove any number from a list. I was given a test that the method must pass, but I'm having some trouble getting started. This is my second interaction with the idea of recursion and it's a bit difficult for me.
Here is the test I'm writing the method for:
public void testRemove() {
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          for (int i = -10; i < 11; i++)list.insert(i);
          int numElements = list.length();
          list.remove(element);
          for (int e : list) {
               if ( e == element ) inList = true;
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If anyone can give me any ideas or direction it would be greatly appreciated.

Thanks for the quick reply, from what I had gathered and what you posted I'm starting to see where I need to go from here. I had gotten as far as if list is null return null, and the cod that you posted makes sense, but implementing it into the source code I already have will be troubling for me. The code as you presented it I have no trouble understanding, for example:
if (list.data == data) return list.next;
list.next=remove(list.next, data);Is clear to me, however I don't know how to implement that into my code. This is the code for the insert method:
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public class Node<E> {
// Instance variables:
private E element;
private Node<E> next;
/** Creates a node with null references to its element and next node. */
public Node() {
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/** Creates a node with the given element and next node. */
public Node(E e, Node<E> n) {
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    next = n;
// Accessor methods:
public E getElement() {
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public Node<E> getNext() {
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// Modifier methods:
public void setElement(E newElem) {
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public void setNext(Node<E> newNext) {
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public String toString() {
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}

Need help with project (calling methods) please!!

Hi there i have a project for uni requiring me to create a java program that creates a random No. and lets the user have three guesses to find the No. When the users guesses correct he gets a message telling him hes won and if he doesnt get it correct he gets a message telling him the correct No then terminates.
The code has to call an outside method called[b] Public Static Boolean CheckGuess
I have tried to create this and got it to compile with no errors (eventually) but i keep getting a message saying i have whenever i type any number in. I think the problem is the way i am calling the method i havnt got much experience this is all pretty new to me any help would be really appreciated. Thanks.
import javax.swing.*;
import java.util.*;
public class Coursework1{
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          String usersguess,output;
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                         if (match=true){
                         //display text area in JoptionPane
                         output="You won";
                         JOptionPane.showMessageDialog(null,output,"You Won",JOptionPane.INFORMATION_MESSAGE);
                         break;}
                         else{
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                         JOptionPane.showInputDialog("Try again");
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               } //end for
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                         //user defined method
                         public static boolean checkGuess(int usersguessint,int randomnumber){
                         boolean match = false;
                         if (usersguessint == randomnumber){
                         match = true;
                         return match;
                         }//end method
     }//endclass

Thank you very much that worked a treat the program is working better now. I have just realised that my for loopcontaining my counter may be in the wrong place as the program is running though both messages 3 times e.g
"Please enter your guess between 1 & 10"
"Try again"
"Please enter your guess between 1 & 10"
"Try again"
"Please enter your guess between 1 & 10"
"Try again"
"Please enter your guess between 1 & 10"
"Try again"
I want my program to run like
"Please enter your guess between 1 & 10"
"Try again"
"Try again"
"Try again"
Do u think if i placed my for stament (counter) in between the two messages it would eliminate this problem.

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hey to all my java Pals =)
i am working on an application right now
and my exit method behaves strangly
when you go to File|Exit
it will say
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here is the code
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Message was edited by:
Apaula30

duplicate message #2

Need help with JTextArea and Scrolling

import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
import javax.swing.*;
public class MORT_RETRY extends JFrame implements ActionListener
private JPanel keypad;
private JPanel buttons;
private JTextField lcdLoanAmt;
private JTextField lcdInterestRate;
private JTextField lcdTerm;
private JTextField lcdMonthlyPmt;
private JTextArea displayArea;
private JButton CalculateBtn;
private JButton ClrBtn;
private JButton CloseBtn;
private JButton Amortize;
private JScrollPane scroll;
private DecimalFormat calcPattern = new DecimalFormat("$###,###.00");
private String[] rateTerm = {"", "7years @ 5.35%", "15years @ 5.5%", "30years @ 5.75%"};
private JComboBox rateTermList;
double interest[] = {5.35, 5.5, 5.75};
int term[] = {7, 15, 30};
double balance, interestAmt, monthlyInterest, monthlyPayment, monPmtInt, monPmtPrin;
int termInMonths, month, termLoop, monthLoop;
public MORT_RETRY()
Container pane = getContentPane();
lcdLoanAmt = new JTextField();
lcdMonthlyPmt = new JTextField();
displayArea = new JTextArea();//DEFINE COMBOBOX AND SCROLL
rateTermList = new JComboBox(rateTerm);
scroll = new JScrollPane(displayArea);
scroll.setSize(600,170);
scroll.setLocation(150,270);//DEFINE BUTTONS
CalculateBtn = new JButton("Calculate");
ClrBtn = new JButton("Clear Fields");
CloseBtn = new JButton("Close");
Amortize = new JButton("Amortize");//DEFINE PANEL(S)
keypad = new JPanel();
buttons = new JPanel();//DEFINE KEYPAD PANEL LAYOUT
keypad.setLayout(new GridLayout( 4, 2, 5, 5));//SET CONTROLS ON KEYPAD PANEL
keypad.add(new JLabel("Loan Amount$ : "));
keypad.add(lcdLoanAmt);
keypad.add(new JLabel("Term of loan and Interest Rate: "));
keypad.add(rateTermList);
keypad.add(new JLabel("Monthly Payment : "));
keypad.add(lcdMonthlyPmt);
lcdMonthlyPmt.setEditable(false);
keypad.add(new JLabel("Amortize Table:"));
keypad.add(displayArea);
displayArea.setEditable(false);//DEFINE BUTTONS PANEL LAYOUT
buttons.setLayout(new GridLayout( 1, 3, 5, 5));//SET CONTROLS ON BUTTONS PANEL
buttons.add(CalculateBtn);
buttons.add(Amortize);
buttons.add(ClrBtn);
buttons.add(CloseBtn);//ADD ACTION LISTENER
CalculateBtn.addActionListener(this);
ClrBtn.addActionListener(this);
CloseBtn.addActionListener(this);
Amortize.addActionListener(this);
rateTermList.addActionListener(this);//ADD PANELS
pane.add(keypad, BorderLayout.NORTH);
pane.add(buttons, BorderLayout.SOUTH);
pane.add(scroll, BorderLayout.CENTER);
addWindowListener( new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
public void actionPerformed(ActionEvent e)
String arg = lcdLoanAmt.getText();
int combined = Integer.parseInt(arg);
if (e.getSource() == CalculateBtn)
try
JOptionPane.showMessageDialog(null, "Got try here", "Error", JOptionPane.ERROR_MESSAGE);
catch(NumberFormatException ev)
JOptionPane.showMessageDialog(null, "Got here", "Error", JOptionPane.ERROR_MESSAGE);
if ((e.getSource() == CalculateBtn) && (arg != null))
try{
if ((e.getSource() == CalculateBtn) && (rateTermList.getSelectedIndex() == 1))
monthlyInterest = interest[0] / (12 * 100);
termInMonths = term[0] * 12;
monthlyPayment = combined * (monthlyInterest / (1 - (Math.pow (1 + monthlyInterest, -termInMonths))));
lcdMonthlyPmt.setText(calcPattern.format(monthlyPayment));
if ((e.getSource() == CalculateBtn) && (rateTermList.getSelectedIndex() == 2))
monthlyInterest = interest[1] / (12 * 100);
termInMonths = term[1] * 12;
monthlyPayment = combined * (monthlyInterest / (1 - (Math.pow (1 + monthlyInterest, -termInMonths))));
lcdMonthlyPmt.setText(calcPattern.format(monthlyPayment));
if ((e.getSource() == CalculateBtn) && (rateTermList.getSelectedIndex() == 3))
monthlyInterest = interest[2] / (12 * 100);
termInMonths = term[2] * 12;
monthlyPayment = combined * (monthlyInterest / (1 - (Math.pow (1 + monthlyInterest, -termInMonths))));
lcdMonthlyPmt.setText(calcPattern.format(monthlyPayment));
catch(NumberFormatException ev)
JOptionPane.showMessageDialog(null, "Invalid Entry!\nPlease Try Again", "Error", JOptionPane.ERROR_MESSAGE);
} //IF STATEMENTS FOR AMORTIZATION
if ((e.getSource() == Amortize) && (rateTermList.getSelectedIndex() == 1))
loopy(7, 5.35);
if ((e.getSource() == Amortize) && (rateTermList.getSelectedIndex() == 2))
loopy(15, 5.5);
if ((e.getSource() == Amortize) && (rateTermList.getSelectedIndex() == 3))
loopy(30, 5.75);
if (e.getSource() == ClrBtn)
rateTermList.setSelectedIndex(0);
lcdLoanAmt.setText(null);
lcdMonthlyPmt.setText(null);
displayArea.setText(null);
if (e.getSource() == CloseBtn)
System.exit(0);
private void loopy(int lTerm,double lInterest)
double total, monthly, monthlyrate, monthint, monthprin, balance, lastint, paid;
int amount, months, termloop, monthloop;
String lcd2 = lcdLoanAmt.getText();
amount = Integer.parseInt(lcd2);
termloop = 1;
paid = 0.00;
monthlyrate = lInterest / (12 * 100);
months = lTerm * 12;
monthly = amount *(monthlyrate/(1-Math.pow(1+monthlyrate,-months)));
total = months * monthly;
balance = amount;
while (termloop <= lTerm)
displayArea.setCaretPosition(0);
displayArea.append("\n");
displayArea.append("Year " + termloop + " of " + lTerm + ": payments\n");
displayArea.append("\n");
displayArea.append("Month\tMonthly\tPrinciple\tInterest\tBalance\n");
monthloop = 1;
while (monthloop <= 12)
monthint = balance * monthlyrate;
monthprin = monthly - monthint;
balance -= monthprin;
paid += monthly;
displayArea.setCaretPosition(0);
displayArea.append(monthloop + "\t" + calcPattern.format(monthly) + "\t" + calcPattern.format(monthprin) + "\t");
displayArea.append(calcPattern.format(monthint) + "\t" + calcPattern.format(balance) + "\n");
monthloop ++;
termloop ++;
public static void main(String args[])
MORT_RETRY f = new MORT_RETRY();
f.setTitle("MORTGAGE PAYMENT CALCULATOR");
f.setBounds(600, 600, 500, 500);
f.setLocationRelativeTo(null);
f.setVisible(true);
}need help with displaying the textarea correctly and the scroll bar please.
Message was edited by:
new2this2020

What's the problem you're having ???
PS.

Need Help With File Matching Records

I need help with my file matching program.
Here is how it suppose to work: FileMatch class should contain methods to read oldmast.txt and trans.txt. When a match occurs (i.e., records with the same account number appear in both the master file and the transaction file), add the dollar amount in the transaction record to the current balance in the master record, and write the "newmast.txt" record. (Assume that purchases are indicated by positive amounts in the transaction file and payments by negative amounts.)
When there is a master record for a particular account, but no corresponding transaction record, merely write the master record to "newmast.txt". When there is a transaction record, but no corresponding master record, print to a log file the message "Unmatched transaction record for account number ..." (fill in the account number from the transaction record). The log file should be a text file named "log.txt".
Here is my following program code:
// Exercise 14.8: CreateTextFile.java
// creates a text file
import java.io.FileNotFoundException;
import java.lang.SecurityException;
import java.util.Formatter;
import java.util.FormatterClosedException;
import java.util.NoSuchElementException;
import java.util.Scanner;
import org.egan.AccountRecord;
import org.egan.TransactionRecord;
public class CreateTextFile
private Formatter output1; // object used to output text to file
private Formatter output2; // object used to output text to file
// enable user to open file
public void openTransFile()
    try
      output1 = new Formatter("trans.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 openTransFile
// enable user to open file
public void openOldMastFile()
    try
      output2 = new Formatter("oldmast.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 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
        if (record1.getAccount() > 0)
          // write new record
          output1.format("%d %.2f\n", record1.getAccount(), record1.getAmount());
        } // end if
        else
          System.out.println("Account number must be greater than 0.");
        } // end else
      } // end try
      catch (FormatterClosedException formatterClosedException)
        System.err.println("Error writing to file.");
        return;
      } // end catch
      catch (NoSuchElementException elementException)
        System.err.println("Invalid input. Please try again.");
        input1.nextLine(); // discard input so user can try again
      } // end catch
      System.out.printf("%s %s\n%s", "Enter account number (> 0) ",
        "and amount.","? ");
    } // end while
} // end method addTransactionRecords
// add account records to file
public void addAccountRecords()
    // object to be written to file
    AccountRecord record2 = new AccountRecord();
    Scanner input2 = 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), first name, last name and balance.","? ");
    while (input2.hasNext()) // loop until end-of-file indicator
      try // output values to file
        // retrieve data to be output
        record2.setAccount(input2.nextInt());    // read account number
        record2.setFirstName(input2.next());      // read first name
        record2.setLastName(input2.next());       // read last name
        record2.setBalance(input2.nextDouble()); // read balance
        if (record2.getAccount() > 0)
          // write new record
          output2.format("%d %s %s %.2f\n", record2.getAccount(), record2.getFirstName(),
            record2.getLastName(), record2.getBalance());
        } // end if
        else
          System.out.println("Account number must be greater than 0.");
        } // end else
      } // end try
      catch (FormatterClosedException formatterClosedException)
        System.err.println("Error writing to file.");
        return;
      } // end catch
      catch (NoSuchElementException elementException)
        System.err.println("Invalid input. Please try again.");
        input2.nextLine(); // discard input so user can try again
      } // end catch
      System.out.printf("%s %s\n%s", "Enter account number (> 0),",
        "first name, last name and balance.","? ");
    } // end while
} // end method addAccountRecords
// close file
public void closeTransFile()
    if (output1 != null)
      output1.close();
} // end method closeTransFile
// close file
public void closeOldMastFile()
    if (output2 != null)
      output2.close();
} // end method closeOldMastFile
} // end class CreateTextFile--------------------------------------------------------------------------------------------------
// Exercise 14.8: CreateTextFileTest.java
// Testing class CreateTextFile
public class CreateTextFileTest
   // main method begins program execution
   public static void main( String args[] )
     CreateTextFile application = new CreateTextFile();
     application.openTransFile();
     application.addTransactionRecords();
     application.closeTransFile();
     application.openOldMastFile();
     application.addAccountRecords();
     application.closeOldMastFile();
   } // end main
} // end class CreateTextFileTest-------------------------------------------------------------------------------------------------
// Exercise 14.8: TransactionRecord.java
// A class that represents on record of information
package org.egan; // packaged for reuse
public class TransactionRecord
private int account;
private double amount;
// no-argument constructor calls other constructor with default values
public TransactionRecord()
    this(0,0.0); // call two-argument constructor
} // end no-argument AccountRecord constructor
// initialize a record
public TransactionRecord(int acct, double amt)
    setAccount(acct);
    setAmount(amt);
} // end two-argument TransactionRecord constructor
// set account number
public void setAccount(int acct)
    account = acct;
} // end method setAccount
// get account number
public int getAccount()
    return account;
} // end method getAccount
// set amount
public void setAmount(double amt)
    amount = amt;
} // end method setAmount
// get amount
public double getAmount()
    return amount;
} // end method getAmount
} // end class TransactionRecord -------------------------------------------------------------------------------------------------
// Exercise 14.8: AccountRecord.java
// A class that represents on record of information
package org.egan; // packaged for reuse
import org.egan.TransactionRecord;
public class AccountRecord
private int account;
private String firstName;
private String lastName;
private double balance;
// no-argument constructor calls other constructor with default values
public AccountRecord()
    this(0,"","",0.0); // call four-argument constructor
} // end no-argument AccountRecord constructor
// initialize a record
public AccountRecord(int acct, String first, String last, double bal)
    setAccount(acct);
    setFirstName(first);
    setLastName(last);
    setBalance(bal);
} // end four-argument AccountRecord constructor
// set account number
public void setAccount(int acct)
    account = acct;
} // end method setAccount
// get account number
public int getAccount()
    return account;
} // end method getAccount
// set first name
public void setFirstName(String first)
    firstName = first;
} // end method setFirstName
// get first name
public String getFirstName()
    return firstName;
} // end method getFirstName
// set last name
public void setLastName(String last)
    lastName = last;
} // end method setLastName
// get last name
public String getLastName()
    return lastName;
} // end method getLastName
// set balance
public void setBalance(double bal)
    balance = bal;
} // end method setBalance
// get balance
public double getBalance()
    return balance;
} // end method getBalance
// combine balance and amount
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;
public class FileMatch
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(),
            account.getBalance());
            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(),
          account.getBalance());
          theLog.format("%s%d","Unmatched transaction record for account number ",transaction.getAccount());
      } // end while
      System.out.println("Finish file matching.");
    } // 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.");
      System.exit(1);
    } // 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:
100 Alan Jones 375.31
300 Mary Smith 173.19
500 Sam Sharp 0.00
700 Suzy Green 68.09The correct results for the log.txt:
Unmatched transaction record for account number 400Unmatched transaction record for account number 900------------------------------------------------------------------------------------------------
My results for the newmast.txt:
100 Alan Jones 375.31
300 Mary Smith 111.08
500 Sam Sharp 0.00
700 Suzy Green -12.69My results for the log.txt
Unmatched transaction record for account number 700-------------------------------------------------------------------------------------------------
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.
As to why the numbers are off -- just from glancing over it, it appears that the problem is when you add multiple transaction values. Since account.combine() is so simple, I suspect that you're either adding creating transaction objects incorrectly or not creating them when you should be.
Create test input data that isolates a single case of this (e.g., just the Mary Smith case), and then running your program in a debugger or adding debugging code to the add/combine method, so you can see what's happening in detail.
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.

I need Help with a website I've created

I need help with a website I've created (www.jonathanhazelwood.com/lighthouse) I created the folowing site with dreamweaver at my current resolution 1366 by 768. Looks great on my screen resolution but if it is viewed on other resolutions the menu moves and some of the text above and below. How can I keep all content centered and working like it does on 1366 by 768 on all resolutions. The htm to my site is below I started off with a blank template through dreamweaver CS5.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>The Lighthouse Church</title>
<style type="text/css">

</style>
<script src="SpryAssets/SpryMenuBar.js" type="text/javascript"></script>
<link href="SpryAssets/SpryMenuBarHorizontal.css" rel="stylesheet" type="text/css" />
<style type="text/css">
#apDiv12 {
    position:absolute;
    width:295px;
    height:23px;
    z-index:4;
    left: 198px;
    top: 1px;
#apDiv13 {
    position:absolute;
    width:135px;
    height:22px;
    z-index:5;
    left: 1001px;
    top: 3px;
#apDiv14 {
    position:absolute;
    width:309px;
    height:992px;
    z-index:1;
    left: 33px;
    top: 479px;
#apDiv15 {
    position:absolute;
    width:327px;
    height:999px;
    z-index:1;
    left: 324px;
#apDiv16 {
    position:absolute;
    width:262px;
    height:1000px;
    z-index:2;
    left: 674px;
    top: 477px;
#apDiv17 {
    position:absolute;
    width:85px;
    height:34px;
    z-index:1;
    left: -379px;
    top: 1001px;
#apDiv18 {
    position:absolute;
    width:200px;
    height:115px;
    z-index:6;
#apDiv19 {
    position:absolute;
    width:168px;
    height:31px;
    z-index:3;
    left: 448px;
    top: 1451px;
#apDiv20 {
    position:absolute;
    width:94px;
    height:33px;
    z-index:3;
    left: 384px;
    top: 1477px;
body {
    background-color: #000;
    margin-left: 0px;
    margin-right: 0px;
#apDiv21 {
    position:absolute;
    width:920px;
    height:200px;
    z-index:4;
    left: 19px;
    top: 233px;
</style>
</head>
<body>
<div class="container">
<div class="content">
    <div id="apDiv5">
      <div id="apDiv16">
        <div id="apDiv17">
          <map name="Map2" id="Map2">
            <area shape="rect" coords="4,2,77,28" href="http://www.myspace.com/lighthousechurch1" />
          </map>
          <img src="paypal-donate-button.png" width="83" height="33" border="0" usemap="#Map" />
          <map name="Map" id="Map">
            <area shape="rect" coords="2,2,80,30" href="https://www.paypal.com/us/cgi-bin/webscr?cmd=_flow&SESSION=HgApKd0bxyPQv1ixwBW3HgWXaLxPIiT Po9gSsRELLQp72IZ2-_8uvSmCLRO&dispatch=5885d80a13c0db1f8e263663d3faee8d9384d85353843a619606 282818e091d0" />
          </map>
        </div>
      </div>
      <div id="apDiv21">
        <blockquote>
          <blockquote>
            <blockquote>
              <blockquote>
                <blockquote>
                  <blockquote>
                    <p><img src="faithexplosion.png" width="314" height="225" /></p>
                  </blockquote>
                </blockquote>
              </blockquote>
            </blockquote>
          </blockquote>
        </blockquote>
      </div>
      <div id="apDiv14">
        <div id="apDiv15">
          <div>
            <div>
              <p> Special Message from Perry Stone </p>
              <h2> Was Jesus Born on December 25?</h2>
              <p> 12/20/2010 </p>
              <p><img alt="iStock_000003631829XSmall" src="http://www.voe.org/images/iStock_000003631829XSmall.jpg" width="300" height="234" /></p>
              <p>Last   year, in response to the growing number of Christians who celebrate   Hanukkah but hate Christmas, I wrote an article for this website titled   “Hanukkah or Christmas?” I explained why I think Jesus was either   conceived or birthed on December 25.</p>
            </div>
          </div>
          <div>
            <div><a href="http://www.voe.org/Prophecy-Update/what-happened-to-global-warming.html"> READ MORE</a>
              <p> Prophecy Update </p>
              <h2> What Happened to Global Warming?</h2>
              <p> 12/17/2010 </p>
              <p> </p>
            </div>
          </div>
          <div>
            <div></div>
          </div>
          <div>
            <div></div>
          </div>
        </div>
        <div>
          <p><font size="2">Special Word</font></p>
          <p><font size="2">January 7th, 2011</font></p>
          <p> <font size="2">Dear Viewers:</font></p>
          <p><font size="2">We have now entered into one of the most trying times; but also one of the most glorious            times in church history. Many things are coming upon the world and also upon the church and we (the church) must be totally            prepared to take up our cross daily and venture out into the lost and</font></p>
          <p> <a href="http://sermon.lighthousechurchinc.org/2011/01/07/special-word-1711-evangelist-barbara-lync h.aspx" target="_parent">Click Here for More</a></p>
        </div>
        <p> </p>
        <div></div>
        <div>
        </div>
        <div></div>
        <p> </p>
      </div>
      <img src="lighthousegraphic2.jpg" width="960" height="1509" />
      <div id="apDiv20"><img src="myspacebutton.jpg" width="89" height="30" border="0" usemap="#Map3" />
        <map name="Map3" id="Map3">
        <area shape="rect" coords="3,2,87,28" href="http://www.myspace.com/lighthousechurch1" />
      </map>
</div>
    </div>
<p> </p>
</div>
</div>
<div id="apDiv10"><font size="1"><font color="#FFFFFF">Copyright 2011 The Lighthouse Church Inc.</font></font></div>
<div id="apDiv11">
<ul id="MenuBar1" class="MenuBarHorizontal">
    <li><a href="#">Home</a>    </li>
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      <ul>
        <li><a href="#">Chris Gore</a></li>
</ul>
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      <ul>
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<script type="text/javascript">
var MenuBar1 = new Spry.Widget.MenuBar("MenuBar1", {imgDown:"SpryAssets/SpryMenuBarDownHover.gif", imgRight:"SpryAssets/SpryMenuBarRightHover.gif"});
</script>
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</html>

Look at all the apdiv's you have. Those are absolutely positioned layers. I'm assuming by your post that you are very new to Dreamweaver and HTML and CSS. I would highly recommend not using absolutely positioned layers until you have a better grasp on HTML and CSS.
Looking at your code I would suggest that you consider using one of Dreamweaver's built in, or downloadable templates as a starting point and work from there.
http://www.adobe.com/devnet/dreamweaver/articles/dreamweaver_custom_templates.html

I need help with a VB Application

I need help with building an application and I am on a tight deadline. Below I have included the specifics for what I need the application to do as well as the code that I have completed so far. I am having trouble getting the data input into
the text fields to save to a .txt file. Also, I need validation to ensure that the values entered into the text fields coincide with the field type. I am new to VB so please be gentle. Any help would be appreciated. Thanx
•I need to use the OpenFileDialog and SaveFileDialog in my application.
•Also, I need to use a structure.
1. The application needs to prompt the user to enter the file name on Form_Load.
2. Also, the app needs to use the AppendText method to write the Employee Data to the text file. My project should allow me to write multiple Employee Data to the same text file. The data should be written to the text file in the following format (comma
delimited)
FirstName, MiddleName, LastName, EmployeeNumber, Department, Telephone, Extension, Email
3. The Department dropdown menu DropDownStyle property should be set so that the user cannot enter inputs that are not in the menu.
Public Class Form1
Dim filename As String
Dim oFile As System.IO.File
Dim oWrite As System.IO.StreamWriter
Dim openFileDialog1 As New OpenFileDialog()
Dim fileLocation As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
openFileDialog1.InitialDirectory = "c:\"
openFileDialog1.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*"
openFileDialog1.FilterIndex = 1
openFileDialog1.RestoreDirectory = True
If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
fileLocation = openFileDialog1.FileName
End If
'filename = InputBox("Enter output file name")
'oWrite = oFile.CreateText(filename)
cobDepartment.Items.Add("Accounting")
cobDepartment.Items.Add("Administration")
cobDepartment.Items.Add("Marketing")
cobDepartment.Items.Add("MIS")
cobDepartment.Items.Add("Sales")
End Sub
Private Sub btnSave_Click(ByValsender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
'oWrite.WriteLine("Write e file")
oWrite.WriteLine("{0,10}{1,10}{2,10}{3,10}{4,10}{5,10}{6,10}{7,10}", txtFirstname.Text, txtMiddlename.Text, txtLastname.Text, txtEmployee.Text, cobDepartment.SelectedText, txtTelephone.Text, txtExtension.Text, txtEmail.Text)
oWrite.WriteLine()
End Sub
Private Sub btnExit_Click(ByValsender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
oWrite.Close()
End
End Sub
Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click
txtFirstname.Text = ""
txtMiddlename.Text = ""
txtLastname.Text = ""
txtEmployee.Text = ""
txtTelephone.Text = ""
txtExtension.Text = ""
txtEmail.Text = ""
cobDepartment.SelectedText = ""
End Sub
End Class

Hi Mikey81,
Your issue is about VB programming, so Visual Basic forum is a better forum for your case. I moved this thread there,
Thanks,
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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Need help with my usecase based on transient ViewObject

I am using 11.1.1.4.0 Jdev version. I need help with my usecase.Been trying it for 2 days but couldn't figure out the issue.
I have a transientVO . In this VO Rows will be populated programmatically. CountryId is an attribute of this VO. I have created a viewAccessor "CountriesVA" from Country VO of HR schema.
I have a LOV for the countryId which is based on this VA ,getting countries from CountryTable.
This is the model part which works fine.
Before the page load i have called a method to create a row for this transientVO.Once the row is created i can see the SOC in my page which i have created as below.
Now i want to insert a row in the transientVO if user selects a country and restrict duplicate entry . (As One row is already created 1st time there will be no rows created.after that rows will be inserted)
The issue is :: Suppose there are 2 countries. A & B .When user does the following actions :
Insert A . Done //as 1st entry
Insert B . Done //as 1st time entry
Insert A . duplicate not inserted
Insert B . getting inserted // the bug.
<af:selectOneChoice value="#{bindings.CountryId.inputValue}"
                        label="#{bindings.CountryId.label}"
                        required="#{bindings.CountryId.hints.mandatory}"
                        shortDesc="#{bindings.CountryId.hints.tooltip}" id="soc1"
                        immediate="true" autoSubmit="true"
                        valueChangeListener="#{pageFlowScope.managedBean.countryIdVC}">
    public void countryIdVC(ValueChangeEvent valueChangeEvent) {
        // Add event code here...
        String oldValue=null;
          setEL("#{bindings.CountryId.inputValue}", valueChangeEvent.getOldValue());
          if(evaluateEL("#{bindings.CountryId.attributeValue}")!=null)
         oldValue =evaluateEL("#{bindings.CountryId.attributeValue}").toString();
                setEL("#{bindings.CountryId.inputValue}", valueChangeEvent.getNewValue());
        String newValue=evaluateEL("#{bindings.CountryId.attributeValue}").toString();
        BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
         DCIteratorBinding dciter = (DCIteratorBinding) bindings.get("ViewObj1Iterator");
         //access the underlying RowSetIterator
         RowSetIterator rsi = dciter.getRowSetIterator();
      boolean duplicate=true;
      if(oldValue!=null){
                rsi.getCurrentRow().setAttribute("CountryId", oldValue);
    // Row row= rsi.findByKey(new Key(new Object[] { newValue}), 1)[0];
      Key key =new Key(new Object[] { newValue});
      Row row=rsi.getRow(key);
      if(row==null){
      System.err.println(duplicate);
        duplicate=false;
      }else{
        rsi.setCurrentRow(row);
         if(!duplicate){
         //get handle to the last row
         Row lastRow = rsi.last();
         //obtain the index of the last row
         int lastRowIndex = rsi.getRangeIndexOf(lastRow);
         //create a new row
         Row newRow = rsi.createRow();
         newRow.setAttribute("CountryId", newValue);
         //initialize the row
         newRow.setNewRowState(Row.STATUS_INITIALIZED);
         //add row to last index + 1 so it becomes last in the range set
         rsi.insertRowAtRangeIndex(lastRowIndex +1, newRow);
         //make row the current row so it is displayed correctly
         rsi.setCurrentRow(newRow);

I read the reply from Andrejus Baranovskis and thought of studying and implementing that in my useCase.Well it worked . I implemented the same Logic but rowIteration was done in AppModule.
Con-Fusion, Bugs, Facts &amp; Workarounds: Iterating through View Object RowIterator Bug.(NOT ADF BUG, Development B…
http://docs.oracle.com/cd/E15523_01/web.1111/b31974/bcservices.htm#sm0206
9.7.6 What You May Need to Know About Programmatic Row Set Iteration
The problem is solved ,the above links helped me solve the problem.
what i did is i have created a method in appmodule to iterate rows and all the method y operation bindings and my logic works fine ....
MY Advice to all Adf developers ,though i am not an expert but i can assure you to follow the above process for rowIteration.If you use the iterator binding in the manage bean to navigate the rows u'll face issues which are unexpected.
In AppModule :::::
    public boolean createRow(String oldValue,String newValue){
     System.err.println(oldValue+""+newValue);
      ViewObjectImpl vo=getViewObj1();
      boolean duplicate=false;
      if(oldValue!=null){
      RowSetIterator iter = vo.createRowSetIterator(null);
      System.err.println("iterating rows ");
         while (iter.hasNext()) {
             Row r = iter.next();
             System.err.println(iter.getRangeIndexOf(r)+" row is "+r.getAttribute("CountryId"));
             if(r.getAttribute("CountryId").toString().equals(newValue)){
                 duplicate=true;
                 break;
             // Do something with the current row.
         // close secondary row set iterator
         iter.closeRowSetIterator();
      return duplicate;
In ManageBean :::::
    public void countryIdVC(ValueChangeEvent valueChangeEvent) {
        // Add event code here...
        String oldValue=null;
       System.err.println("Old Value"+valueChangeEvent.getOldValue());
          setEL("#{bindings.CountryId.inputValue}", valueChangeEvent.getOldValue());
          if(evaluateEL("#{bindings.CountryId.attributeValue}")!=null)
         oldValue =evaluateEL("#{bindings.CountryId.attributeValue}").toString();
                setEL("#{bindings.CountryId.inputValue}", valueChangeEvent.getNewValue());
        String newValue=evaluateEL("#{bindings.CountryId.attributeValue}").toString();
        BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
         //access the name of the iterator the table is bound to. Its "allDepartmentsIterator"
         //in this sample
         DCIteratorBinding dciter = (DCIteratorBinding) bindings.get("ViewObj1Iterator");
         //access the underlying RowSetIterator
         RowSetIterator rsi = dciter.getRowSetIterator();
         if(oldValue!=null){
                      rsi.getCurrentRow().setAttribute("CountryId", oldValue);
           OperationBinding operation = bindings.getOperationBinding("createRow");
           operation.getParamsMap().put("oldValue", oldValue);
           operation.getParamsMap().put("newValue", newValue);
      if(!(Boolean)operation.execute()){
      //get handle to the last row
      Row lastRow = rsi.last();
      //obtain the index of the last row
      int lastRowIndex = rsi.getRangeIndexOf(lastRow);
      //create a new row
      Row newRow = rsi.createRow();
      newRow.setAttribute("CountryId", newValue);
      //initialize the row
      newRow.setNewRowState(Row.STATUS_INITIALIZED);
      //add row to last index + 1 so it becomes last in the range set
      System.err.println("Inserting row at index "+lastRowIndex+1);
      rsi.insertRowAtRangeIndex(lastRowIndex +1, newRow);
      //make row the current row so it is displayed correctly
      rsi.setCurrentRow(newRow);
      else{
        System.err.println("Data found So not inserting,only setting current Row");
      Key key =new Key(new Object[] { newValue});
        rsi.setCurrentRow(rsi.getRow(key));

Need help with my graphic calculator!!!

Hello everybody!! I need help with my little program I made.... The problem is that I am unable to use to calculate but it is possible to compile the code!! What should I do?? Thanks in advance.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Aritmetik extends JFrame implements ActionListener{
     private JLabel l1 = new JLabel("Tal1: ", JLabel.LEFT);
     private JLabel l2 = new JLabel("Tal2: ", JLabel.LEFT);
     private JLabel l3 = new JLabel("Resultat",JLabel.LEFT);
     private JLabel l4 = new JLabel(" ", JLabel.RIGHT);
     private JTextField t1 = new JTextField(" ",10);
     private JTextField t2 = new JTextField(" ",10);
     private JButton b1 = new JButton("+");
     private JButton b2 = new JButton("-");
     private JButton b3 = new JButton("*");
     private JButton b4 = new JButton("/");
     public Aritmetik(){
          Container v = getContentPane();
          v.setLayout(new GridLayout(5,2));
          v.add(l1);
          v.add(t1);
          v.add(l2);
          v.add(t2);
          v.add(b1);
          v.add(b2);
          v.add(b3);
          v.add(b4);
          v.add(l3);
          v.add(l4);
          b1.addActionListener(this);
          b2.addActionListener(this);
          b3.addActionListener(this);
          b4.addActionListener(this);
          pack();
          setVisible(true);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
     public void actionPerformed(ActionEvent e){
          int tal1 = Integer.parseInt(t1.getText());
          int tal2 = Integer.parseInt(t2.getText());
               if(e.getSource() == b1){
          if(t1.getText().equals("") || t2.getText().equals(""))
                                   JOptionPane.showMessageDialog(null, "Mata in tal!");
               else{
                    l3.setText("Resultat ");
               l4.setText(" " + (tal1+tal2));
               else if(e.getSource() == b2){
                    int sub = tal1-tal2;
                    l4.setText(" " + (sub));
               else if(e.getSource() == b3){
                    int multi = tal1*tal2;
                    l4.setText(" " + (multi));
               else if(e.getSource() == b4){
                    int div = tal1/tal2;
                    l4.setText(" " + (div));
               public static void main(String[] arg){
               Aritmetik A =new Aritmetik();

Here is your problem:
public void actionPerformed(ActionEvent e){
int tal1 = Integer.parseInt(t1.getText().trim()); // add the trim()
int tal2 = Integer.parseInt(t2.getText().trim()); // add the trim()
if(e.getSource() == b1){
    if(t1.getText().equals("") || t2.getText().equals(""))
      JOptionPane.showMessageDialog(null, "Mata in tal!");
    else{
      l3.setText("Resultat ");
      l4.setText(" " + (tal1+tal2));
}... Better ...
public void actionPerformed(ActionEvent e) throws NumberFormatException {
String tala = t1.getText().trim();
String talb = t2.getText().trim();
if ( tala == null || "".equals(tala) || talb == null || "".equals(talb) ) {
    JOptionPane.showMessageDialog(null, "Mata in tal!");
    return();
int tal1 = Integer.parseInt(tala);
int tal2 = Integer.parseInt(talb);
if(e.getSource() == b1){
    l3.setText("Resultat ");
    l4.setText(" " + (tal1+tal2));
else if(e.getSource() == b2){
    int sub = tal1-tal2;
    l4.setText(" " + (sub));
else if(e.getSource() == b3){
    int multi = tal1*tal2;
    l4.setText(" " + (multi));
else if(e.getSource() == b4){
    int div = tal1/tal2;
    l4.setText(" " + (div));
}Message was edited by:
abillconsl

Need Help with a getText method

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