To avoid any ambiguity, use the utilities methods from &lt;a href=&quot;http://download.oracle.com/javase/6/docs/api/javax/swing/SwingUtilities.html#isLeftMouseButton(java.awt.event.MouseEvent)&quot;&gt;SwingUtilities&lt;/a&gt; :


`SwingUtilities.isLeftMouseButton(MouseEvent anEvent)`
`SwingUtilities.isRightMouseButton(MouseEvent anEvent)`
`SwingUtilities.isMiddleMouseButton(MouseEvent anEvent)`


Yes, take a look at this thread which talks about the differences between platforms.

https://stackoverflow.com/questions/2972512/how-to-detect-right-click-event-for-mac-os

`BUTTON3` is the same across all platforms, being equal to the right mouse button. BUTTON2 is simply ignored if the middle button does not exist.



I&#39;ve seen 

    anEvent.isPopupTrigger() 

be used before. I&#39;m fairly new to Java so I&#39;m happy to hear thoughts about this approach :)

I would like to get a list of modified and added files in an specific commit so that I can export them and generate a package with the file structure.

The idea is to get the package and extract it on the server. For many reasons I can&#39;t create a hook to pull the repo automatically and the easiest way I have to keep the server updated is generating this package. 

Export only modified and added files with folder structure in Git

I have the following situation.

I have a Java Class that inherits from another base class and overrides a method.
The base method does not throw exceptions and thus has no `throws ...` declaration.

Now my own method should be able to throw exception but I have the choices to either 

* Swallow the exception or
* Add a throws declaration

Both a not satisfying because the first one would silently ignore the exception (ok I could perform some logging) and the second would generate compiler errors because of the different method headers.


    public class ChildClass extends BaseClass {

        	@Override 
        	public void SomeMethod() {
                throw new Exception(&quot;Something went wrong&quot;);
        	}
    }

Is there a way to throw an exception without adding the throws declaration?

On my three button mouse `MouseEvent.BUTTON2`= Middle Click and `MouseEvent.BUTTON3` = Right Click.

Is this the case on a two button mouse?

Thanks

Java Mouse Event Right Click

On my three button mouse <code>MouseEvent.BUTTON2</code>= Middle Click and <code>MouseEvent.BUTTON3</code> = Right Click.
Is this the case on a two button mouse?
Thanks

My project requires Java 1.6 for compilation and running. Now I have a requirement to make it working with Java 1.5 (from the marketing side). I want to replace method body (return type and arguments remain the same) to make it compiling with Java 1.5 without errors.

**Details:** I have an utility class called `OS` which encapsulates all OS-specific things. It has a method

    public static void openFile(java.io.File file) throws java.io.IOException {
      // open the file using java.awt.Desktop
      ...
    }

to open files like with double-click (`start` Windows command or `open` Mac OS X command equivalent). Since it cannot be compiled with Java 1.5, I want to exclude it during compilation and replace by another method which calls `run32dll` for Windows or `open` for Mac OS X using `Runtime.exec`.

**Question: How can I do that? Can annotations help here?**

Note: I use ant, and I can make two java files `OS4J5.java` and `OS4J6.java` which will contain the `OS` class with the desired code for Java 1.5 and 1.6 and copy one of them to `OS.java` before compiling (or an ugly way - replace the content of `OS.java` conditionally depending on java version) but I don&#39;t want to do that, if there is another way.

Elaborating more: in C I could use `ifdef, ifndef`, in Python there is no compilation and I could check a feature using `hasattr` or something else, in Common Lisp I could use `#+feature`. Is there something similar for Java?

Found [this post](https://stackoverflow.com/questions/1922521/conditional-java-compilation) but it doesn&#39;t seem to be helpful.

Any help is greatly appreciated. kh.


Java conditional compilation: how to prevent code chunks from being compiled?

I use log4j for logging and i want to print all logger.debug statements in a particular class / selected package.

i set the cfg as below&gt;

    log4j.category.my.pkg=info
    log4j.category.my.pkg.ab.class1=debug

but still only info messages are shown..

is this not the right way ?



log4j - set different loglevel for different packages/classes

Anyone have an idea why this command works fine in Windows but in Linux I get a ClassNotFoundException game.ui.Main

    java -cp &quot;.;lib/*&quot; game.ui.Main -Xms64m -Xmx128m

my folder structure looks like this:
lib/ - Jars
game/ - Class files

This is the latest Java 6.

Classpath does not work under linux

Here&#39;s a nice pitfall  I just encountered.
Consider a list of integers:

    List&lt;Integer&gt; list = new ArrayList&lt;Integer&gt;();
    list.add(5);
    list.add(6);
    list.add(7);
    list.add(1);

Any educated guess on what happens when you execute `list.remove(1)`? What about `list.remove(new Integer(1))`? This can cause some nasty bugs.

What is the proper way to differentiate between [`remove(int index)`][1], which removes an element from given index and [`remove(Object o)`][2], which removes an element by reference, when dealing with lists of integers?

&lt;hr&gt;

The main point to consider here is the one [@Nikita mentioned][3] - exact parameter matching takes precedence over auto-boxing.


  [1]: http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html#remove(int)
  [2]: http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html#remove(java.lang.Object)
  [3]: https://stackoverflow.com/questions/4534146/properly-removing-an-integer-from-a-listinteger/4534152#4534152

Properly removing an Integer from a List&lt;Integer&gt;

In my script I need to perform a set of actions through range of dates, given a start and end date.  
Please provide me guidance to achieve this using Java.

    for ( currentDate = starDate; currentDate &lt; endDate; currentDate++) {
    
    }

I know the above code is simply impossible, but I do it in order to show you what I&#39;d like to achieve.

How to iterate through range of Dates in Java?

How can i clear the content of the JTable using Java..

how to clear JTable

I have a dual monitor config and I want to run my GUI in a specific monitor if it is found.  I tried to create my `JFrame` window passing a `GraphicConfiguration` object of my screen device, but it doesn&#39;t work, frame still display on the main screen.

How can I set the screen where my frame must be displayed?

Show JFrame in a specific screen in dual monitor configuration

I have a thread downloading data and I want to wait until the download is finished before I load the data.  Is there a standard way of doing this?

More Info:

I have a Download class that gets data from a URL (Serialized POJOs).  Download is Runnable and Observable.  It keeps track of the bytes downloaded and download size.  I have a progress bar that displays the progress to the User.   The GUI observes Download to update the progress bar.

When the POJO is downloaded I want to get it and move to the next step.  Each step has to wait for the previous to finish.  The problem is I cant think of a way to pause my application to wait for the download thread.  Once the download is finished I want to call `download.getObject()` which will return the data as an object.  I can then cast it and get on with the next download.

I have a helper class that manages the URLs for download and makes all of the calls to Download.  This call will call getObject and do the casting.  The Gui calls `helper.getUser()`. helper starts the thread running and I want it to &#39;know&#39; when it is finished so it can return the casted object. 

Any suggestions/examples? I am in the beginning stages of this design so I am willing to change it.

**Update:**

I followed [http://download.oracle.com/javase/6/docs/api/javax/swing/SwingWorker.html#get][1] and used modal to block until the thread finished.  The code was very messy and I don&#39;t like this approach.  I will keep trying to find a &#39;clean&#39; way to handle the workflow of the download processes.


  [1]: http://download.oracle.com/javase/6/docs/api/javax/swing/SwingWorker.html#get()

Java Wait for thread to finish

I am trying to add an image to a JButton and I&#39;m not sure what I&#39;m missing. When I run the following code the button looks exactly the same as if I had created it without any image attribute. Water.bmp is in the root of my project folder. 

    ImageIcon water = new ImageIcon(&quot;water.bmp&quot;);
		JButton button = new JButton(water);
		frame.add(button);



How do I add an image to a JButton

I would like to use an image as a button in Java, and I tried to do this:


    BufferedImage buttonIcon = ImageIO.read(new File(&quot;buttonIconPath&quot;));
    button = new JButton(new ImageIcon(buttonIcon));


But this still shows the actual button behind the image, I would only like the image to function as the button, how can I do this?

Java: using an image as a button

After enabling `set mouse=a`, text copied inside of Vim will not paste outside of Vim. Does anybody know of a way to fix this?

Here, selecting text with the mouse turns on visual mode and disables the `Copy` option in the popup menu:

![enter image description here][1]

  [1]: http://i.stack.imgur.com/qrJlJ.png

Copying text outside of Vim with set mouse=a enabled

I&#39;m building a HTML5 game and I am trying to put the mouse cursor over a certain control on a specific event so that moving in a specific direction always has the same result. Is this possible?

Move the mouse pointer to a specific position?

First of all, here&#39;s the userland question: [Disabling mouse acceleration in Mac OS X @ superuser][1] 

To summarize: I want to have *linear mouse response* on Mac OS X. That is, no acceleration; an *adjustable* but *constant* `pixels pointer moves / meters mouse moved` ratio.

I have no idea how to go about this. (Well, not true, but it&#39;s better to start from scratch.) Should I write a mouse driver? A startup program? A click-and-forget settings adjuster? A preferences pane?

I want my solution to be as simple, universal and unintrusive as possible, so some criteria might be:

 - Works on Snow Leopard (10.6.5) and later - much later, unless an important piece of the API gets deprecated
 - Works on mice but not touchpads, tablets, magic wands... (Or maybe configurable?)
 - Can easily be applied/run by other people who want the same thing (all 42 of us on the planet)

I&#39;m a fairly experienced C programmer, both in user and kernel space (in Linux and Windows), but know next to nothing about Mac OS X or Darwin. So anything is appreciated, really (&quot;can&#39;t distribute drivers without certificate from Apple&quot;) but some documentation/reference would get me a long way (&quot;Darwin&#39;s Next Generation Mouse Curve Editing API and Examples&quot;).

I know the question is a bit open but I don&#39;t even know what *kind* of a solution could work. Thanks in advance.

Edit: Although I&#39;ve asked both questions to solve the same problem, this is the programmatical counterpart to the other one. (See the first sentence of this question.) Here I&#39;m trying to create my own solution, so to speak, using - I don&#39;t know - some HID API? A driver? A solution on the lines of &quot;open current user&#39;s prefs file and change this setting to this&quot; should probably be posted on the other question, but note that such a solution probably doesn&#39;t exist.

  [1]: https://superuser.com/questions/218314/disabling-mouse-acceleration-in-mac-os-x

Disabling mouse acceleration in Mac OS X

If I hover the mouse over a `div` the mouse cursor will be changed to the cursor like that in HTML anchor.

How can I do this?

Change the mouse cursor on mouse over to anchor-like style

I&#39;m developing a webapp (not a website with pages of interesting text) with a very different interface for touch (your finger hides the screen when you click) and mouse (relies heavily on hover preview).
How can I detect that my user has no mouse to present him the right interface? I plan to leave a switch for people with both mouse and touch (like some notebooks). 

The touch event capability in the browser doesn&#39;t actually mean the user is using a touch device (for example, Modernizr doesn&#39;t cut it).  The code that correctly answers the question should return false if the device has a mouse, true otherwise. For devices with mouse and touch, it should return false (not touch only)

As a side note, my touch interface might also be suitable for keyboard-only devices, so it&#39;s more the lack of mouse I&#39;m looking to detect.

To make the need more clear, here is the API that I&#39;m looking to implement:
    
    // Level 1


    // The current answers provide a way to do that.
    hasTouch();

    // Returns true if a mouse is expected.
    // Note: as explained by the OP, this is not !hasTouch()
    // I don&#39;t think we have this in the answers already, that why I offer a bounty
    hasMouse();

    // Level 2 (I don&#39;t think it&#39;s possible, but maybe I&#39;m wrong, so why not asking)

    // callback is called when the result of &quot;hasTouch()&quot; changes.
    listenHasTouchChanges(callback);

    // callback is called when the result of &quot;hasMouse()&quot; changes.
    listenHasMouseChanges(callback);

Detecting that the browser has no mouse and is touch-only

I want to add a custom right-click menu to my web application. Can this be done without using any pre-built libraries? If so, how to display a simple custom right-click menu which does not use a 3rd party JavaScript library?

I&#39;m aiming for something like what Google Docs does. It lets users right-click and show the users their own menu.

**NOTE:**
I want to learn how to make my own versus using something somebody made already since most of the time, those 3rd party libraries are bloated with features whereas I only want features that I need so I want it to be completely hand-made by me.

How to add a custom right-click menu to a webpage?

I have my div with a right click popup menu:

    // Attatch right click event to folder for extra options
    $(&#39;#fBox&#39; + folderID).mousedown(function(event) {
        if (event.which == 3) {

            // Set ID
            currRClickFolder = folderID;

            // Calculate position to show popup menu
            var height = $(&#39;#folderRClickMenu&#39;).height();
            var width = $(&#39;#folderRClickMenu&#39;).width();
            leftVal = event.pageX - (width / 2) + &quot;px&quot;;
            topVal = event.pageY - (height) + &quot;px&quot;;
            $(&#39;#folderRClickMenu&#39;).css({ left: leftVal, top: topVal }).show();

        }
    });

But the browser for this element still pops up the default menu (copy/paste/properties etc).  Any way to disable this?  I&#39;ve tried return false but not luck.

Jquery/JS prevent right click menu in browsers

The right-click context menus of the source editor, the project items and the solution item, is getting ridiculously long, and two of them even have scrolling now on my 1680x1050 screen.

Is there any way for me to hide items on these menus, even if I have to add an event to my Visual Studio macro-system and find and hide them manually?

Here&#39;s examples, many of these items I **never** use:

![context menus][1]

**Edit1:** The current answer + comments suggest I should use the Customize menu item in the toolbar context menus, go to the second tab, Commands, and use the Context Menus radio selection and find the relevant menus there.

Here are 3, which are suggested by comments:

![customize context menus][2]

As you can see, they&#39;re all empty.

**Edit2:** After clicking the &quot;Reset All&quot; button in that dialog, for the Solution and Project menus, I got items in the dialog, that I could edit, but the changes did not affect the actual context menu on either a project or the solution file. Also, after restarting Visual Studio, the dialog contents for those two were again empty.

  [1]: http://i.stack.imgur.com/DvDfW.png
  [2]: http://i.stack.imgur.com/TEDIy.png

Hide items in the right-click context menus in Visual Studio 2010 (08)?

How can I get the JFrame in which a JPanel is living?

My current solution is to ask the panel for it&#39;s parent (and so on) until I find a Window:

    Container parent = this; // this is a JPanel
    do {
        parent = parent.getParent();
    } while (!(parent instanceof Window) &amp;&amp; parent != null);
    if (parent != null) {
        // found a parent Window
    }

Is there a more elegant way, a method in the Standard Library may be?

Content Type	Original Author	Original Content on Stackoverflow
Question	DD.	View Question on Stackoverflow
Solution 1 - Java	barjak	View Answer on Stackoverflow
Solution 2 - Java	Codemwnci	View Answer on Stackoverflow
Solution 3 - Java	Sam Jarman	View Answer on Stackoverflow

Java Mouse Event Right Click

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

Solution 3 - Java

Is there a way to throw an exception without adding the throws declaration?

Export only modified and added files with folder structure in Git

Attributions