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Bring control from application to java frame

I use a java program for communication between a arduino board and a scratch file. The communication happen well. I use a user interface to start the communication where i have buttons called
connect
close and minimize
When the user clicks the connect button code will check the value in combo box and accordingly it opens the scratch file.
Once the connect button is clicked the control moves to the scratch application. After completing my work when i tried closing the scratch. My scratch application closes as expected but the control does not return to the user interface because of which i am not able to close the application and i close it in net beans forcefully. In the output screen i don't see build successful and instead i get build stopped. That is my process works perfectly until i give connect but once the button is pressed it is hanged up some where.
I tried making it as a jar file and running it in a different machine at that time i use end task in task manager to close the application.
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
if("Disconnect".equals(jButton1.getText()))
{
System.exit(0);
}
if(jComboBox2.getSelectedItem()==null)
{
System.out.println("Select one port");
}
else
{
Runtime r = Runtime.getRuntime();
try {
//this.hide();
//p = r.exec("C:\\Program Files\\Scratch 2\\Scratch 2.exe C:\\Users\\Admin\\Desktop\\fwdbckpwm12.sb2");
p = Runtime.getRuntime().exec("C:\\Program Files\\Scratch 2\\Scratch 2.exe C:\\Users\\Admin\\Desktop\\scratch files new.sb2");
//Runtime.getRuntime().exec("taskkill /F /IM <p>.exe");
//p.destroy();
//r.exec("C:\\Windows\\notepad.exe C:\\Windows\\ss.txt");
//this.setDefaultCloseOperation(EXIT_ON_CLOSE);
A4S a4sObj = new A4S(new String[] {jComboBox2.getSelectedItem().toString()}); //defaultline
//A4S a4sObj = new A4S(new String[]{"COM16"}); //addedline
//r.gc();
//this.setDefaultCloseOperation(EXIT_ON_CLOSE);
} catch (IOException ex) {
Logger.getLogger(serialportselection.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
//p.destroy();
//System.gc();
// }
}
Here is the code i tried. But none seems to work.

Move all Process related work into separate Thread.
Use waitFor method to recognise Process end - then you are free to
exit your app.

As I can understood you used SWING for creating UI.
You can set
yourFrame.setDefaultCloseOperation(EXIT_ON_CLOSE);
for your frame. This must help.

How to close external programs (Powerpoint) running on the native desktop using Java?

I have to create an application that will automatically open a powerpoint file, let it play through, and then close it. Not only do I need to figure out HOW to close it, but I also must detect when it closes or stops.
First option:
I know how long each powerpoint will play for, so I can hardcode when to close the file. I just need to know how to do that. There are no methods in the desktop class (that I could find) for closing.
Second option:
If someone knows a microsoft powerpoint api that lets me open powerpoints and use java to progress through the slideshow and get the state or something, that'd be great. I wouldn't have to go into each presentation and count the number of slides and the transition timer on each slide.
The opening, letting it play, and closing it is a small part of the app I need to create. But here is what I have so far with regards to THIS problem:
File myfile = new File("PowerPoint.ppsx");
try {
Desktop.getDesktop().open(myfile);
} catch (IOException ex) {
Logger.getLogger(Sc.class.getName()).log(Level.SEVERE, null, ex);
}

Probably this is the solution how to close external program:
http://www.java-forums.org/new-java/59691-close-another-program.html#post285956
If you want to detect when program has stopped running then you can start new thread with loop which from time to time will check if the program process is still running, using the same method as mentioned in link.
This is solution only for one (Windows) platform, Java is not the best choice for such tasks.

Here a solution using JNA. First we get the handle, we search using the "class name" of the window. You can determine the class name for a specific program (in this case Powerpoint) with a special utility like Spy++ (included with Visual Studio). It's possible to make the search more precise using the class name and the window caption (but here I use only the class name) so if you have more than one presentation running ... you may not close the good one!.
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinUser;
import com.sun.jna.platform.win32.WinDef.HWND;
// https://github.com/twall/jna#readme
// you need 2 jars : jna-3.5.1.jar and platform-3.5.1.jar
public class KillMyPP {
public static void main(String[] args) {
HWND hwnd = User32.INSTANCE.FindWindow("screenClass", null);
if (hwnd == null) {
System.out.println("PPSX is not running");
}
else {
User32.INSTANCE.PostMessage(hwnd, WinUser.WM_QUIT, null, null);
}
}
}

JOGL javaw.exe remains running after application is closed

I have a simple java application that uses JOGL. When I run it from eclipse, and then close the application window, javaw.exe remains running. Here is the the relevant code:
public class App {
private Display mDisplay;
private Shell mShell;
private GL4 mGl;
private int mProgramId;
private int mVsId;
private int mFsId;
// ...
public void start() {
if (!initialize()) {
return;
}
while (!mShell.isDisposed()) {
if (!mDisplay.readAndDispatch()) {
mDisplay.sleep();
}
}
destroy();
}
private void initialize() {
mDisplay = new Display();
mShell = new Shell(mDisplay);
// some SWT and opengl initialization code, which is irrelevant for this issue
// (at least I think so)
// getting GLProfile, GLContext, GL4 etc.
final String vsText = ResourceManager.getShaderText(vsPath);
final String fsText = ResourceManager.getShaderText(fsPath);
mVsId = mGl.glCreateShader(GL4.GL_VERTEX_SHADER);
mFsId = mGl.glCreateShader(GL4.GL_FRAGMENT_SHADER);
mGl.glShaderSource(mVsId, 1, new String[] { vsText }, null, 0);
mGl.glCompileShader(mVsId);
mGl.glShaderSource(mFsId, 1, new String[] { fsText }, null, 0);
mGl.glCompileShader(mFsId);
mProgramId = mGl.glCreateProgram();
mGl.glAttachShader(mProgramId, mFsId);
mGl.glAttachShader(mProgramId, mVsId);
// bind a constant attribute location for positions of vertices
mGl.glBindAttribLocation(mProgramId, 0, "in_Position");
// bind another constant attribute location, this time for color
mGl.glBindAttribLocation(mProgramId, 1, "in_Color");
mGl.glLinkProgram(mProgramId);
// here error code is 0x0 (no error)
int error = mGl.glGetError();
mShell.open();
return true;
}
private void destroy() {
// here error code is 0x502 (GL_INVALID_OPERATION)
int error = mGl.glGetError();
mGl.glDetachShader(mProgramId, mFsId);
mGl.glDetachShader(mProgramId, mVsId);
mGl.glDeleteShader(mFsId);
mGl.glDeleteShader(mVsId);
mGl.glDeleteProgram(mProgramId);
mDisplay.dispose();
}
}
I commented out all rendering code and most other opengl/JOGL related calls (besides getting GLProfile, GLContext, GL4 and everything listed in this sample) and this problem persists.
Generally, the application works fine, shaders compile and link without problem (I used validation which I didn't display in this sample) and it displays what it needs to. The only problem is that javaw.exe remains running after I close the application window (by pressing the x in the corner of the window).
This issue is removed only if I comment out mGl.glCompileShader(mVsId); and subsequent lines. If I leave this line, javaw.exe will remain running, so I guess the problem is related to shader initialization/destruction code.
Also, glGetError() returns 0 (no error) at the end of initialize() and 0x502 (GL_INVALID_OPERATION) at the beginning of destroy(). There is only the main loop in between and no opengl calls that I know of, since, for testing, I commented out all rendering code.
Any ideas?
Edit 2012-10-03:
I still don't know what the problem is, but since I updated my graphic card drivers, 'javaw.exe' terminates as it should after application is closed. I have AMD Radeon HD 6870. My current driver version is 8.982 from 2012-07-27, and I can't remember what the last version was, but I believe it was from january 2011 or so.
However, glGetError() still returns 0x502 at the beginning of destroy, so I guess there is still something wrong.

Assuming you use JOGL from jogamp.org, pls use either our SWT GLCanvas
or our NEWTCanvasSWT.
The latter is preferred due to custom GLCapabilities, pls check API doc.
This given plus you are doing everything SWT related on the SWT thread (read
linked unit tests), IMHO it should work - at least our unit tests.
Since you mentioned after an update (GPU/driver) your troubles ceased to exist,
it might have been a driver problem.
Now to your GL error. Trace GL errors can be simply done by setting the system property 'jogl.debug.DebugGL', i.e. on the commandline "-Djogl.debug.DebugGL".
This will install the debug pipeline for your GL object automatically and checks for GL error, which will throw an GLException if appear.
You can also trace via the property 'jogl.debug.TraceGL'.

I don't know if this is relevant or not, but may help someone I guess so I'm gonna share it here. Keep in mind I'm just a hobbyist getting started in Java SWT.
I made a simple application in Eclipse IDE using the Java SWT library. I made a ''Quit'' button in my main Window shell that when pushed calls this :
quitBtn.addSelectionListener(new SelectionAdapter() {
#Override
public void widgetSelected(SelectionEvent e) {
shell.getDisplay().dispose();
System.exit(0);
}
});
After exporting the .jar file to Desktop, I converted it to a .exe file with LaunchJ4 wrapper and check the "Allow only a single instance of the application" in the Single instance tab using the singleR3XPlayer mutex.
When I would close the .exe file with the "Quit" button, everything was fine and the javaw.exe would terminates. But when I closed the shell with the X button on the top-right window, javaw.exe would remains running. I figured that out when I tried to delete the .exe file (Windows "Used file, still open in Java(TM) Platform SE binary, close the file and retry" type of error pop-up) and as I couldn't open another instance of the file after closing it with the X button (because of the Single instance mutex). Also, multiple instances of javaw.exe would remains running if I would execute a few of the .jar file (even after closing them, but only with the X and not the "Quit" button).
I figured out closing the window with the X button would only dispose of the shell and not exit the program. But pressing the "Quit" button would because it called System.exit(0). So I did this :
// SWT Event Loop
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
// To make sure javaw.exe terminates when Window is closed
if (shell.isDisposed()) {
System.exit(0);
}
Hence, after my SWT Event loop is done (shell.isDisposed() == true), I made sure System.exit(0) would be called. This way, javaw.exe is terminated either way.
I don't know how SWT works and I don't know if that's the proper way to do it but it ensures javaw.exe is terminated once the application closes.
Hope that helps.

JTwain doesnt work in jsp using servlet

I have downloaded the JTwain api and created/tested a java class to connect to my scanner, open the scanner UI and scan image back into java without any problems.
I then tried to create a JSP in tomcat where form action connects to servlet doPost method, which then calls the JTwain method.
The problem im getting is that instead of getting the kodak scanner window asking me to press scan the webpage just freezes. I put some system.outs to check where it freezes and it stops at 2 as if the kodak scanner dialog is displaying and waiting for me to press the scan button.
public static Image initScan(){
try {
Source source = SourceManager.instance().getDefaultSource();
System.out.println(1);
source.open();
System.out.println(2);
Image image = source.acquireImage();
System.out.println(3);
return image;
}catch(Exception e) {
e.printStackTrace();
return null;
}finally{
SourceManager.closeSourceManager();
}
}
I assumed it would work like any file open dialogue but clearly not, any suggestions?

I don't know anything about JTwain, but the JSP is executed on the server, not the client. And I suppose your Tomcat has no access to a GUI interface, which would explain that it can't open a Window. (Or it opens the window on the server, where you can't see it.)
Do you see anything in the server logfile?

Problem with java.awt.Desktop

I have a button in my program that, when pressed, is supposed to take you to my wiki page about the program. I used the following line to do so:
java.awt.Desktop.getDesktop().browse(new java.net.URI("http://supuh.wikia.com/wiki/BHT"));
The problem is that, no matter what environment in which the program is run, I always get the following error:
java.security.AccessControlException: access denied (java.awt.AWTPermission showWindowWithoutWarningBanner)
does anyone know how I can fix this? Note that this only works in the one program. Any other program I make can use the same method with no problem.
Exit hook
At the start of my program, this hook is added. The program runs fine without it...
System.setSecurityManager(new SecurityManager()
{
#Override
public void checkExit(int status)
{
closeFile(status);
}
});
this hook is needed, but the browse(URI uri) method in question won't work with it. Solutions?

This means you are running with a security manager:
SecurityException - if a security manager exists and it denies the AWTPermission("showWindowWithoutWarningBanner") permission, or the calling thread is not allowed to create a subprocess; and not invoked from within an applet or Java Web Started application
If this is an applet, or a Java Web Start app - sign your jar.
Update Adding a security manager to detect program exit is wrong. There are multiple ways to do this properly. In your case I guess this would be most appropriate:
Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
#Override
public void run() {
closeFile();
}
));
Swing-specific solutions are:
if you don't have to perform extra actions, use frame.setDefaultCloseAction(Frame.EXIT_ON_CLOSE)
use addWindowStateListener and check for WindowEvent.WINDOW_CLOSED
That said, two notes:
you must not hold files open for a long time. Use try/catch/finally to open and close them whenever they are needed.
if you really need a security manager at some point, make sure you override the appropriate method of the SecurityManager that checks whether you can open the link. (won't tell you which one, so that you are not tempted to jump onto this solution, which is wrong)
To summarize, I'd go for setDefaultActionOnClose, and close each file right after I finish reading/writing it.
Update 2: After you linked to your original question describing what exactly are you trying to achieve, things change a bit. You are trying to prevent exit, so you do need a SecurityManager. This makes it so that you should override the checkPermission method and do nothing there (i.e. don't throw exceptions), at least when these permissions are checked (they are checked when browse is called):
new AWTPermission("showWindowWithoutWarningBanner")
new FilePermission("<<ALL FILES>>", SecurityConstants.FILE_EXECUTE_ACTION)
Update 3 Here's how exactly to override the method:
#Override
public void checkPermission(Permission permission) {
if (permission instanceof AWTPermission) {
if (permission.getName().equals("showWindowWithoutWarningBanner")) {
return;
}
}
if (permission instanceof FilePermission) {
if (permission.getActions().equalsIgnoreCase("execute")) {
return;
}
}
java.security.AccessController.checkPermission(permission);
}
(you can go without the outer if-s)
Update 4 The above method will work only if you have given permissions to your program. Otherwise it is a not-well documented behaviour of the JVM that overriding security managers are not allowed to be unprivileged. Take a look at this report - the comments say how to work it around.
To make your life simpler, you can simply #Override public void checkPermission(..) with an empty method body.

Instead of using your own SecurityManager, install a shutdown hook instead:
Runnable runnable = new Runnable() {
closeFile(status);
}
Runtime.getRuntime().addShutdownHook(new Thread (runnable, "Close file"));