Need help detecting data changes in my jTable
I have created a jTable and a corresponding TableModel that extends the AbstractTableModel.
In my TableModel, I call fireTableCellUpdated within setValueAt.
I want to be able to say "if jTable has been edited then do something".
How do I do this? Do I have to implement an action listener? If I do then where do I implement that?
I've read the tutorial and the help several times but the tutorial is just a brief overview and does not go into what to do when you have extended the AbstractTableModel.
TIA,
Jennifer
Message was edited by:
jmc95825
I'm pretty much a novice to Java programming so I don't know why I'm using a custom table model. I'm just following my predecessor. My app has to be able to edit a .dbf file so I thought the table model has to be able to read the headers.
I've tried the code from the link you referenced and things are working great now.
Thanks again!
Similar Messages
-
JTabel, detecting data changes
Hi,
I am new to the JTable component... I have set up a JTabel which displays some sample information. I have to display results I get from one of my methods... There is the Swing/JTable tutorial at http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#modelchange ("Detecting Data Changes"), however, the necessary code has been removed from the tutorial! I hope you can help me...
I have set up the following table:
public class InfoDialog extends JDialog {
String[] columnNames = {"Type", "Value"};
Object[][] data = {
{"Angle", "90"},
{"Speed", "50"},
public InfoDialog() {
Container cp = this.getContentPane();
setLayout(new BoxLayout(cp, BoxLayout.PAGE_AXIS));
JTable table = new JTable(data, columnNames);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
JPanel tablePanel = new JPanel();
tablePanel.setLayout(new BorderLayout());
tablePanel.add(table.getTableHeader(), BorderLayout.PAGE_START);
tablePanel.add(table, BorderLayout.CENTER);
(...)From one of my other classes, GameStart, one of the methods, calculateAngle, returns the measured angle. I would like to display this result in the appropriate cell.
In the Swing tutorial I just can read "You can see the code for that method in [PENDING: The Bingo example has been removed.]"
So I am a little bit confused. I think I have to first extend AbstractTableModel, then I have something to do with fireTableCellUpdated... Can you maybe show me a working example or is this "Bingo example" from the Swing available elsewhere?
Thanks for your help!so I can't extend AbstractTableModel... Why are you trying to do this?I first followed the example given by Sunan.N (reply #6).
Here is a complete working example:
http://forum.java.sun.com/thread.jspa?forumID=57&threa
dID=566133Thanks for this example. As a newbie I still have one problem: how can I set the a new value? I use the table.getModel().setValueAt(...) method... but which code goes into the tableChanged method and which into the setValueAt method?
Here is my code:
public class InfoDialog extends JDialog implements TableModelListener {
private static final long serialVersionUID = 1L;
public JTable table;
String[] columnNames = {"Type", "Value"};
Object[][] data = {
{"Angle", "90"},
{"Speed", "50"},
public InfoDialog {
Container cp = this.getContentPane();
setLayout(new BoxLayout(cp, BoxLayout.PAGE_AXIS));
Dimension dim_topPanel = new Dimension(300, 150);
JPanel topPanel = new JPanel();
topPanel.setPreferredSize(dim_topPanel);
topPanel.setBackground(Color.YELLOW);
DefaultTableModel model = new DefaultTableModel(rowData, columnNames);
model.addTableModelListener(this);
table = new JTable(model);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JPanel tablePanel = new JPanel();
tablePanel.setLayout(new BorderLayout());
tablePanel.add(table.getTableHeader(), BorderLayout.PAGE_START);
tablePanel.add(table, BorderLayout.CENTER);
cp.add(topPanel);
cp.add(tablePanel);
setDefaultLookAndFeelDecorated(false);
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception e) {
e.printStackTrace();
setResizable(false);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
pack();
setLocationRelativeTo(null);
setVisible(true);
public void tableChanged(TableModelEvent e) {
System.out.println("Table change");
public void setValueAt(Object aValue, int row, int column) {
}What do I have to do to change, e.g., "Speed" from 50 to 60? I call the setValueAt method like this: table.getModel().setValueAt(60, 2, 2); but what do I have to write into my setValueAt method? I thought that my table will automatically change the value when calling the setValueAt method...?
The tableChanged method is being called when a value in my table changes... OK, but what should I do with this method? I just would like to set a new value...
:confused: -
Need help On Triggers/Change pointers in SAP
Hi Experts,
I Need help On Triggers/Change pointers in SAP.
I have a requirement as soon as an entry is created in one of the Standard SAP table it should check against my Ztable and update and create the corresponding entry in another Ztable.
Can some one help me out on this with the syntax and how to do itHi,
Check whether you have any enhancement option (BADI, user exit, Customer enhancement etc) in the program which is used to save the data in the SAP standard table. If so, then try to write your code in that appropriate enhancement. -
I am printing a calendar and certain events will be helds on certain dates.
One can edit the event if it has not passed the date. Events in the past can be viewed but not edited.
When I query the database the date must be formatted dd-MMM-yy
I am able to get today's date by doing this:
java.util.Date today = new java.util.Date();
String formatString = "dd-MMM-yy";
SimpleDateFormat sdf = new SimpleDateFormat(formatString);
String today_str = sdf.format(today);
My code for printing the calendar: I left out some of the table formatting in the JSP page.
GregorianCalendar d = new GregorianCalendar();
int today = d.get(Calendar.DAY_OF_MONTH);
int month = d.get(Calendar.MONTH);
d.set(Calendar.DAY_OF_MONTH,1);
int weekday = d.get(Calendar.DAY_OF_WEEK);
for(int i = Calendar.SUNDAY; i < weekday; i++)
out.print("<td> </td>");
do {
int day = d.get(Calendar.DAY_OF_MONTH);
out.print("<td>" + day + "</td>");
String formatString = "dd-MMM-yy";
SimpleDateFormat sdf = new SimpleDateFormat(formatString);
//if(event exists on this day
// Get results
// print link for viewing
// if (after today) print link for edit
if(weekday == Calendar.SATURDAY)
out.println("</tr><tr valign=top>");
d.add(Calendar.DAY_OF_MONTH,1);
weekday = d.get(Calendar.DAY_OF_WEEK);
} while(d.get(Calendar.MONTH) == month);
if(weekday != Calendar.SUNDAY)
System.out.println();
The part I need help on is this:
//if(event exists on this day
// Get results
// print link for viewing
// if (after today) print link for edit
I'm looping through each day of the month to print the days. I have the month, day, year as integers. How can I create a date object out of that and compare it to today's date to test if it's before or after today???
All the function in the Date class that I think would do this have been deprecated.Need Help with Dates
Here is some information about dates:
There are many edible palm fruits, and one of the most widespread and favored of these is the data (Phoenix dactylifera). Dates were cultivated in ancient land from Mesopotamia to prehistoric Egypt, possibly as early as 6000 B.C. Then--as now--dates were a staple for the natives of those dry regions. Much later, Arabs spread dates around northern Africa, and dates were introduced into California by the Spaniards in 1765, around Mission San Ignacio.
The date prefers dry, hot climates, because date fruits are injured at temperatures of 20 degrees F, and the damp climate of the California coast was not favorable for fruit production. In the mid-1800s, the date industry developed in California's hot interior valleys and in Arizona. Now the date industry in the United States is localized mostly in the Coachella Valley, where the sandy soils permit the plants to be deeply irrigated. Today the new varieties, mostly introduced in this century, produce about 40 million pounds of dates per annum, or over 60% of the dates consumed in this country. The rest are imported mainly from Persia. According to one survey, about one million people are engaged entirely in date palm cultivation worldwide.
Hope that helps. -
I Need help. I Change My Number and now imessage don t work.
I Need help. I Change My Number and now imessage don t work.
Hi Ivonka88,
Here are some steps to try troubleshooting your issue with, depending on your specific symptoms:
iOS: Troubleshooting FaceTime and iMessage activation
http://support.apple.com/kb/ts4268
iOS: Troubleshooting Messages
http://support.apple.com/kb/ts2755
Cheers!
- Ari -
Need help in date Validation Urgent
Hi ,
We need help in Date Validation.
we have 2 Date fields on the form Start Date, End Date
The requirement is: End Date (May not be greater than 30 years from the start date).
I have written following script on End Date Exit event. But the problem is its calculating 30 years from the Current Date not from the Start Date
var tDate = util.scand("mm/dd/yyyy", new Date());
var M = tDate.getMonth();
var D = tDate.getDate();
var Y = tDate.getFullYear();
var SRes = util.printd("yyyy-mm-dd", new Date((Y+30), M,D) );
//app.alert(SRes)if (SRes <= this.rawValue){
app.alert("May not be greater than 30 years from the start date")
xfa.host.setFocus(
this);}
can someone please help me
Regards,
JayHi,
You'll need to get javascript date from LCD field, and calculate & compare with the future date in javascript date.
try following script;
var sDate = StartDate.rawValue;
var wkStartDate = util.scand("yyyy-mm-dd", sDate);
var nYear = wkStartDate.getFullYear();
var nMonth = wkStartDate.getMonth();
var nDay = wkStartDate.getDate();
var wkFutureDate = new Date(nYear + 30 , nMonth, nDay);
sDate = EndDate.rawValue;
var wkEndDate = util.scand("yyyy-mm-dd", sDate);
if (wkEndDate.getTime() > wkFutureDate.getTime()){
xfa.host.messageBox("May not be greater than 30 years from the start date");
xfa.host.setFocus(this); -
Need help with date range searches for Table Sources in SES
Hi all,
I need help, please. I am trying to satisfy a Level 1 client requirement for the ability to search for records in crawled table sources by a date and/or date range. I have performed the following steps, and did not get accurate results from Advanced searching for date. Please help me understand what I am doing wrong, and/or if there is a way to define a date search attribute without creating a LOV for a date column. (My tables have 500,00 rows.)
I am using SES 10.1.8.3 on Windows 32.
My Oracle 10g Spatial Table is called REPORTS and this table has the following columns:
TRACKNUM Varchar2
TITLE Varchar2
SUMMARY CLOB
SYMBOLCODE Varchar2
Timestamp Date
OBSDATE Date
GEOM SDO_GEOMETRY
I set up the REPORTS table source in SES, using TRACKNUM as the Primary Key (unique and not null), and SUMMARY as the CONTENT Column. In the Table Column Mappings I defined TITLE as String and TITLE.
Under Global Settings > Search Attributes I defined a new Search Attribute (type Date) called DATE OCCURRED (DD-MON-YY).
Went back to REPORTS source previously defined and added a new Table Column Mapping - mapping OBSDATE to the newly defined DATE OCCURRED (DD-MON-YY) search attribute.
I then modified the Schedule for the REPORTS source Crawler Policy to “Process All Documents”.
Schedule crawls and indexes entire REPORTS table.
In SES Advanced Search page, I enter my search keyword, select Specific Source Group as REPORTS, select All Match, and used the pick list to select the DATE OCCURRED (DD-MON-YY) Attribute Name, operator of Greater than equal, and entered the Value 01-JAN-07. Then the second attribute name of DATE_OCCURRED (DD-MON-YY), less than equals, 10-JAN-07.
Search results gave me 38,000 documents, and the first 25 I looked at had dates NOT within the 01-JAN-07 / 10-JAN-07 range. (e.g. OBSDATE= 10-MAR-07, 22-SEP-07, 02-FEB-08, etc.)
And, none of the results I opened had ANY dates within the SUMMARY CLOB…in case that’s what was being found in the search.
Can someone help me figure out how to allow my client to search for specific dated records in a db table using a single column for the date? This is a major requirement and they are anxiously awaiting my solution.
Thanks very much, in advance….raford,
Thanks very much for your reply. However, from what I've read in the SES Admin Document is that (I think) the date format DD/MM/YYYY pertains only to searches on "file system" sources (e.g. Word, Excel, Powerpoint, PDF, etc.). We have 3 file system sources among our 25 total sources. The remaining 22 sources are all TABLE or DATABASE sources. The DBA here has done a great job getting the data standardized using the typical/default Oracle DATE type format in our TABLE sources (DD-MON-YY). Our tables have anywhere from 1500 rows to 2 million rows.
I tested your theory that the dates we are entering are being changed to Strings behind the scenes and on the Advanced Page, searched for results using OBSDATE equals 01/02/2007 in an attempt to find data that I know for certain to be in the mapped OBSDATE table column as 01-FEB-07. My result set contained data that had an OBSDATE of 03-MAR-07 and none containing 01-FEB-07.
Here is the big issue...in order for my client to fulfill his primary mission, one of the top 5 requirements is that he/she be able to find specific table rows that are contain a specific date or range of dates.
thanks very much! -
I need help restoring data from my time machine.
1) On the time machine, where do I find the TRASH file that is located on the dock in my desktop? I'd like to restore that to a prior date but can't find it.
2) I DID A VERY BAD THING & need help to get back to where I was before. I wanted to delete files that were taking up lots of space. My OTHER section was using 160G. I downloaded OmniDiskSweep and found that 120G was being used by my virtual machine (I run Quicken in Windows, through VMware). I started to delete files that were called Snapshots assuming these were the snapshots that the program regularly takes of my files. Apparently they were not. I also deleted the program Windows XP Professional because that was never used. When I try to open VM or quicken program, it says it is missing a particular snapshot, i.e. Snapshot 11104. I deleted about 20 of these. I left all the other files that said Windows XP Home Edition. But now it shows that I only have the Professional Edition, even though that's what I deleted. I'm trying to restore from Time Machine and it looks like the information is not there - I've tried various different backups and nothing seems to have the information I need. The earliest back up I have is from 5/7 when I started time machine on a new external 1TB HD. Would that have the information I need since it's the very first back up? Please Help.I am assuming it's real data because it's taking up storage on my HD. It falls in the category "other" and the total of this section is 160G. Here is a snapshot of the virtual machine.
I also took a shot of the VM snapshots & it tells how much space is being taken up by the snapshots.
I've now changed the number of snapshots taken down to 12 (didn't know I had this option) & I can delete alot of the 21 snapshots that have already been saved. I have no idea how much of the HD was set aside for the VM because someone else installed it for me 5 years ago. I've had enough problems with it over the years that I've wanted to switch to Quicken for Mac or find another financial program to use. I've upgraded the VM 2x over the years, but didn't want to spend $100 for Version 5. I understand the concept of a VM but that's about all.
I did do the disk cleanup in Windows on the C drive. I deleted 700 MB of temporary files and then compressed 4G of data down to 2G. While the cleanup was progressing it said that the C drive was 30.99G and 78% of it was free. That just doesn't make sense to me. It recommended a defrag, so I did that also.
I'm pretty sure it's real data because I recently had to switch from a 320G external HD for TM, to a 1T HD. One TM backup was over 300G which I found to be excessive because I basically use my computer for mail, some word processing, and my financial data.
Thanks again for all your help. I really appreciate it. -
Need Help with data type conversion
Hello People,
I am new to java, i need some help with data type conversion:
I have variable(string) storing IP Address
IPAddr="10.10.103.10"
I have to call a library function which passes IP Address and does something and returns me a value.
The problem I have is that external function call in this library excepts IP Address in form of a byte array.
Here is the syntax for the function I am calling through my program
int createDevice (byte[] ipAddress).
now my problem is I don't know how to convert the string IPAddr variable into a byte[] ipAddress to pass it through method.Class InetAddress has a method
byte[] getAddress() You can create an instance using the static method getByName() providing the IP address string as argument. -
Need Help:Reading Data from RU payroll cluster for table GRREC
Hi...
I need help on how to read data from RU cluster table for table GRREC for the employee & run date and get the value from structure PC292 .
Please let me know about the includes and the import and export statements to be used.
Thanks in advance,
RAVI.Hi,
Here goes pseudocode
Includes:
include: rpppxd00 ,
rpppxd10 ,
rpc2cd09 ,
rpc2rx02_ce , "if ldb pnp_ce is used else use the same include with out _ce
rpc2rx29 ,
rpc2rx39 ,
rpppxm00 ,
rpc2ruu0_ce ,
Declare:
DATA : i_rgdir LIKE pc261 OCCURS 0 WITH HEADER LINE ,
i_result TYPE pay99_result OCCURS 0 WITH HEADER LINE ,
i_grrec LIKE pc292 OCCURS 0 WITH HEADER LINE .
start-of-selection:
GET pernr.
Get the RGDIR VALUE for the current PERNR & selected Molga
get rgdir data TABLES i_rgdir
USING pernr-pernr
p_molga " parameter
CD-KEY-PERNR = PERNR-PERNR.
RP-IMP-C2-CU.
i_rgdir [] = rgdir[].
LOOP AT i_rgdir WHERE fpbeg LE pn-endda
AND fpend GE pn-begda
AND srtza EQ 'A'
AND void NE 'V'.
get_result_tabs TABLES i_result
USING 'RU' " US cluster
pernr-pernr
i_rgdir-seqnr
RX-KEY-PERNR = PERNR-PERNR.
UNPACK i_RGDIR-SEQNR TO RX-KEY-SEQNO.
RP-IMP-C2-RU.
i_grrec[] = i_result-inter-grrec[].
LOOP AT i_grrec.
case i_grrec.
use wage types required here and pass the data to output table.
endcase.
endloop.
endloop
end-of-selction. -
Hi,
I need to print date in the following format:
Jan 21, 2007
11:23 AM 21/01/2007
21-01-2007 18:23
Now as per condition of assignment the year, month, day and hour, min, sec all are entered as separate integer values.
my code:
import java.util.*;
import java.text.*;
public class stringToDate
// Integer value of date and time variables
int day=21;
int month = 1;
int year=07;
int hour=18;
int min=23;
int sec=14;
// Converting integer value into date
public void convertIntoDate()
String strTmp= day+"/"+month+"/"+year+" "+hour+":"+min+":"+sec;
System.out.println("String: " + strTmp);
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
try
Date outDate = dateFormat.parse(strTmp);
System.out.println("Converted: " + dateFormat.format(outDate));
catch(Exception e){ System.out.println("Exception: " + e);}
public static void main(String args[]) {
stringToDate dF = new stringToDate();
dF.convertIntoDate();
}Now as per my code i am able to print in the following format:
String: 21/1/7 18:23:14
Converted: 21/01/0007 18:23:14
But if i try to print in other formats it gives me following error message:
Exception: java.text.ParseException: Unparseable date: "21/1/07"
Please help me....vinee wrote:
Hi,
I tried different output format but still i'm facing the same issue
Following the complete code and error message....
import java.util.*;
import java.text.*;
public class stringToDate
// Integer value of date and time variables
int day=21;
int month = 1;
int year=07;
int hour=18;
int min=23;
int sec=14;
// Converting integer value into date
public void convertIntoDate()
DateFormat dateFormat;
Date outDate=null;
String strTmp= day+"/"+month+"/"+year+" "+hour+":"+min+":"+sec;
System.out.println("Entered string for date: " + strTmp);
// Format 01/01/0070 15:24:14
dateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
try
outDate = dateFormat.parse(strTmp);
System.out.println("Converted into Date(dd/MM/yyyy HH:mm:ss): " + dateFormat.format(outDate));
catch(Exception e){ System.out.println("Exception in format 1: " + e);}
// Format Jan 21, 2007
dateFormat = new SimpleDateFormat("EEE, MMM d, ''yyyy");
try
outDate = dateFormat.parse(strTmp);
System.out.println("Converted into Date(EEE, MMM d, ''yyyy): " + dateFormat.format(outDate));
catch(Exception fe)
{System.out.println("Exception in format 2: " + fe);}
public static void main(String args[]) {
stringToDate dF = new stringToDate();
dF.convertIntoDate();
}Following is the error message:
Entered string for date: 21/1/7 18:23:14
Converted into Date(dd/MM/yyyy HH:mm:ss): 21/01/0007 18:23:14
Exception in format 2: java.text.ParseException: Unparseable date: "21/1/7 18:23:14"
Now as per the above error message format one is working fine but format 2(// Format Jan 21, 2007) have some issues...kind suggest.
Edited by: vinee on Oct 2, 2008 4:23 AMPlease re-read my last reply.
Once again : see [http://java.sun.com/docs/books/tutorial/i18n/format/simpleDateFormat.html]
And your:
int year=07; // should be:
int year=2007; -
Need help pulling data from an outside file into my array. Please help =)
Hi,
I need help adapting my array to read the interest rates from an outside file. Here is my code and the outside file I wrote. Please help. Oh, the array in question is on line 259, inside of my calculation() method.
Thanks...
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat;
import java.text.DecimalFormat;
import java.io.*;
import javax.swing.JOptionPane;
public class Workshop5 extends JFrame implements ActionListener
//declare gui components
//declare labels
JPanel contentPane = new JPanel();
JPanel graphPane = new JPanel();
JLabel instructionLabel = new JLabel();
JLabel amountLabel = new JLabel();
JLabel orLabel = new JLabel();
JLabel comboBoxLabel = new JLabel();
JLabel termLabel = new JLabel();
JLabel rateLabel = new JLabel();
JLabel calcLabel = new JLabel();
JLabel paymentLabel = new JLabel();
JLabel tableLabel = new JLabel();
//declare font object
Font labelFont = new Font("Tahoma", Font.PLAIN, 16);
//declare text fields
JTextField amountField = new JTextField(20);
JTextField termField = new JTextField(20);
JTextField rateField = new JTextField(20);
JTextField paymentField= new JTextField(20);
//declare combo box for loan selection
JComboBox comboBox = new JComboBox();
//declare button group and radio buttons
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton enterRadioButton = new JRadioButton("Enter amount, term, & rate", true);
JRadioButton selectRadioButton = new JRadioButton("Select a preset term/rate loan", false);
//declare button objects
JButton clearButton = new JButton();
JButton calcButton = new JButton();
JButton quitButton = new JButton();
//declare text area for amortization
JTextArea amortTextArea = new JTextArea();
JTextArea testTextArea = new JTextArea();
//declare scroll bar for amortization table
JScrollPane scrollPane = new JScrollPane(amortTextArea,ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
public Workshop5()
instructionLabel.setText("Choose one of the following payment calculation options:");
instructionLabel.setFont(new Font("Tahoma",Font.PLAIN,16));
//adds both buttons to button group
buttonGroup.add(enterRadioButton);
buttonGroup.add(selectRadioButton);
enterRadioButton.setFont(labelFont);
enterRadioButton.setBackground(Color.WHITE);
enterRadioButton.setContentAreaFilled(false);
enterRadioButton.addActionListener(this); //adds action listener to enter radio button
orLabel.setText("OR");
orLabel.setFont(new Font("Tahoma",Font.BOLD,18));
selectRadioButton.setFont(labelFont);
selectRadioButton.setBackground(Color.WHITE);
selectRadioButton.setContentAreaFilled(false);
selectRadioButton.addActionListener(this); //adds action listener to select radio button
amountLabel.setText("Enter mortgage amount");
amountLabel.setFont(new Font("Tahoma", Font.PLAIN,16));
amountField.requestFocusInWindow();
termLabel.setText("Enter term length in years:");
termLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
rateLabel.setText("Enter interest rate:");
rateLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBoxLabel.setText("Select a loan:");
comboBoxLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBox.setBackground(new Color(255,255,255));
comboBox.setFont(new Font("Tahoma", Font.PLAIN, 14));
comboBox.setEnabled(false);
ComboBox();
calcLabel.setText("Press Calculate button to determine monthly payment.");
calcLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
calcButton.setText("Calculate");
calcButton.setFont(new Font("Tahoma", Font.BOLD, 14));
calcButton.addActionListener(this);
//define monthly payment label
paymentLabel.setText("Monthly payment:");
paymentLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
//define monthly payment text field
paymentField.setFont(new Font("Tahoma", Font.BOLD,16));
paymentField.setBackground(new Color(255,255,255));
paymentField.setEditable(false);
//define clear button
clearButton.setText("Clear");
clearButton.setFont(new Font("Tahoma", Font.BOLD,14));
clearButton.addActionListener(this);
//define quit button
quitButton.setText("Quit");
quitButton.setFont(new Font("Tahoma", Font.BOLD,14));
quitButton.addActionListener(this);
tableLabel.setText("Amoritization Table");
tableLabel.setFont(new Font("Tahoma", Font.BOLD, 16));
graphPane.setBackground(Color.WHITE);
//add components to content
getContentPane().add(contentPane);
contentPane.setLayout(null);
addComponent(contentPane, instructionLabel, 80,10,450,26);
addComponent(contentPane, enterRadioButton, 30,40,220,30);
addComponent(contentPane, orLabel, 280,40,100,30);
addComponent(contentPane, selectRadioButton, 335,40,350,30);
addComponent(contentPane, amountLabel, 100,80,220,26);
addComponent(contentPane, amountField, 300,80,150,26);
addComponent(contentPane, termLabel, 15,125,200,30);
addComponent(contentPane, termField, 195,125,125,30);
addComponent(contentPane, rateLabel, 62,160,200,30);
addComponent(contentPane, rateField, 195,165,125,30);
addComponent(contentPane, comboBoxLabel, 400,125,200,26);
addComponent(contentPane, comboBox, 400,155,150,30);
addComponent(contentPane, calcLabel, 100,200,400,30);
addComponent(contentPane, calcButton, 250,240,100,30);
addComponent(contentPane, paymentLabel, 150,285,200,30);
addComponent(contentPane, paymentField, 300,285,100,30);
addComponent(contentPane, clearButton, 100,330,100,30);
addComponent(contentPane, quitButton, 400,330,100,30);
addComponent(contentPane, tableLabel, 200,370,300,26);
addComponent(contentPane, scrollPane, 10,400,450,360);
addComponent(contentPane, graphPane, 475,400,305,360);
//add window listener to close window when user presses X
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
pack();
//method to add components
private void addComponent(Container container, Component c, int x, int y, int width, int height)
c.setBounds(x, y, width, height);
container.add(c);
//action performed method
public void actionPerformed(ActionEvent event)
Object source = event.getSource();
if (source == calcButton)
Calculate();
if (source == clearButton)
Clear();
if (source == quitButton)
Exit();
//defines active area based on user selection of mortgage calculation method
//if user chooses to enter the mortgage manually, combo box fields are inactive
if (source == enterRadioButton)
comboBox.setEnabled(false);
termField.setEnabled(true);
termField.setEditable(true);
rateField.setEnabled(true);
rateField.setEditable(true);
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
//if user chooses to select from a preset mortgage, rate and term fields are inactive
if (source == selectRadioButton)
comboBox.setEnabled(true);
termField.setEnabled(false);
termField.setEditable(false);
rateField.setEnabled(false);
rateField.setEditable(false);
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of action performed method
//combo box method
public void ComboBox()
String[] LoanArray = {" 7 years at 5.35 %", " 15 years at 5.50 %", " 30 years at 5.75 %"};
for (int i = 0; i < LoanArray.length; i++)
comboBox.addItem(LoanArray);
}//end combo box method
//calculation method
void Calculate()
//resets fields
paymentField.setText("");
amortTextArea.setText("");
//calculation variables
NumberFormat currency = NumberFormat.getCurrencyInstance();
int [] termArray = {7, 15, 30}; //array of years
double [] yearlyInterestArray = {5.35, 5.5, 5.75}; //array of interest
int totalMonths = 0; //total months
double Loan = 0.0; //amount of loan
double MonthlyInterest = 0.0; //monthly interest rate
double Payment = 0.0; //calculate payment
double monthlyPayment = 0.0; //calculate monthly payment
double Interest = 0.0; //variable for Interest Array input
int Term = 0; //variable for Term Array input
double NewMonthlyInterest = 0.0; //new interest amount
double NewLoan = 0.0; //new loan amount
double Reduction = 0.0; //principle reduction
//validate input
try
Loan = Double.parseDouble(amountField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid Entry. Please enter valid loan amount.", "Error", JOptionPane.WARNING_MESSAGE);
//resets input fields after error message
amountField.setText("");
amountField.requestFocusInWindow();
//if select button is chosen
if (selectRadioButton.isSelected())
int index = comboBox.getSelectedIndex();
Term = termArray[index];
Interest = yearlyInterestArray[index];
//if user chooses to enter mortgage information
else
if (enterRadioButton.isSelected())
//validates input
try
Term = Integer.parseInt(termField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid term length in years.", "Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
termField.setText("");
termField.requestFocusInWindow();
try
Interest = Double.parseDouble(rateField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid rate (without percent symbol).","Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
rateField.setText("");
rateField.requestFocusInWindow();
//perform calculations
if (Loan > 0)
Loan = Double.parseDouble(amountField.getText());
MonthlyInterest = (Interest / 12)/100;
totalMonths = Term * 12;
monthlyPayment = Loan * MonthlyInterest *(Math.pow((1 + MonthlyInterest), totalMonths)/(Math.pow((1 + MonthlyInterest), totalMonths)-1));
paymentField.setText("" + currency.format(monthlyPayment));
//send information to amortization text area
amortTextArea.append("Number\t");
amortTextArea.append(" Amount\t");
amortTextArea.append("Interest\t");
amortTextArea.append("Principle\t");
amortTextArea.append("Balance\n");
NewLoan = Loan;
for (int i = 1; i <= totalMonths; i++)
NewMonthlyInterest = MonthlyInterest * NewLoan;
Reduction = monthlyPayment - NewMonthlyInterest;
NewLoan = NewLoan - Reduction;
amortTextArea.append(" " + i +"\t");
amortTextArea.append(" " + currency.format(monthlyPayment) + "\t");
amortTextArea.append(" " + currency.format(NewMonthlyInterest)+ "\t");
amortTextArea.append(" " + currency.format(Reduction) + "\t");
amortTextArea.append(" " + currency.format(NewLoan) + "\n");
//resets fields if loan amount is less than zero
if((Loan <= 0 || Term <= 0 || Interest <= 0))
paymentField.setText("");
amortTextArea.setText("");
}//end calcualtion method
//clear method
void Clear()
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of clear method
//main method
public static void main(String args[])
Workshop5 f = new Workshop5();
f.setTitle("Carol's Mortgage Calculator");
f.setBounds(200,100,800,800);
f.setResizable(false);
f.setVisible(true);
}//end of main method
//exit method
void Exit()
System.exit(0);
}//end of exit method
}//program end
My data file is called: "InterestData.dat" and only contains the following text:
5.35, 5.5, 5.75Ok, now I am getting this error message:
cannot resolve symbol method lenght()
Please help me out here, this is due tomorrow and I've been killing myself on it...
attaching program with revised code included, see beginning of calculation method line 250:
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.* ;
import java.text.NumberFormat;
import java.text.DecimalFormat;
import java.io.*;
import javax.swing.JOptionPane;
public class Workshop5 extends JFrame implements ActionListener
//declare gui components
//declare labels
JPanel contentPane = new JPanel();
JPanel graphPane = new JPanel();
JLabel instructionLabel = new JLabel();
JLabel amountLabel = new JLabel();
JLabel orLabel = new JLabel();
JLabel comboBoxLabel = new JLabel();
JLabel termLabel = new JLabel();
JLabel rateLabel = new JLabel();
JLabel calcLabel = new JLabel();
JLabel paymentLabel = new JLabel();
JLabel tableLabel = new JLabel();
//declare font object
Font labelFont = new Font("Tahoma", Font.PLAIN, 16);
//declare text fields
JTextField amountField = new JTextField(20);
JTextField termField = new JTextField(20);
JTextField rateField = new JTextField(20);
JTextField paymentField= new JTextField(20);
//declare combo box for loan selection
JComboBox comboBox = new JComboBox();
//declare button group and radio buttons
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton enterRadioButton = new JRadioButton("Enter amount, term, & rate", true);
JRadioButton selectRadioButton = new JRadioButton("Select a preset term/rate loan", false);
//declare button objects
JButton clearButton = new JButton();
JButton calcButton = new JButton();
JButton quitButton = new JButton();
//declare text area for amortization
JTextArea amortTextArea = new JTextArea();
JTextArea testTextArea = new JTextArea();
//declare scroll bar for amortization table
JScrollPane scrollPane = new JScrollPane(amortTextArea, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
public Workshop5()
instructionLabel.setText("Choose one of the following payment calculation options:");
instructionLabel.setFont(new Font("Tahoma",Font.PLAIN,16));
//adds both buttons to button group
buttonGroup.add(enterRadioButton);
buttonGroup.add (selectRadioButton);
enterRadioButton.setFont(labelFont);
enterRadioButton.setBackground(Color.WHITE);
enterRadioButton.setContentAreaFilled(false);
enterRadioButton.addActionListener(this); //adds action listener to enter radio button
orLabel.setText("OR");
orLabel.setFont(new Font("Tahoma",Font.BOLD,18));
selectRadioButton.setFont(labelFont);
selectRadioButton.setBackground(Color.WHITE);
selectRadioButton.setContentAreaFilled(false);
selectRadioButton.addActionListener (this); //adds action listener to select radio button
amountLabel.setText("Enter mortgage amount");
amountLabel.setFont(new Font("Tahoma", Font.PLAIN,16));
amountField.requestFocusInWindow();
termLabel.setText("Enter term length in years:");
termLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
rateLabel.setText("Enter interest rate:");
rateLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBoxLabel.setText("Select a loan:");
comboBoxLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBox.setBackground(new Color(255,255,255));
comboBox.setFont(new Font("Tahoma", Font.PLAIN, 14));
comboBox.setEnabled(false);
ComboBox();
calcLabel.setText("Press Calculate button to determine monthly payment.");
calcLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
calcButton.setText("Calculate");
calcButton.setFont(new Font("Tahoma", Font.BOLD, 14));
calcButton.setBackground(new Color(202,255,112));
calcButton.addActionListener(this);
//define monthly payment label
paymentLabel.setText("Monthly payment:");
paymentLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
//define monthly payment text field
paymentField.setFont (new Font("Tahoma", Font.BOLD,16));
paymentField.setBackground(new Color(255,255,255));
paymentField.setEditable(false);
//define clear button
clearButton.setText("Clear");
clearButton.setFont(new Font("Tahoma", Font.BOLD,14));
clearButton.setBackground(new Color(202,255,112));
clearButton.addActionListener(this);
//define quit button
quitButton.setText("Quit");
quitButton.setFont(new Font("Tahoma", Font.BOLD,14));
quitButton.setBackground(new Color(202,255,112));
quitButton.addActionListener(this);
//define label for amortization table
tableLabel.setText ("Amoritization Table");
tableLabel.setFont(new Font("Tahoma", Font.BOLD, 16));
graphPane.setBackground(Color.WHITE);
//add components to content
getContentPane().add(contentPane);
contentPane.setLayout(null);
addComponent(contentPane, instructionLabel, 80,10,450,26);
addComponent(contentPane, enterRadioButton, 30,40,220,30);
addComponent(contentPane, orLabel, 280,40,100,30);
addComponent(contentPane, selectRadioButton, 335,40,350,30);
addComponent(contentPane, amountLabel, 100,80,220,26);
addComponent(contentPane, amountField, 300,80,150,26);
addComponent(contentPane, termLabel, 15,125,200,30);
addComponent(contentPane, termField, 195,125,125,30);
addComponent(contentPane, rateLabel, 62,160,200,30);
addComponent(contentPane, rateField, 195,165,125,30);
addComponent(contentPane, comboBoxLabel, 400,125,200,26);
addComponent(contentPane, comboBox, 400,155,150,30);
addComponent(contentPane, calcLabel, 100,200,400,30);
addComponent(contentPane, calcButton, 250,240,100,30);
addComponent(contentPane, paymentLabel, 150,285,200,30);
addComponent(contentPane, paymentField, 300,285,100,30);
addComponent(contentPane, clearButton, 100,330,100,30);
addComponent(contentPane, quitButton, 400,330,100,30);
addComponent(contentPane, tableLabel, 200,370,300,26);
addComponent(contentPane, scrollPane, 10,400,450,360);
addComponent(contentPane, graphPane, 475,400,305,360);
//add window listener to close window when user presses X
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
pack();
//method to add components
private void addComponent(Container container, Component c, int x, int y, int width, int height)
c.setBounds(x, y, width, height);
container.add(c);
//action performed method
public void actionPerformed(ActionEvent event)
Object source = event.getSource();
if (source == calcButton)
Calculate();
if (source == clearButton)
Clear();
if (source == quitButton)
Exit();
//defines active area based on user selection of mortgage calculation method
//if user chooses to enter the mortgage manually, combo box fields are inactive
if (source == enterRadioButton)
comboBox.setEnabled(false);
termField.setEnabled(true);
termField.setEditable(true);
rateField.setEnabled(true);
rateField.setEditable(true);
amountField.setText ("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText ("");
amortTextArea.setText("");
//if user chooses to select from a preset mortgage, rate and term fields are inactive
if (source == selectRadioButton)
comboBox.setEnabled(true);
termField.setEnabled(false);
termField.setEditable(false);
rateField.setEnabled (false);
rateField.setEditable(false);
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText ("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of action performed method
//combo box method
public void ComboBox()
String[] LoanArray = {" 7 years at 5.35 %", " 15 years at 5.50 %", " 30 years at 5.75 %"};
for (int i = 0; i < LoanArray.length; i++)
comboBox.addItem(LoanArray);
}//end combo box method
//calculation method
void Calculate()
//resets fields
paymentField.setText("");
amortTextArea.setText("");
//calculation variables
NumberFormat currency = NumberFormat.getCurrencyInstance();
//declare input stream object
InputStream istream;
//create a file object to refer to the outside file
File interestData = new File("InterestFile.dat");
//assign instream to the new file object
istream = new FileInputStream(interestData);
try
StringBuffer sb = new StringBuffer();
BufferedReader in = new BufferedReader(new FileReader(interestData));
String line = "";
while((line = in.readLine()) != null)
sb.append(line);
in.close();
String fileData = sb.toString();
String[] splitData = fileData.split(", ");
double [] yearlyInterestArray = new double[splitData.length()];
for(int j = 0; j < splitData.length(); j++)
yearlyInterestArray[j] = new Double(splitData[j]).doubleValue();
catch (IOException e)
JOptionPane.showMessageDialog(null, "File does not exist." + e.getMessage());
int [] termArray = {7, 15, 30}; //array of years
double [] yearlyInterestArray = { 5.35, 5.5, 5.75}; //array of interest
int totalMonths = 0; //total months
double Loan = 0.0; //amount of loan
double MonthlyInterest = 0.0; //monthly interest rate
double Payment = 0.0; //calculate payment
double monthlyPayment = 0.0; //calculate monthly payment
double Interest = 0.0; //variable for Interest Array input
int Term = 0; //variable for Term Array input
double NewMonthlyInterest = 0.0; //new interest amount
double NewLoan = 0.0; //new loan amount
double Reduction = 0.0; //principle reduction
//validate input
try
Loan = Double.parseDouble(amountField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid Entry. Please enter valid loan amount.", "Error", JOptionPane.WARNING_MESSAGE);
//resets input fields after error message
amountField.setText("");
amountField.requestFocusInWindow ();
//if select button is chosen
if (selectRadioButton.isSelected())
int index = comboBox.getSelectedIndex ();
Term = termArray[index];
Interest = yearlyInterestArray[index];
//if user chooses to enter mortgage information
else
if (enterRadioButton.isSelected())
//validates input
try
Term = Integer.parseInt(termField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid term length in years.", "Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
termField.setText("");
termField.requestFocusInWindow();
try
Interest = Double.parseDouble(rateField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid rate (without percent symbol).","Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
rateField.setText("");
rateField.requestFocusInWindow();
//perform calculations
if (Loan > 0)
Loan = Double.parseDouble(amountField.getText ());
MonthlyInterest = (Interest / 12)/100;
totalMonths = Term * 12;
monthlyPayment = Loan * MonthlyInterest *(Math.pow ((1 + MonthlyInterest), totalMonths)/(Math.pow((1 + MonthlyInterest), totalMonths)-1));
paymentField.setText("" + currency.format(monthlyPayment));
//send information to amortization text area
amortTextArea.append("Number\t");
amortTextArea.append(" Amount\t");
amortTextArea.append("Interest\t");
amortTextArea.append("Principle\t");
amortTextArea.append("Balance\n");
NewLoan = Loan;
for (int i = 1; i <= totalMonths; i++)
NewMonthlyInterest = MonthlyInterest * NewLoan;
Reduction = monthlyPayment - NewMonthlyInterest;
NewLoan = NewLoan - Reduction;
amortTextArea.append(" " + i +"\t");
amortTextArea.append (" " + currency.format(monthlyPayment) + "\t");
amortTextArea.append(" " + currency.format(NewMonthlyInterest)+ "\t");
amortTextArea.append(" " + currency.format(Reduction) + "\t");
amortTextArea.append(" " + currency.format(NewLoan) + "\n");
//resets fields if loan amount is less than zero
if((Loan <= 0 || Term <= 0 || Interest <= 0))
paymentField.setText("");
amortTextArea.setText("");
}//end calcualtion method
//clear method
void Clear()
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of clear method
//main method
public static void main(String args[])
Workshop5 f = new Workshop5();
f.setTitle("Carol's Mortgage Calculator");
f.setBounds(200,100,800,800);
f.setResizable(false);
f.setVisible(true);
}//end of main method
//exit method
void Exit()
System.exit(0);
}//end of exit method
}//program end -
So the yoga is a cool computer but, it lacks lots of features. I for one miss the ideapad touch button power mode feature from my old laptop.
I am remaking this program but I need help with the graphics.
This is where I am right now:
http://i43.tinypic.com/5mwgeq.png
My goal is to make a hotkey controllable program that will change mode with the key function : ALT + Spacebar
It will probably take me 20 more min to add this hotkey feature. However, I need help with the graphics. If you guys help with the graphics, I will share this program with the public.
Also, I would love suggestions and ask for your opinion. Is this something you would be intrested in?
Of course, the program will be free of charge and I might even make it open source.
***Edit***
To show you guys I am not BSing:
http://alltechtalk.net/Power_Mode_Changer.exe
To change between modes, press the LEFT ALT + Z. In the final version, the hotkey will be left alt + space bar, for now, this is a beta.The program has already been made. All I need is help with the graphics.
Attached below is a sample background and button png, in the size it needs to be.
http://www.sendspace.com/file/xmnqnw
To show you guys I am not BSing:
http://alltechtalk.net/Power_Mode_Changer.exe
To change between modes, press the LEFT ALT + Z. In the final version, the hotkey will be left alt + space bar, for now, this is a beta. -
Hello, as part of a program I need to detect modems for various platforms. On unix, this was no problem as I called the following:
Enumeration PortList =
CommPortIdentifier.getPortIdentifiers();
CommPortIdentifier Port = (CommPortIdentifier)
PortList.nextElement();
while(!Port.getName().equals("/dev/modem")){
Port = (CommPortIdentifier)
PortList.nextElement();
Thus, returning the port as a commPortIdentifier. However, I tried to implement this into windows but ran into problems. First, I couldn't find what to search for (the equivalent of /dev/modem) in windows, so I wrote a program to output all the ports, and then I would pick from one. Unforutnatley, that did not recognize any ports. Could someone please help me detect the modem port in any manner they might knwo how. All help is greatly appreciated. Thanks!Hi,
Use the enviroment variable os.name to get the operating system. Then try something like this
public static void main(String[] args) {
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
// if (portId.getName().equals("COM1")) {
if (portId.getName().equals("/dev/term/a")) {
SimpleRead reader = new SimpleRead();
}I have just cut and paste the code from the sample provided with the comm API package. You will have to add an if clause to handle both windows and unix.
Hope this helps. -
Need Help importing data using PHP to convert it into a single HTML line
Hi, My names Chance
I'm a 2nd year web design student and have been assigned a project by my teacher for a charity website
i found a tutorial of exactly what i need to do but im stuck on creating a script to import and convert php data
to a single html line
heres the link to the the script, if you scroll down to the bottom
where it says
RSS or XML Data Source
"The scrolling text can be imported from any source: RSS, XML or any other format.
For example, if you want to import data using PHP to convert it into a single HTML line to be displayed by the ticker, create a php script to import and convert the data, and include it directly in the DIV tag as follow"
this is what i need help doing
http://www.mioplanet.com/rsc/newsticker_javascript.htm
i already have the php code that i want to import
i just need to know how to import and convert my php script so im able
to make the the javascript from the link i provided to work
thank you so much for your time
if you have any question or answer please email me
[email protected]
thanks again hope to here from you soonHi
The instructions are there on the page you provided a link to!
What is it you do not understand?
PZ
www.pziecina.com
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