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• No long-running conversations - IllegalArgumentException: Stack must not be null

  - by Markos Fragkakis

  Hi all, I have a very simple application with just 2 pages on WebLogic 10.3.2 (11g), Seam 2.2.0.GA. I have a command button in each, which makes a redirect-after-post to the other. This works well, as I see the URL of the current page I am seeing in the address bar. BUT, even though I have no long-running conversations defined, after a random number of clicks, and - I think - after a random number of seconds (~10s - 60s) I get the lovely exception at the end of this post. Now, if I have understood how temporary conversations work when redirecting this happens: When I first see my application, the url is http://localhost:7001/myapp When I click the button in pageA.xhtml, I end up in "pageB.xhtml?cid=26". This is normal because Seam extends the temporary conversation of the first request to last until the renderResponse phase of the redirect. So, it uses the cid (Conversation Id) of the extended temporary conversation to find any propagated parameters. When I click the button in pageB.xhtml, I end up in pageA.xhtml?cid=26 The same cid was given to the new extended temporary conversation. This is normal because the conversation ended at the end of the previous redirect-after-post, and not the number 26 is free to use as a cid. Is this all correct? If yes, why does this happen: If I re-type the applications home address (showing pageA) and re-click, I end up in pageB.xhtml?cid=29, which is a different number than 26. But 26 has ended after the previous RenderResponse phase, befire I re-types the url. Why is it not used instead of 29? So, to sup up, 2 questions: Why do I get the exception, even though I have not started any long-running conversations? What happens exactly with the cid? On what basis does it change? Cheers,

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• Background image in a JFrame.

  - by thepandaatemyface

  Hi, This question has been asked a lot but everywhere the answers fall short. I can get a JFrame to display a background image just fine by extending JPanel and overriding paintComponent, like so: class BackgroundPanel extends JPanel { private ImageIcon imageIcon; public BackgroundPanel() { this.imageIcon = Icons.getIcon("foo"); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawImage(imageIcon.getImage(), 0,0,imageIcon.getIconWidth(),imageIcon.getIconHeight(),this); } } But now, how do you add a component on top of that background? When I go JFrame w = new JFrame() ; Container cp = w.getContentPane(); cp.setLayout(null); BackgroundPanel bg = new BackgroundPanel(); cp.add(bg); JPanel b = new JPanel(); b.setSize(new Dimension(30, 40)); b.setBackground(Color.red); cp.add(b); w.pack() w.setVisible(true) It shows the little red square (or any other component) and not the background, but when I remove cp.setLayout(null);, the background shows up but not my other component. I'm guessing this has something to do with the paintComponent not being called by the null LayoutManager, but I'm not at all familiar with how LayoutManagers work (this is a project for college and the assignment specifically says not to use a LayoutManager) When i make the image the background has to display null (and so, transparant (??)) the red square shows up so it might be that the background is actually above my other components) Does anyone anyone have any ideas? Thanks

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• Macro access to members of object where macro is defined

  - by Marc Grue

  Say I have a trait Foo that I instantiate with an initial value val foo = new Foo(6) // class Foo(i: Int) and I later call a second method that in turn calls myMacro foo.secondMethod(7) // def secondMethod(j: Int) = macro myMacro then, how can myMacro find out what my initial value of i (6) is? I didn't succeed with normal compilation reflection using c.prefix, c.eval(...) etc but instead found a 2-project solution: Project B: object CompilationB { def resultB(x: Int, y: Int) = macro resultB_impl def resultB_impl(c: Context)(x: c.Expr[Int], y: c.Expr[Int]) = c.universe.reify(x.splice * y.splice) } Project A (depends on project B): trait Foo { val i: Int // Pass through `i` to compilation B: def apply(y: Int) = CompilationB.resultB(i, y) } object CompilationA { def makeFoo(x: Int): Foo = macro makeFoo_impl def makeFoo_impl(c: Context)(x: c.Expr[Int]): c.Expr[Foo] = c.universe.reify(new Foo {val i = x.splice}) } We can create a Foo and set the i value either with normal instantiation or with a macro like makeFoo. The second approach allows us to customize a Foo at compile time in the first compilation and then in the second compilation further customize its response to input (i in this case)! In some way we get "meta-meta" capabilities (or "pataphysic"-capabilities ;-) Normally we would need to have foo in scope to introspect i (with for instance c.eval(...)). But by saving the i value inside the Foo object we can access it anytime and we could instantiate Foo anywhere: object Test extends App { import CompilationA._ // Normal instantiation val foo1 = new Foo {val i = 7} val r1 = foo1(6) // Macro instantiation val foo2 = makeFoo(7) val r2 = foo2(6) // "Curried" invocation val r3 = makeFoo(6)(7) println(s"Result 1 2 3: $r1 $r2 $r3") assert((r1, r2, r3) ==(42, 42, 42)) } My question Can I find i inside my example macros without this double compilation hackery?

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• How to persist options selected in AlertDialog spawned from ItemizedOverlay onTap method

  - by ahsteele

  In the description of how to add a list of options to an AlertDialog the official Android documentation alludes to saving a users preferences with one of the "data storage techniques." The examples assume the AlertDialog has been spawned within an Activity class. In my case I've created a class that extends ItemizedOverlay. This class overrides the onTap method and uses an AlertDialog to prompt the user to make a multi-choice selection. I would like to capture and persist the selections for each OverlayItem they tap on. The below code is the onTap method I've written. It functions as written but doesn't yet do what I'd hope. I'd like to capture and persist each selection made by the user to be used later. How do I do that? Is using an AlertDialog in this manner a good idea? Are there better options? protected boolean onTap(int index) { OverlayItem item = _overlays.get(index); final CharSequence[] items = { "WiFi", "BlueTooth" }; final boolean[] checked = { false, false }; AlertDialog.Builder builder = new AlertDialog.Builder(_context); builder.setTitle(item.getTitle()); builder.setMultiChoiceItems(items, checked, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int item, boolean isChecked) { // for now just show that the user touched an option Toast.makeText(_context, items[item], Toast.LENGTH_SHORT).show(); } }); builder.setPositiveButton("Okay", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { // should I be examining what was checked here? dialog.dismiss(); } }); builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); return true; }

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• Hello i am using the android code to connect facebook but getting "Facebook Server Error + 104 - Inc

  - by Shalini Singh

  Hello i am using the android code to connect facebook but getting "Facebook Server Error + 104 - Incorrect signature" exception at the place of onLoginSuccess function. code is given bellow .... public class FacebookConnection extends Activity implements LoginListener { private FBRocket fbRocket; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // You need to put in your Facebook API key here: fbRocket = new FBRocket(this, "test", "e2c8deda78b007466c54f48e6359e02e"); // Determine whether there exists a previously-saved Facebook: if (fbRocket.existsSavedFacebook()) { String str =fbRocket.getAPIKey(); Log.e("Api key", str); fbRocket.loadFacebook(); } else { fbRocket.login(R.layout.main); String str =fbRocket.getAPIKey(); Log.e("Api key", str); } } public void onLoginFail() { fbRocket.displayToast("Login failed!"); fbRocket.login(R.layout.main); } public void onLoginSuccess(Facebook facebook) { fbRocket.displayToast("Login success!******************"); // Set the logged-in user's status: try { facebook.setStatus("I am using Facebook -- it's great!"); String uid = facebook.getFriendUIDs().get(0); // Just get the uid of the first friend returned... fbRocket.displayDialog("Friend's name: " + facebook.getFriend(uid).name); // ... and retrieve this friend's name. } catch (ServerErrorException e) { // Check if the exception was caused by not being logged-in: if (e.notLoggedIn()) { // ...if it was, then login again: fbRocket.login(R.layout.main); } else { System.out.println(e); e.printStackTrace(); } } }

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• Programmatically access the CIL for a .NET type

  - by Jordão

  Is there a straighforward library that I can use to access the CIL for a .NET type? Let me demonstrate what I want the fictitious CilExtractor to do: [Serializable] public class Type_For_Extract_Cil_Test { private int _field = 3; public int Method(int value) { checked { return _field + value; } } } [Test] public void Extract_Cil_For_Type_Test() { string actualCil = CilExtractor.ExtractCil(typeof(Type_For_Extract_Cil_Test)); string expectedCil = @" .class public auto ansi serializable beforefieldinit Type_For_Extract_Cil_Test extends [mscorlib]System.Object { .method public hidebysig specialname rtspecialname instance void .ctor() cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldc.i4.3 L_0002: stfld int32 Type_For_Extract_Cil_Test::_field L_0007: ldarg.0 L_0008: call instance void [mscorlib]System.Object::.ctor() L_000d: ret } .method public hidebysig instance int32 Method(int32 'value') cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldfld int32 Type_For_Extract_Cil_Test::_field L_0006: ldarg.1 L_0007: add.ovf L_0008: ret } .field private int32 _field }"; // indentations and code formatting issues apart, this should succeed Assert.AreEqual(expectedCil, actualCil); } I know I can do this with Mono.Cecil or Reflector, but I also know I have to write a lot of code to achieve this. Since Reflector already does this on its UI, isn't there a simple way to access this functionality, like with a simple method call? Are there other libraries that are better suited to this specific scenario?

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• Servlet receives null from Remote EJB3 Session Bean

  - by Hank

  I'm sure this is a beginner error... So I have a JEE6 application with entities, facades (implementing the persistence layer) and Stateless Session Beans (EJB3) with Remote interfaces (providing access to the entities via facades). This is working fine. Via the SLSB I can retrieve and manipulate entities. Now, I'm trying to do this from a Web Application (deployed on the same Glassfish, entity+interface definitions from JEE app imported as separate jar). I have a Servlet, that receives an instance of the SLSB injected. I get it to retrieve an entity, and the following happens (I can see it in the logs): the remote SLSB gets instantiated, its method called SLSB instantiates the facade, calls the 'get' method facade retrieves object from DB, returns it SLSB returns the object to the caller (all is good until here) calling servlet receives .. null !! What is going wrong? This should work, right? MyServlet: public class MyServlet extends HttpServlet { @EJB private CampaignControllerRemote campaignController; // remote SLSB protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/plain"); PrintWriter out = response.getWriter(); try { Campaign c = campaignController.getCampaign(5L); // id of an existing campaign out.println("Got "+ c.getId()); // c is null !! } finally { out.close(); } } ... } Pls let me know if you want to see other code, and I'll update the post.

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• Multi lined Multi styled button

  - by user1321811

  Hi i'm trying to recreate this button style more specifically the 'view basket' button. waitrose app The button needs to have multiple lines of text each with a different text size and font colour etc. Here's the code so far. I've created the button and its displays correctly but when you click on it the state pressed isn't working. Where am I going wrong. Thanks in advance. xml button file: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" android:state_pressed="true" android:state_focused="true" android:background="@drawable/button_bg" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Some Text" android:state_pressed="false" android:state_focused="false" android:textColor="#ffffff" /> <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Some Text" android:state_pressed="false" android:state_focused="false" android:textColor="#ffffff" /> </LinearLayout> java file code: package com.buttons2; import com.buttons2.R; import android.app.Activity; import android.os.Bundle; import android.widget.Button; public class Buttons2Activity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button = (Button) findViewById(R.id.button1); setContentView(R.layout.button); } }

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• Selenium RC test - IE gives 403 error on Tomcat app, Tomcat root OK

  - by Ed Daniel

  I'm new to Selenium RC, having previously used Selenium IDE and only run tests in Firefox. I'm trying to get a basic test to run using Selenium RC through Eclipse; my test works OK in Firefox, and in Safari now that I've killed the pop-up blocker, but IE8 is causing a SeleniumException to be thrown, containing an "XHR ERROR" with a 403 response: com.thoughtworks.selenium.SeleniumException: XHR ERROR: URL = http://localhost:8080/pims Response_Code = 403 Error_Message = Forbidden at com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97) at com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91) at com.thoughtworks.selenium.DefaultSelenium.open(DefaultSelenium.java:335) at org.pimslims.seleniumtest.FirstTest.testNew(FirstTest.java:32) ... I can do a similar test on http:/ /localhost:8080 (space between the slashes here because SO thinks I'm spamming) and it's fine - I can make IE open that Tomcat default page and click a link. It's only if I try to open my application at http:/ /localhost:8080/pims that I see this error - and only in IE. I can open that URL in IE by typing it into the address bar. I was convinced that there's some setting in IE that's causing this, but I've tried everything I can think of. http:/ /localhost:8080 is in my Trusted Sites, and I've turned the security for that zone down to the minimum, allowed anything that looks related to popups, etc. If I try adding http:/ /localhost:8080/pims/ to Trusted Sites, IE says it's already there. I've also messed around with proxy settings, to no avail, but may have missed something obvious. I've tried starting the test with *iexplore, *iehta, and *iexploreproxy - all behave the same. Is there something I've missed? For reference, here is my test case - this works as is, in Firefox, opening the PIMS application's index page and clicking a link: public class FirstTest extends SeleneseTestCase { @Override public void setUp() throws Exception { this.setUp("http://localhost:8080/", "*firefox"); } public void testNew() throws Exception { final Selenium s = this.selenium; s.open("/pims"); s.click("logInOutLink"); s.waitForPageToLoad("30000"); } } Any help is greatly appreciated!

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• Spring MVC parameter validation

  - by Don

  Hi, I've defined a controller, validator and command class for a Spring 2.5 MVC application like this: public class ResourceController extends AbstractCommandController { private MessageRetriever messageRetriever; protected ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception { ResourceCommand resourceCommand = (ResourceCommand) command; // I NEED TO CHECK HERE IF COMMAND IS VALID? } public static class ResourceCommand { private String module; private String site; private String lang; // GETTERS AND SETTERS OMITTED } public static class ResourceValidator implements Validator { public boolean supports(Class clazz) { return ResourceCommand.class.isAssignableFrom(clazz); } public void validate(Object obj, Errors errors) { ValidationUtils.rejectIfEmptyOrWhitespace(errors, "module", "MODULE_REQUIRED"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "site", "SITE_REQUIRED"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "lang", "LANG_REQUIRED"); } } } I have wired these all together in the application context: <bean id="resourceController" class="com.amadeus.jcp.ui.framework.localization.ResourceController"> <property name="commandClass" value="com.amadeus.jcp.ui.framework.localization.ResourceController.ResourceCommand"/> <property name="validator"> <bean class="com.amadeus.jcp.ui.framework.localization.ResourceController.ResourceValidator"/> </property> </bean> However, I can't figure out how to actually check whether the command is valid or not - I assume the framework calls the validator, but how do I get access to the result? Incidentally, I'm using Java 1.4, so can't use any solutions that require annotations or other Java 1.5 features. Thanks, Don

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• Android ViewPager Displaying TextView in Layout

  - by Ammonious

  I'm having a problem getting my viewpager to work correctly. Currently the bottom part of my layout will page across but the remaining part will not Here's my code that I have in my PageAdapter public class MyPageAdapter extends PagerAdapter { public int getCount() { return 31; } public Object instantiateItem(View collection, int position) { LayoutInflater inflater = (LayoutInflater) collection.getContext() .getSystemService(Context.LAYOUT_INFLATER_SERVICE); int resId = 0; switch (position) { case 0: resId = R.layout.main_menu; break; case 1: resId = R.layout.article1; break; case 2: resId = R.layout.article2; break; .... .... View view = inflater.inflate(resId, null); ((ViewPager) collection).addView(view, 0); return view; This is what I have for my XML <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@drawable/background" android:clickable="true" android:id="@+id/layout13" android:weightSum="0"> <TextView android:id="@+id/textView01" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical|center_horizontal" android:padding="12dp" android:text="@string/article13" android:textAppearance="?android:attr/textAppearanceLarge" android:textColor="#000000" /> <TextView android:id="@+id/textView02" android:layout_width="match_parent" android:layout_height="302dp" android:gravity="center_vertical|center_horizontal" android:text="@string/body13" android:textAppearance="?android:attr/textAppearanceLarge" android:textColor="#000000" /> <android.support.v4.view.ViewPager android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@id/viewPager" > </android.support.v4.view.ViewPager> </LinearLayout> I've tried Moving the around in my XML layout to right underneath my LinearLayout and i get the full screen but all my text disappears. It's probably something simple i'm missing but any help on this would be greatly appreciated!

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• Mock versus Implementation. How to share both approaches in a single Test class ?

  - by Arthur Ronald F D Garcia

  Hi, See the following Mock Test by using Spring/Spring-MVC public class OrderTest { // SimpleFormController private OrderController controller; private OrderService service; private MockHttpServletRequest request; @BeforeMethod public void setUp() { request = new MockHttpServletRequest(); request.setMethod("POST"); Integer orderNumber = 421; Order order = new Order(orderNumber); // Set up a Mock service service = createMock(OrderService.class); service.save(order); replay(service); controller = new OrderController(); controller.setService(service); controller.setValidator(new OrderValidator()); request.addParameter("orderNumber", String.valueOf(orderNumber)); } @Test public void successSave() { controller.handleRequest(request, new MockHttpServletResponse()); // Our OrderService has been called by our controller verify(service); } @Test public void failureSave() { // Ops... our orderNumber is required request.removeAllParameters(); ModelAndView mav = controller.handleRequest(request, new MockHttpServletResponse()); BindingResult bindException = (BindingResult) mav.getModel().get(BindingResult.MODEL_KEY_PREFIX + "command"); assertEquals("Our Validator has thrown one FieldError", bindException.getAllErrors(), 1); } } As you can see, i do as proposed by Triple A pattern Arrange (setUp method) Act (controller.handleRequest) Assert (verify and assertEquals) But i would like to test both Mock and Implementation class (OrderService) by using this single Test class. So in order to retrieve my Implementation, i re-write my class as follows @ContextConfiguration(locations="/app.xml") public class OrderTest extends AbstractTestNGSpringContextTests { } So how should i write my single test to Arrange both Mock and Implementation OrderService without change my Test method (sucessSave and failureSave) I am using TestNG, but you can show in JUnit if you want regards,

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• How to retrieve a pixel in a tiff image (loaded with JAI)?

  - by Ed Taylor

  I'm using a class (DisplayContainer) to hold a RenderedOp-image that should be displayed to the user: RenderedOp image1 = JAI.create("tiff", params); DisplayContainer d = new DisplayContainer(image1); JScrollPane jsp = new JScrollPane(d); // Create a frame to contain the panel. Frame window = new Frame(); window.add(jsp); window.pack(); window.setVisible(true); The class DisplayContainer looks like this: import java.awt.event.MouseEvent; import java.awt.geom.AffineTransform; import javax.media.jai.RenderedOp; import com.sun.media.jai.widget.DisplayJAI; public class DisplayContainer extends DisplayJAI { private static final long serialVersionUID = 1L; private RenderedOp img; // Affine tranform private final float ratio = 1f; private AffineTransform scaleForm = AffineTransform.getScaleInstance(ratio, ratio); public DisplayContainer(RenderedOp img) { super(img); this.img = img; addMouseListener(this); } public void mouseClicked(MouseEvent e) { System.out.println("Mouseclick at: (" + e.getX() + ", " + e.getY() + ")"); // How to retrieve the RGB-value of the pixel where the click took // place? } // OMISSIONS } What I would like to know is how the RGB value of the clicked pixel can be obtained?

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• listView dynamic add item

  - by pengwang

  hello,I used ListView to dynamic add item,but there is a problem about not Smooth add. there are textView and button in my listActivity,Iwant to Press button ,then textView"s text can auto add to listView,but i Pressed button ,it donot work,unless after i enter content , press "OK"Key ,then Pressed button ,textView"s text can auto add to listView. I donot know why. if I continuous Pressed button ,as3 times, then press "Ok"Key ,the content auto add list View but 3 times. public class DynamicListItems extends ListActivity { private static final String ITEM_KEY = "key"; ArrayList<HashMap<String, String>> list= new ArrayList<HashMap<String, String>>(); private SimpleAdapter adapter; private EditText newValue;@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.dynamic_list); newValue = (EditText) findViewById(R.id.new_value_field); setListAdapter(new SimpleAdapter(this, list, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value })); ((ImageButton) findViewById(R.id.button)).setOnClickListener(getBtnClickListener()); } private OnClickListener getBtnClickListener() { return new OnClickListener() { public void onClick(View view) { try { HashMap<String, String> item = new HashMap<String, String>(); item.put(ITEM_KEY, newValue.getText().toString()); list.add(item); adapter.notifyDataSetChanged(); } catch (NullPointerException e) { Log.i("[Dynamic Items]", "Tried to add null value"); } } }; }} my another question is how to dynamic delete the item,which event i need to used,could you give me some directions or Code snippets? dynamic_list.xml only contains listView ,button,textView row.xml contains TextView . i amm sorry i donot edit code together.

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• How to get the stacktrace in a mobile device?

  - by Daniel Moura

  I'm getting a NullPointerException in a Nokia S40. I want to know what is causing this exception. The device shows: NullPointerException java/lang/NullPointerException This error only occurs in the device, running in the emulator the application works fine. I use microlog to debug my application. But the application works fine if the log is enabled. Is there a way to get the stack trace when I get this NullPointerException? I don't need all details like the line number just which method cause this exception. UPDATE: I installed the same application in another Nokia S40 and the same error didn't occur. Nokia 2660 - error Nokia 6131 - no error UPDATE 2: Somehow I find what was causing the NullPointerException. import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Graphics; public class OuterClass extends Canvas { private Config config; public OuterClass() { this.config = new Config(); } public void paint(Graphics graphics) { HelperClass helper = new HelperClass(this.config); helper.doStuff(); } public void dispose() { this.config = null; } public class Config implements IConfig { public int getSomething() { // ... } } } public class HelperClass { private IConfig config; public HelperClass(IConfig) { this.config = config; } public doStuff() { config.getSomething(); // Here is thrown NullPointerException } } In some situations a thread is started and call the OuterClass.dispose() before the helper.doStuff() causing the NPE. I think when I enabled the log it made the thread slower and helper.doStuff() was called when I expected it to be called.

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• question about joGL (glTexImage2D)

  - by Nour

  Hi everybody I was trying to load a texture using joGL library but it seems that something is missing when using this method glTexImage2D at : IOStream wdis = new IOStream(fileName); wdis.skipBytes(18); int width = wdis.readIntW(); // dis.skipBytes(2); int height = wdis.readIntW(); // dis.skipBytes(2); wdis.skipBytes(28); byte buf[] = new byte[wdis.available()]; wdis.read(buf); wdis.close(); gl.glBindTexture(GL.GL_TEXTURE_2D, BMPtextures[index]); gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 3, width, height, 0, GL.GL_BGR, GL.GL_UNSIGNED_BYTE, buf); gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR); gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR); as IOStream is a class that extends DataInputStream it shows a message that glTexImage2D(int,int,int,int,int,int,int,int,byte[]) is not found at javax.media.opengl.GL I couldn't figure the problem her because it's an open source code and it seems to work perfectly with my friends but unfortunately not with me even though we are using the same library and the same JDK version what shall I do ??

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• Zend Framework: How to start PHPUnit testing Forms?

  - by Andrew

  I am having trouble getting my filters/validators to work correctly on my form, so I want to create a Unit test to verify that the data I am submitting to my form is being filtered and validated correctly. I started by auto-generating a PHPUnit test in Zend Studio, which gives me this: <?php require_once 'PHPUnit/Framework/TestCase.php'; /** * Form_Event test case. */ class Form_EventTest extends PHPUnit_Framework_TestCase { /** * @var Form_Event */ private $Form_Event; /** * Prepares the environment before running a test. */ protected function setUp () { parent::setUp(); // TODO Auto-generated Form_EventTest::setUp() $this->Form_Event = new Form_Event(/* parameters */); } /** * Cleans up the environment after running a test. */ protected function tearDown () { // TODO Auto-generated Form_EventTest::tearDown() $this->Form_Event = null; parent::tearDown(); } /** * Constructs the test case. */ public function __construct () { // TODO Auto-generated constructor } /** * Tests Form_Event->init() */ public function testInit () { // TODO Auto-generated Form_EventTest->testInit() $this->markTestIncomplete( "init test not implemented"); $this->Form_Event->init(/* parameters */); } /** * Tests Form_Event->getFormattedMessages() */ public function testGetFormattedMessages () { // TODO Auto-generated Form_EventTest->testGetFormattedMessages() $this->markTestIncomplete( "getFormattedMessages test not implemented"); $this->Form_Event->getFormattedMessages(/* parameters */); } } so then I open up terminal, navigate to the directory, and try to run the test: $ cd my_app/tests/unit/application/forms $ phpunit EventTest.php Fatal error: Class 'Form_Event' not found in .../tests/unit/application/forms/EventTest.php on line 19 So then I add a require_once at the top to include my Form class and try it again. Now it says it can't find another class. I include that one and try it again. Then it says it can't find another class, and another class, and so on. I have all of these dependencies on all these other Zend_Form classes. What should I do? How should I go about testing my Form to make sure my Validators and Filters are being attached correctly, and that it's doing what I expect it to do. Or am I thinking about this the wrong way?

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• Is it a good practice to suppress warnings?

  - by Chris Cooper

  Sometimes while writing Java in Eclipse, I write code that generates warnings. A common one is this, which I get when extending the Exception class: public class NumberDivideException extends Exception { public NumberDivideException() { super("Illegal complex number operation!"); } public NumberDivideException(String s) { super(s); } } // end NumberDivideException The warning: The serializable class NumberDivideException does not declare a static final serialVersionUID field of type long. I know this warning is caused by my failure to... well, it says right above. I could solve it by including the serialVersionUID, but this is a one hour tiny assignment for school; I don't plan on serializing it anytime soon... The other option, of course, is to let Eclipse add @SuppressWarnings("serial"). But every time my mouse hovers over the Suppress option, I feel a little guilty. For programming in general, is it a good habit to suppress warnings? (Also, as a side question, is adding a "generated" serialVersionUID like serialVersionUID = -1049317663306637382L; the proper way to add a serialVersionUID, or do I have to determine the number some other way?)

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• Use Maven to trigger a wsgen & wsimport in a row, using wsdlLocation

  - by ben

  I have hard times using maven to generate my client. So Please refer to http://stackoverflow.com/questions/2131001/creating-a-web-service-client-directly-from-the-source for the first part of my question. To keep it simple and short, I want to go from here (a file in src/main/java) : package com.example.maven.jaxws.helloservice; import javax.jws.WebService; @WebService public class Hello { public String sayHello(String param) { ; return "Hello " + param; } } to there : /** * This class was generated by the JAX-WS RI. * JAX-WS RI 2.1.7-b01- * Generated source version: 2.1 * */ @WebServiceClient(name = "HelloService", targetNamespace = "http://helloservice.jaxws.maven.example.com/", wsdlLocation = "http://localhost:8080/test/") public class HelloService extends Service { private final static URL HELLOSERVICE_WSDL_LOCATION; private final static Logger logger = Logger.getLogger(com.example.wsimport.HelloService.class.getName()); ...etc using only 1 pom.xml file. Please note the wsdlLocation set on the end. The pom.xml file will probably use both maven-jaxws-plugin wsgen AND wsimport with some tricky configuration to achieve this.

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• BroadcastReceiver not receiving an alarm's broadcast

  - by juanjux

  I have a code that sets a new repeating alarm (on production I'll use a inexactRepeating), but the BroadCastReceiver I've registered for handling it is not being called. Here is the code where I set the alarm: newAlarmPeriod = 5000; // For debugging Intent alarmIntent = new Intent(this, GroupsCheckAlarmReceiver.class); PendingIntent sender = PendingIntent.getBroadcast(this, Constants.CHECK_ALARM_CODE, alarmIntent, 0); AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + newAlarmPeriod, newAlarmPeriod, sender); It seems to work and it triggers and alarm every five seconds, as seen in the output of "adb shell dumpsys alarm": DUMP OF SERVICE alarm: Current Alarm Manager state: Realtime wakeup (now=1269941046923): RTC_WAKEUP #1: Alarm{43cbac58 type 0 android} type=0 when=1269997200000 repeatInterval=0 count=0 operation=PendingIntent{43bb1738: PendingIntentRecord{43bb1248 android broadcastIntent}} RTC_WAKEUP #0: Alarm{43ce30e0 type 0 com.almarsoft.GroundhogReader} type=0 when=1269941049555 repeatInterval=5000 count=1 operation=PendingIntent{43d990c8: PendingIntentRecord{43d49108 com.almarsoft.GroundhogReader broadcastIntent}} RTC #1: Alarm{43bfc250 type 1 android} type=1 when=1269993600000 repeatInterval=0 count=0 operation=PendingIntent{43c5a618: PendingIntentRecord{43c4f048 android broadcastIntent}} RTC #0: Alarm{43d67dd8 type 1 android} type=1 when=1269941100000 repeatInterval=0 count=0 operation=PendingIntent{43c4e0f0: PendingIntentRecord{43c4f6c8 android broadcastIntent}} Broadcast ref count: 0 Alarm Stats: android 24390ms running, 0 wakeups 80 alarms: act=android.intent.action.TIME_TICK flg=0x40000004 com.almarsoft.GroundhogReader 26ms running, 2 wakeups 2 alarms: flg=0x4 cmp=com.almarsoft.GroundhogReader/.GroupsCheckAlarmReceiver But for some reason my BroadCastReceiver is not being called when the alarm is triggered. I've declared it on the Manifest: <receiver android:name=".GroupsCheckAlarmReceiver" /> And this is the abbreviated code: public class GroupsCheckAlarmReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context, "XXX Alarm worked.", Toast.LENGTH_LONG).show(); Log.d("XXX", "GroupsCheckAlarmReceiver.onReceive"); }

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• GPS on emulator doesn't get the geo fix - Android

  - by MaurizioPz

  Hi I'm developing an application for the android OS, I'm just starting, but I can't get the GPS on the emulator to work. I've read on the internet that you need to send a geo fix to the emulator in order to enable the gps locationProvider. I'm both using the DDMS and telnet to try to send it, but logcat never tells me the it recived a new fix, and my apolication still sees the gps as disabled here's my code package eu.mauriziopz.gps; import java.util.Iterator; import java.util.List; import android.app.Activity; import android.content.Context; import android.location.LocationManager; import android.os.Bundle; import android.util.Log; public class ggps extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); LocationManager l =(LocationManager) getSystemService(Context.LOCATION_SERVICE); List<String> li = l.getAllProviders(); for (Iterator<String> iterator = li.iterator(); iterator.hasNext();) { String string = iterator.next(); Log.d("gps", string); } if (l.getLastKnownLocation("gps")==null) Log.d("gps", "null"); } } I've read that the DDMS may not work properly on a non english OS, but telnet should work! update: the gps is enabled in the settings

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• add JButton into frame with JTable

  - by Edan

  hello, I would like to know how to put a button inside a frame that contain JTable inside. (The button should not be inside a cell, but after the table ends) Here is the example code I wrote so far: class SimpleTableExample extends JFrame { // Instance attributes used in this example private JPanel topPanel; private JTable table; private JScrollPane scrollPane; private JButton update_Button; // Constructor of main frame public SimpleTableExample() { // Set the frame characteristics setTitle("Add new item" ); setSize(300, 200); setBackground( Color.gray ); // Create a panel to hold all other components topPanel = new JPanel(); topPanel.setLayout( new BorderLayout() ); getContentPane().add( topPanel ); // Create columns names String columnNames[] = {"Item Description", "Item Type", "Item Price"}; // Create some data String dataValues[][] = {{ "0", "Entree", "0" }}; // Create a new table instance table = new JTable( dataValues, columnNames ); //////////////////////////// JComboBox item_Type_Combobox = new JComboBox(); item_Type_Combobox = new JComboBox(item_Type.values()); TableColumn column = table.getColumnModel().getColumn(1); column.setCellEditor(new DefaultCellEditor(item_Type_Combobox)); //////////////////////////// // Add the table to a scrolling pane scrollPane = new JScrollPane( table ); topPanel.add( scrollPane, BorderLayout.CENTER ); } } How do I add button after the table I created? thanks in advance

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• Is it possible to handle User Defined Exception using JAX WS Dispatch API ?

  - by snowflake

  Hello, I'm performing dynamic webservices call using following code snippet: JAXBContext jc = getJAXBContext(requestClass, responseClass, jaxbContextExtraClasses); Dispatch<Object> dispatch = service.createDispatch(portQName, jc, Service.Mode.PAYLOAD); Object requestValue = getRequestValue(requestClass, pOrderedParameters); JAXBElement<?> request = new JAXBElement(new QName(serviceQNameStr, pOperationName), requestValue.getClass(), null, requestValue); Object tmpResponse = dispatch.invoke(request); Invocation works perfectly, except if I add a user defined exception on the service (a basic UserException extends java.lang.Exception). First I get: javax.xml.bind.UnmarshalException: unexpected element (uri:"http://schemas.xmlsoap.org/soap/envelope/", local:"Fault"). Expected elements are <{http://my.namespace/}myMethod,<{http://my.namespace/}myResponse Then I added the UserException_Exception JAX-WS generated type to my JAXB Context, and then get: Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions java.lang.StackTraceElement does not have a no-arg default constructor. this problem is related to the following location: at java.lang.StackTraceElement at public java.lang.StackTraceElement[] java.lang.Throwable.getStackTrace() at java.lang.Throwable at java.lang.Exception Only solution available I found are: dispatch directly a Soap message and handle Soap fault directly (this is the way Jboss JAX-WS implementation performs a standard JAX-WS call using services interfaces). This is not an available solution for me, I want to use a high level implementation (the more I get close to Soap message the less dynamic my code can be) usage of JAXBRIContext.ANNOTATION_READER, which is implementation specific and not an available solution for me, in order to annotate annotates java.lang.Exception as @XmlTransient The service with a user defined exception performs well using the JAX-WS generated standard client stubs and using a tool such Soap UI. Problem occurs in deserialization of the message when I have no user defined exception artifact in the JAXB context, and during invocation when I add those non JAXB compatible artifacts in the JAXB context. I'm usign Jboss WS webservice stack within Jboss 4.2.3.GA Any elegant solution to this problem is welcomed !

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• Illegal start of expression?

  - by Fraser

  I'm trying to build a simple Android app that increments a number displayed every time a button is pressed, but I can't work out how to fix the "illegal start of expression" error I keep getting. My code: package com.clicker; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class Clicker extends Activity { private int clickerNumber = 0; private TextView clickerText; private Button clickerButton; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); clickerText = (TextView)findViewById(R.id.clickerText); final Button clickerButton = (Button)findViewById(R.id.clickerButton); clickerButton.setOnClickListener(new View.OnClickListener()); { public void onClick(); { clickerNumber = clickerNumber++; clickerText.setText(Integer.toString(clickerNumber)); } } } } And compiler output: compile: [javac] Compiling 2 source files to /home/fraser/Applications/Android/Code/Clicker/bin/classes [javac] /home/fraser/Applications/Android/Code/Clicker/src/com/clicker/Clicker.java:24: ')' expected [javac] clickerButton.setOnClickListener(new View.OnClickListener(); [javac] ^ [javac] /home/fraser/Applications/Android/Code/Clicker/src/com/clicker/Clicker.java:26: illegal start of expression [javac] public void onClick(); [javac] ^ [javac] /home/fraser/Applications/Android/Code/Clicker/src/com/clicker/Clicker.java:26: illegal start of expression [javac] public void onClick(); [javac] ^ [javac] /home/fraser/Applications/Android/Code/Clicker/src/com/clicker/Clicker.java:26: ';' expected [javac] public void onClick(); [javac] ^ [javac] /home/fraser/Applications/Android/Code/Clicker/src/com/clicker/Clicker.java:29: ';' expected [javac] clickerText.setText(Integer.toString(clickerNumber))); [javac] ^ [javac] 5 errors

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• Binary Search Tree in Java

  - by John R

  I want to make a generic BST, that can be made up of any data type, but i'm not sure how I could add things to the tree, if my BST is generic. All of my needed code is below. I want my BST made up of Locations, and sorted by the x variable. Any help is appreciated. Major thanks for looking. public void add(E element) { if (root == null) root = element; if (element < root) add(element, root.leftChild); if (element > root) add(element, root.rightChild); else System.out.println("Element Already Exists"); } private void add(E element, E currLoc) { if (currLoc == null) currLoc = element; if (element < root) add(element, currLoc.leftChild); if (element > root) add(element, currLoc.rightChild); else System.out.println("Element Already Exists); } Other Code public class BinaryNode<E> { E BinaryNode; BinaryNode nextBinaryNode; BinaryNode prevBinaryNode; public BinaryNode() { BinaryNode = null; nextBinaryNode = null; prevBinaryNode = null; } } public class Location<AnyType> extends BinaryNode { String name; int x,y; public Location() { name = null; x = 0; y = 0; } public Location(String newName, int xCord, int yCord) { name = newName; x = xCord; y = yCord; } public int equals(Location otherScene) { return name.compareToIgnoreCase(otherScene.name); } }

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