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  • Java: Detecting image format, resize (scale) and save as JPEG

    - by BoDiE2003
    This is the code I have, it actually works, not perfectly but it does, the problem is that the resized thumbnails are not pasting on the white Drawn rectangle, breaking the images aspect ratio, here is the code, could someone suggest me a fix for it, please? Thank you import java.awt.Color; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.io.BufferedInputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import javax.imageio.ImageIO; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class ImageScalerImageIoImpl implements ImageScaler { private static final String OUTPUT_FORMAT_ID = "jpeg"; // Re-scaling image public byte[] scaleImage(byte[] originalImage, int targetWidth, int targetHeight) { try { InputStream imageStream = new BufferedInputStream( new ByteArrayInputStream(originalImage)); Image image = (Image) ImageIO.read(imageStream); int thumbWidth = targetWidth; int thumbHeight = targetHeight; // Make sure the aspect ratio is maintained, so the image is not skewed double thumbRatio = (double)thumbWidth / (double)thumbHeight; int imageWidth = image.getWidth(null); int imageHeight = image.getHeight(null); double imageRatio = (double)imageWidth / (double)imageHeight; if (thumbRatio < imageRatio) { thumbHeight = (int)(thumbWidth / imageRatio); } else { thumbWidth = (int)(thumbHeight * imageRatio); } // Draw the scaled image BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); System.out.println("Thumb width Buffered: " + thumbWidth + " || Thumb height Buffered: " + thumbHeight); Graphics2D graphics2D = thumbImage.createGraphics(); // Use of BILNEAR filtering to enable smooth scaling graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); // graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null); // White Background graphics2D.setPaint(Color.WHITE); graphics2D.fill(new Rectangle2D.Double(0, 0, targetWidth, targetHeight)); graphics2D.fillRect(0, 0, targetWidth, targetHeight); System.out.println("Target width: " + targetWidth + " || Target height: " + targetHeight); // insert the resized thumbnail between X and Y of the image graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null); System.out.println("Thumb width: " + thumbWidth + " || Thumb height: " + thumbHeight); // Write the scaled image to the outputstream ByteArrayOutputStream out = new ByteArrayOutputStream(); ImageIO.write(thumbImage, OUTPUT_FORMAT_ID, out); return out.toByteArray(); } catch (IOException ioe) { throw new ImageResizingException(ioe); } } }

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  • Windows splash screen using GDI+

    - by Luther
    The eventual aim of this is to have a splash screen in windows that uses transparency but that's not what I'm stuck on at the moment. In order to create a transparent window, I'm first trying to composite the splash screen and text on an off screen buffer using GDI+. At the moment I'm just trying to composite the buffer and display it in response to a 'WM_PAINT' message. This isn't working out at the moment; all I see is a black window. I imagine I've misunderstood something with regards to setting up render targets in GDI+ and then rendering them (I'm trying to render the screen using straight forward GDI blit) Anyway, here's the code so far: //my window initialisation code void MyWindow::create_hwnd(HINSTANCE instance, const SIZE &dim) { DWORD ex_style = WS_EX_LAYERED ; //eventually I'll be making use of this layerd flag m_hwnd = CreateWindowEx( ex_style, szFloatingWindowClass , L"", WS_POPUP , 0, 0, dim.cx, dim.cy, null, null, instance, null); SetWindowLongPtr(m_hwnd ,0, (__int3264)(LONG_PTR)this); m_display_dc = GetDC(NULL); //This was sanity check test code - just loading a standard HBITMAP and displaying it in WM_PAINT. It worked fine //HANDLE handle= LoadImage(NULL , L"c:\\test_image2.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE); m_gdip_offscreen_bm = new Gdiplus::Bitmap(dim.cx, dim.cy); m_gdi_dc = Gdiplus::Graphics::FromImage(m_gdip_offscreen_bm);//new Gdiplus::Graphics(m_splash_dc );//window_dc ;m_splash_dc //this draws the conents of my splash screen - this works if I create a GDI+ context for the window, rather than for an offscreen bitmap. //For all I know, it might actually be working but when I try to display the contents on screen, it shows a black image draw_all(); //this is just to show that drawing something simple on the offscreen bit map seems to have no effect Gdiplus::Pen pen(Gdiplus::Color(255, 0, 0, 255)); m_gdi_dc->DrawLine(&pen, 0,0,100,100); DWORD last_error = GetLastError(); //returns '0' at this stage } And here's the snipit that handles the WM_PAINT message: ---8<----------------------- //Paint message snippit case WM_PAINT: { BITMAP bm; PAINTSTRUCT ps; HDC hdc = BeginPaint(vg->m_hwnd, &ps); //get the HWNDs DC HDC hdcMem = vg->m_gdi_dc->GetHDC(); //get the HDC from our offscreen GDI+ object unsigned int width = vg->m_gdip_offscreen_bm->GetWidth(); //width and height seem fine at this point unsigned int height = vg->m_gdip_offscreen_bm->GetHeight(); BitBlt(hdc, 0, 0, width, height, hdcMem, 0, 0, SRCCOPY); //this blits a black rectangle DWORD last_error = GetLastError(); //this was '0' vg->m_gdi_dc->ReleaseHDC(hdcMem); EndPaint(vg->m_hwnd, &ps); //end paint return 1; } ---8<----------------------- My apologies for the long post. Does anybody know what I'm not quite understanding regarding how you write to an offscreen buffer using GDI+ (or GDI for that matter)and then display this on screen? Thank you for reading.

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  • google earth alway on top

    - by aharont
    i am using google earth in my C# app. and when i want to show a child window the google earth hiding it behind him and i can't see the window. my question is how to do that the google earth wo'nt be always on top?

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  • How to allow resizing of QMessageBox in PyQt4

    - by Simeon Fitch
    I'm using the nice feature in QMessageBox to optionally show detailed text to the user. However, the window after expansion is still fairly small, and one immediately tries to resize the window so more of the details are visible. Even after setting what I think are the proper settings it won't allow resizing. Here's the relevant snippet of PyQt4 code: mb = QMessageBox() mb.setText("Results written to '%s'" % filename) mb.setDetailedText(str(myData)) mb.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) mb.setSizeGripEnabled(True) Am I missing a step and/or is this at all possible?

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  • Launch another instance of Java app on Mac

    - by TomA
    I have a Mac Java app bundle that has problems opening an OpenGL window from a SWT dialog in a single process. It just doesn't work. To solve this problem I would like to open a SWT dialog in one instance of the Java app and then have it launch another instance of itself with a parameter saying "this time open the OpenGL window". The part I don't know how to do is finding out what "itself" is on a Mac. How can I do that?

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  • How to combine array list string in java ?

    - by tiendv
    I have some arraylist string with keyword inside like that ! A windows is arraylist string with keyword is bold Struct of window : 9 words before + keyword + 9 words after You can see some window overlaping How to i combine that arraylist to receive like that : Thanks

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  • What are "Location" and "Repositories" in the VisualSVN?

    - by Roman
    I am trying to install VisualSVN to manage my code with other users. In the middle of the installation I have a window saying "Change if necessary installation path and initial VisualSVN Server setting". And after that (in the same window) I have two fields: "Location" and "Repositories". What these two parameters mean? I know URL where the common code is stored. Should I specify this URL in the "repositories" field?

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  • Detached views in eclipse on linux

    - by Nils Otto
    Hi, When i detach wiews in eclipse on ubuntu, eg package explorer, it shows up as a separate window in ubuntu (Eclipse ends up taking up 4 windows, and that makes alt-tabbing through my open programs a pain) Is there a way to fix this so Eclipse only show up as one window in ubuntu no matter how many vews are detached?

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  • VB script want to run .bat file from VB

    - by yael
    hi I am try to run the go.bat from VB but when I run the script I get: :cant find specific file but from the cmd window the file go.bat exsit what the problem? Dim MyShell Dim shell_cmd shell_cmd = "C:\Program Files\dir1\dir2\wizard\go.bat" set MyShell = CreateObject("WScript.Shell") MyShell.Run shell_cmd, 1, 1 from cmd window C:\Program Files\dir1\dir2\wizardgo.bat

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  • how to make the batch file wait until another batch file completes execution?

    - by Arunachalam
    how to make the batch file wait until another batch file completes execution? let me explain with an example. echo hi >r.txt echo some piece of code >>r.txt start ar.bat echo some piece of coe >>ar.txt i want the code after start ar.bat to execute after this batch file exits .. i have tried without start it works but i want to run it in a seperate window ..is there any function to check whether that window which is running ar.bat is present ?

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  • Using Kal calendar without doing the initialization (and so on) in the AppDelegate

    - by testing
    I'm using the Kal calendar. For the code shown below I'm referring to the Holiday example. In this example the allocation and initialization of Kal is done in the applicationDidFinishLaunching in the AppDelegate. The UITableViewDelegate protocol (e.g. didSelectRowAtIndexPath) is also positioned in the AppDelegate class. The AppDelegate: #import "HolidayAppDelegate.h" #import "HolidaySqliteDataSource.h" #import "HolidaysDetailViewController.h" ## Heading ###import "Kal.h" @implementation HolidayAppDelegate @synthesize window; - (void)applicationDidFinishLaunching:(UIApplication *)application { kal = [[KalViewController alloc] init]; kal.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStyleBordered target:self action:@selector(showAndSelectToday)] autorelease]; kal.delegate = self; dataSource = [[HolidaySqliteDataSource alloc] init]; kal.dataSource = dataSource; // Setup the navigation stack and display it. navController = [[UINavigationController alloc] initWithRootViewController:kal]; [window addSubview:navController.view]; [window makeKeyAndVisible]; } // Action handler for the navigation bar's right bar button item. - (void)showAndSelectToday { [kal showAndSelectDate:[NSDate date]]; } #pragma mark UITableViewDelegate protocol conformance // Display a details screen for the selected holiday/row. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { Holiday *holiday = [dataSource holidayAtIndexPath:indexPath]; HolidaysDetailViewController *vc = [[[HolidaysDetailViewController alloc] initWithHoliday:holiday] autorelease]; [navController pushViewController:vc animated:YES]; } #pragma mark - - (void)dealloc { [kal release]; [dataSource release]; [window release]; [navController release]; [super dealloc]; } @end I don't want to put this into the AppDelegate, because there could be some overlapping code with other views. It should be a separate "component" which I can call and put on the stack. In my navigation based project I have a main view, the RootViewController. From there I want to push the Kal view on the stack. Currently I'm pushing an additional ViewController on the stack. In the viewWillAppear method from this ViewController I do the things shown in the code above. The following problems appear: Navigation back has to be done two times (one for the Kal calendar, one for my created view) Navigation to my main view is not possible anymore In the moment I don't know where to put this code. So the question is where to put the methods for allocation/initialization as well as the methods for the UITableViewDelegate protocol.

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  • iFrame isolation

    - by Louis
    Just a thought, but would using an IFRAME over a DIV essentially make that element isolated from the window in a way that slow scripts running in the IFRAME wouldn't affect the other frames/window?

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  • c# change global cursor

    - by andySF
    Hi, it is possible to change global mouse cursor from c#? the thing is i use a global hook shortcut key to capture a window like spywindow and i want to change mouse cursor globally when i select my handle and restore it when i click left mouse. Another question is about the click itself. When I'm in capture mode can i take click just for my purpose?it will be nice if i didn't press stuff on screen when i select my window!. Thanks!

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  • Regarding Application Templates

    - by user185590
    Hi Folks , Here is Jagadeesh, New to the Iphone Development Platform , i need to know the Difference among the Templates for our Applications( like we have Navigation, view, window, Open Gl, Tab Bar, Utility type application)over there and there is a small description at the bottom of the pane , can anyone let me know the Complete description and Templates Screen shot(like View based aPpliction screen shot, Window based Screen Shot Etc..., ) so that as a beginner it is very easy to learn....

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  • Focus on textbox based on URL.

    - by Cameron
    I have two forms on one page and want to have the input boxes focused based on the URL. So for example: domain.com/Default.aspx#login and domain.com/Default.aspx#register and the javascript I have this: window.document.getElementById('<%=txtUserName.ClientID %>').focus(); window.document.getElementById('<%=txtEmail.ClientID %>').focus(); it might be better if the urls are Default.aspx?action=login actually (not sure if this effects the way in which it would work)

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  • Need help with android.os.Build.VERSION.SDK_INT and SharedPreferences

    - by Fenderf4i
    I have a main activity where I call VersionSettings vs = new VersionSettings(this); if (vs.firstRun2()) vs.versionCheckbox(); What I'm trying to do is set a checkbox (checkboxVideoType) to an unchecked state if the Android version is 1.6-2.1 I only want to do this the very first time the app is ever run, it never needs to run again. I think I'm running into the problem when the main activity calls versionCheckbox(), I get a force close if it attempts to run the code inside that is going to set the checkbox to false. I'm very new to programming and would really appreciate some help with this. I think I'm close, but need a push. Thanks in advance! Main Activity import android.app.Activity; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.ImageView; public class Nasatv extends Activity implements OnClickListener { boolean checkboxIsChecked; SharedPreferences nasaTV_Prefs; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.window_title); nasaTV_Prefs = getSharedPreferences("nasaTV_Prefs", 0); ChangeLog cl = new ChangeLog(this); if (cl.firstRun()) cl.getLogDialog().show(); VersionSettings vs = new VersionSettings(this); if (vs.firstRun2()) vs.versionCheckbox(); Button button = (Button) findViewById(R.id.button1); button.setOnClickListener(this); Button button2 = (Button) findViewById(R.id.button2); button2.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent i = new Intent(Nasatv.this, LaunchCalendar.class); startActivity(i); } }); Button button3 = (Button) findViewById(R.id.button3); button3.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent i = new Intent(Nasatv.this, PhotoInfo.class); startActivity(i); } }); CheckConnectivity check = new CheckConnectivity(); Boolean conn = check.checkNow(this.getApplicationContext()); if(conn == true){ ImageView updateImage = (ImageView) findViewById(R.id.updateImage); ImageDownloader downloader = new ImageDownloader(updateImage); downloader.execute("http://www.url.com/trl/ubox.jpg"); } else { ImageView updateImage = (ImageView) findViewById(R.id.updateImage); updateImage.setImageResource(R.drawable.uboxerror); } } public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.options_menu, menu); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.setting_title: Intent settingsActivity =new Intent(getBaseContext(), Settings.class); startActivity(settingsActivity); return true; case R.id.photo_archive: Intent archive = new Intent(Nasatv.this, PhotoArchive.class); startActivity(archive); return true; case R.id.n_web: Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.nasa.gov/")); startActivity(intent); return true; case R.id.exit_title: finish(); return true; default: return super.onOptionsItemSelected(item); } } public void onResume() { super.onResume(); checkboxIsChecked = nasaTV_Prefs.getBoolean("checkboxVideoType", true); } @Override public void onClick(View v) { if (checkboxIsChecked) { Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.nasa.gov/multimedia/nasatv/nasatv_android_flash.html")); startActivity(intent); } else { Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("rtsp://nasadln.qt.llnwd.net/nasa101.sdp")); startActivity(intent); } } } One-time run class import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.util.Log; import android.widget.CheckBox; public class VersionSettings { private final Context context; private String notRun, hasRun; private SharedPreferences run; private CheckBox checkboxVideoType; private SharedPreferences nasaTV_Prefs; private static final String HAS_RUN = "PREFS_HAS_RUN"; int currentapiVersion = android.os.Build.VERSION.SDK_INT; /** * Constructor * * Retrieves whether the app has been run or not and saves to * SharedPreferences */ public VersionSettings(Context context) { this.context = context; this.run = PreferenceManager.getDefaultSharedPreferences(context); // get run/not run string number, which is "1" this.notRun = run.getString(HAS_RUN, ""); Log.d(TAG, "notRun: " + notRun); this.hasRun = context.getResources().getString(R.string.has_run_string); Log.d(TAG, "hasRun: " + hasRun); // save new number to preferences, which will be the same number, // so this is run only the very first time the app is run SharedPreferences.Editor editor = run.edit(); editor.putString(HAS_RUN, hasRun); editor.commit(); } /** * @return true if this version of your app is started for the first * time */ public boolean firstRun2() { return ! notRun.equals(hasRun); } /** * @return Change the checkboxVideoType to "unchecked" (false) * */ public void versionCheckbox() { // this.context = context; if (currentapiVersion < android.os.Build.VERSION_CODES.FROYO){ this.nasaTV_Prefs = PreferenceManager.getDefaultSharedPreferences(context); SharedPreferences.Editor editor = nasaTV_Prefs.edit(); editor.putBoolean("checkboxVideoType", false); editor.commit(); } } private static final String TAG = "VersionSettings"; } Preferences Activity import android.app.Activity; import android.content.SharedPreferences; import android.os.Bundle; import android.view.View; import android.view.Window; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; public class Settings extends Activity implements OnCheckedChangeListener { private CheckBox checkboxVideoType; private SharedPreferences nasaTV_Prefs; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.preferences); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.window_title); checkboxVideoType = (CheckBox) findViewById(R.id.checkboxVideoType); checkboxVideoType.setOnCheckedChangeListener(this); nasaTV_Prefs = getSharedPreferences("nasaTV_Prefs", 0); checkboxVideoType.setChecked(nasaTV_Prefs.getBoolean("checkboxVideoType", true)); Button clbutton = (Button) findViewById(R.id.clbutton); clbutton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { ChangeLog cl = new ChangeLog(Settings.this); cl.getFullLogDialog().show(); } }); } public void onCheckedChanged(CompoundButton cb, boolean isChecked) { if (cb == checkboxVideoType){ SharedPreferences.Editor editor = nasaTV_Prefs.edit(); editor.putBoolean("checkboxVideoType", isChecked); editor.commit(); // Commit the edit, i.e., save the state of the flag! } } }

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  • Display custom title bar in XML

    - by Casebash
    In Android documentation describing "Configuring General Window Properties", it is suggested that specifying properties via XML is preferable whenever possible. As an example, instead of setting Window.FEATURE_NO_TITLE with requestWindowFeature, they set it to @android:style/Theme.NoTitleBar. Is there a similar way to set a custom title bar to be used in the XML?

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  • how to center jquery dialog with ui 1.8?

    - by Jeremy
    I'm having trouble getting the jquery ui 1.8 dialog to center I've tried leaving the options default, and setting position: 'center'. When the dialog displayed, the browser window gets scrolled down to the centre of the page, and the dialog is positioned at the bottom left of the window. This worked fine with jquery 1.3.2 and ui 1.7.2. Is there something new I need to do with this version?

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  • custom control in DataGridTemplateColumn

    - by Johnsonlu
    Hi all, I'd like to add my custom control into a template column of data grid. The custom control is very similar to a text box, but has an icon in it. The user can click the icon, and selects an item from a prompted window, then the selected item will be filled into the text box. My problem is when the text box is filled, after I click the second column, the text will disappear. If I replace the custom control with a simple text box, the result is the same. Here is the sample code: //Employee.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace SimpleGridTest { public class Employee { public string Department { get; set; } public int ID { get; set; } public string Name { get; set; } } } Mainwindow.xaml <Window x:Class="SimpleGridTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <DataGrid x:Name="grid" Grid.Row="1" Margin="5" AutoGenerateColumns="False" RowHeight="25" RowHeaderWidth="10" ItemsSource="{Binding}" CanUserAddRows="True" CanUserSortColumns="False"> <DataGrid.Columns> <DataGridTemplateColumn Header="Department" Width="150"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBox Text="{Binding Department}" /> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> <DataGridTextColumn Header="ID" Binding="{Binding Path=ID}" Width="100"/> <DataGridTextColumn Header="Name" Binding="{Binding Path=Name}" Width="200"/> </DataGrid.Columns> </DataGrid> </Grid> </Window> MainWindow.xaml.cs using System.Windows; using System.Collections.ObjectModel; namespace SimpleGridTest { /// <summary> /// Interaction logic for MainWindow.xaml /// </summary> public partial class MainWindow : Window { private ObservableCollection<Employee> _employees = new ObservableCollection<Employee>(); public ObservableCollection<Employee> Employees { get { return _employees; } set { _employees = value; } } public MainWindow() { InitializeComponent(); grid.ItemsSource = Employees; } } } How can I fix this problem? Or I need to write a DataGrid***Column as DataGridTextColumn? Thanks in advance! Best Regards, Johnson

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  • How does the event dispatch thread work?

    - by Roman
    With the help of people on stackoverflow I was able to get the following working code of the simples GUI countdown (it just displays a window counting down seconds). My main problem with this code is the invokeLater stuff. As far as I understand the invokeLater send a task to the event dispatching thread (EDT) and then the EDT execute this task whenever it "can" (whatever it means). Is it right? To my understanding the code works like that: In the main method we use invokeLater to show the window (showGUI method). In other words, the code displaying the window will be executed in the EDT. In the main method we also start the counter and the counter (by construction) is executed in another thread (so it is not in the event dispatching thread). Right? The counter is executed in a separate thread and periodically it calls updateGUI. The updateGUI is supposed to update GUI. And GUI is working in the EDT. So, updateGUI should also be executed in the EDT. It is why the code for the updateGUI is inclosed in the invokeLater. Is it right? What is not clear to me is why we call the counter from the EDT. Anyway it is not executed in the EDT. It starts immediately a new thread and the counter is executed there. So, why we cannot call the counter in the main method after the invokeLater block? import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.SwingUtilities; public class CountdownNew { static JLabel label; // Method which defines the appearance of the window. public static void showGUI() { JFrame frame = new JFrame("Simple Countdown"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); label = new JLabel("Some Text"); frame.add(label); frame.pack(); frame.setVisible(true); } // Define a new thread in which the countdown is counting down. public static Thread counter = new Thread() { public void run() { for (int i=10; i>0; i=i-1) { updateGUI(i,label); try {Thread.sleep(1000);} catch(InterruptedException e) {}; } } }; // A method which updates GUI (sets a new value of JLabel). private static void updateGUI(final int i, final JLabel label) { SwingUtilities.invokeLater( new Runnable() { public void run() { label.setText("You have " + i + " seconds."); } } ); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { showGUI(); counter.start(); } }); } }

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