I have question about Drag And Drop in Java.
I was able to to implement drag and drop files from Windows Explorer to Swing application.
Now I need to oposite direction.
I have JTable which contains Column with object type File. I just need to detect which file (files) are dragged and where in Windows Explorer.
Thanks in advance.
I was working with java<->native DnD couple of years ago and my findings were something like below.
If you need to know to which folder dragged files were dropped (for example) to write them out from database: I am quite unsure this is possible. The best you could do is precreating files on drag start, passing correct file references to drop target app, and hoping that explorer default drop handler does what you need. I suspect that on drag-out of java app you have no control and no callbacks on the drop target application (until you have own fancy super-hook somewhere on the explorer side).
Not sure your scenario is as bad as mine was; the feature was not critical and we deferred it...
I guess, all you need can be found here
Related
In my Java application I am using JFileChooser for choosing files from directory. I would like to select multiple files with dragging mouse over them. By default it's not working, but I enabled multiple selection. I don't know how to do it.
Is there any other way to do it or any other API? Any help will be gladly appreciated.
After searching a lot I found an API namely ,
Native Swing "The DJ Project"
In this API ,there is a class "JFileDialog" this is what i was looking for.This filedialog allows multiple selection with mouse drag and also better than Jfilechooser in the point of look and feel.But before Using this API one must have to add DJNativeSwing.jar , DJNativeSwing-SWT.jar , swt-4.3-win32-win32-x86.jar library to the project build path and also the project should be Run with 32-bit JRE .
see this snippet of code as example from this link : https://dzone.com/articles/native-dialogs-swing-little
I would like to move files from the Windows Explorer to my Java GUI and act on that event by receiving the path of the file(s) to upload it(them) to a server.
What kind of event is that? Where can I find some information about it (example code?) ?
Thanks :)
Sounds like you're talking about drag and drop (DnD) events. And here's a CodeProject article that does Windows <-> Java app DnD.
I am working on a large undocumented application written in swing/awt. I have to make changes to it and i need to find out what class a form belongs to when i open it. Is there a way to do this via eclipse?
For example: I open the application and to do something with the app such that some frame opens. How do i find out the class of that form? Can this be done through eclipse?
I know i can comb trough the logic but this is a very laborious and largely ineffective process, chunks of the logic are either in jar files or obfuscated.
Thanks.
For figuring out how a given Swing frame is put together, I have found Swing Explorer to be VERY helpful.
https://swingexplorer.dev.java.net/
After installing the Eclipse plugin, note that you need to "Run as ->" to invoke Swing Explorer properly.
I don't know if this is what you need, but maybe you should try searching(MainMenu-->Search) your entire Project for the specific Window title (String) that comes up with this particular window.
I want to create an application in Java that lists a directory and add drag and drop support to it for copying files from that directory to the explorer window opened and vice-versa(Windows system).
While adding support to drag and drop from windows explorer to the java application is quite easy, it kind of eludes me how to do it when the action starts from the java application and ends in explorer.
I tried searching google and SO, but to no avail.
Any pointers, directions, snippets of codes or pseudocodes will be appreciated.
So, is it possible to drag from a java application and transfer data to a drop target in a native application? If yes (it should be), can you point me in the right direction?
Yes, what you have to do is set the mime type on the transferable, and set the accepted actions (i.e. copy, move, etc) as well as the default action (it sounds like a copy action for what you are trying to do). This class is the transfer handler, which is what is used to handle DnD in Swing.
Just use the fileListFlavour DataFlavour and File drag'n drop will "just work" in both directions.
I'm sure you found the section on drag n drop in the java tutorial.
Book: Swing Hacks
Hack # 65
That's your answer :)
I just started using eclipse for some personal projects and am finding the transition from IntelliJ (what I use at work) kind of annoying. I hope it's kosher to ask a few different questions in the same thread. Here goes:
1) How do I get "views" (I'm not sure if this is the term. I mean windows such as Project Explorer, Servers, Console, etc) to stay expanded and on top even after I've clicked back on the editor or another view. I'm pretty sure that right now all of these tabs are "quick views" that I have minimized and then docked, so I may not be doing this right to begin with. In IntelliJ, I would simply just pin the tab.
2) How can I open a file (for instance, an ant build.xml) without having to make it part of an eclipse project? I want the syntax highlighting and Ctrl-click ability that the IDE will give me (not to mention being able to use eclipse's built-in ant), but I don't need to associate the file with any others and so don't see the point of having to make it a part of a project.
3) Is it just me (wouldn't be surprised) or does eclipse have a bug with parsing empty html tags within the body of html tags of the same type. I've only tested this in a JSP, and it doesn't happen with JSF tags. For example: <div id="foo"><div id="bar"/></div>. Eclipse will give a warning saying the first div tag has no end tag. This is with the most recent version of eclipse for Java EE, no plugins have been installed.
4) Finally, a general question: Any best practices or resources to look at for organizing the eclipse interface and perspectives/views? What about workspaces/projects? Is there some tutorial out there that would be really informative that I could read through in less than an hour?
I appreciate any answers and tips/tricks.
First of all, please acknowledge that there are different people in the world and there are people who don't work the "Eclipse way". Even if I was paid for it (and I am), I couldn't work with IDEA. So if Eclipse rubs you the wrong way, it may not be for you. That out of the way, your answers:
In Eclipse, you open a view and let it stay where it is. In IDEA, the view changes all the time, things pop up and go away. Eclipse is static unless you specifically move things around. There are two ways to move things: You can minimize a part (a part is something which contains tabbed views). This moves the part into the closest border. Or you can maximize the current part (Ctrl-M). This pushes all other parts out of the way. Another Ctrl-M will restore the view.
This is a good place to show the difference between IDEA and Eclipse. IDEA tries to anticipate what you're doing and to be helpful. For me, this means it always gets in my way. It will start to format source as I type, things move, etc. That freaks me out. Eclipse is like a toolbox. Everything is there but you have to pick it up. A toolbox doesn't move on its own accord and it doesn't try to be smart.
Eclipse is based on the idea of a workspace. The workspace is the universe and nothing outside exists. If you need to go outside, you must first create a file or folder. In the "New File/Folder" wizard, you can open the advanced options (at the bottom) and link this resource to a real file/folder in the file system. May sound like a lot of effort but it allows Eclipse to display virtually anything in the explorer since it just shows "resources" in there, not actually files.
Smells like a bug. Please report it at https://bugs.eclipse.org/bugs/
I'm not aware of anything.
[EDIT] 3. As cletus pointed out, is not valid HTML. So that might cause the warning.
An Eclipse Perspective is a collection Views and their position. You can customize or create new perspectives, but the existing ones are good enough for a start (Java, J2EE, Java Browsing etc.). I recommend to stick with the default layout for a while until you've managed to use the quick view feature (which, personally, i find quite annoying). On small screens, i simply like to use Ctrl-M to switch the Editor to fullscreen mode and back, without the need of minimizing single views or move them around.
Yes, you can run external build scripts as well and it's called External Tool in Eclipse. Go to Run > External Tools > External Tools Configurations. Create either a new Ant-based config or a native executable (Program). The location of the build script or executable can either be workspace-relative (Browse Workspace) or absolute on the file system (Browse File System)