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  • Matrix camera, movement concept

    - by NoFace
    I was talking to some guy. He said that my movement concept in game is bad. When left or right arrow is pressed I'm scrolling background what makes you feel that player is moving (player's X remains same). So... he told me something about matrix view. I should create all walls and platforms static and scroll only the camera and move player's rectangle. I did a little research in Google, but nothing found. Can you tell me anything about it? How to start? Maybe links, books and resources? My programming language is Java (2d). Thank you!

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  • Cost vs. Fun - Dilemma about learning a serverside language [closed]

    - by Ixx
    I want to learn a new server-side language. I already know Java. I'm fascinated by Scala, have read about it a lot, and want to get practical experience. But I also have some concerns of practical nature - I want to do the backend for many small, non-profit apps, and pay the lowest price for hosting possible. I also want that other people can easily contribute to these apps, if applicable. This leads me in PHP's direction. But I don't like PHP and would like to use these small projects to learn Scala instead. You see the problem, I don't want to pay more money each month, from my own pocket, for hosting. But I want to use these projects to learn Scala. Is there a practical solution for this?

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  • Any tips/tricks/resources on actually TEACHING a class on OOP? [closed]

    - by Sempus
    I may slowly be getting into teaching an Object-Orientated Programming class at my school in a year or two. I just graduated and work at my school as an Application Programmer. I'd first start off as a TA/grader and then slowly move into the Professor role. The class would be in Java. I always see resources on this fine site about HOW to program, but does anyone know any tips/tricks/resources on how to TEACH a programming class? It would be full of all different skills levels(but still semi-technical) so it would have to be a little more understandable than if it was just CS kids.

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  • How can I avoid the engineering mistakes of PDT?

    - by ashy_32bit
    As a developer with enough experience to evaluate a tool, I may say that PDT is very huge in size and slow in performance for a PHP IDE. It gets bigger by release and exponentially slower by the size of the projects. Add some extra syntax coloring rules and it literally crawls, code completion works randomly and building workspace takes like forever. Java black magic (-Xmx etc) eases the pain a little but that's it. So my questions are: Why is PDT like this? What design or engineering factors led to its poor performance? How can I avoid making these same mistakes in my own products?

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  • How to create a manager class without global variables nor singletons?

    - by Omega
    I would like to implement some kind of manager class in my application. It will be in charge of loading textures, processing them, distributing them etc... At first, I wanted to make a global variable that simply contains an instance of my manager class. I found this question: http://stackoverflow.com/questions/4646577/global-variables-in-java. However, the users there seem to recommend to never use global variables. Fine then, I once heard about Singletons, so I though I could use that instead. I mean, creating just one instance of my manager class sounds good. However, I found this other question: When is Singleton appropriate?, which basically tells me that Singletons are, in most scenarios, some kind of anti-pattern. Now I am a bit lost - what other approach can I take to create my manager class, whose only requirement is to be accessible from anywhere?

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  • how to enrich my programming background? [on hold]

    - by city
    I am not sure whether I post my question in right place. I am a master student in computer science and I will graduate next year.Recently, I failed in an interview. Because (at least I think) the interviewer did not think my background strong enough although I finished 5 courses projects and currently working on other 2 projects in graduate school. It seems that nowadays, recruiters like these candidates who finish some projects out of school/work. So I wanna enrich my background. So, I hope you guys recommend some java/C++ projects to me, which I can finish in two or three months. And it would be better if concurrency programming or other fancy skills are needed.

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  • Custom JComponent not displaying in Custom JPanel

    - by Trizicus
    I've tried the add() method but nothing is displayed when I try to add Test to GraphicsTest. How should I be adding it? Can someone show me? I've included the code I'm using. import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JComponent; public class Test extends JComponent { Test() { setOpaque(false); setBackground(Color.white); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g.create(); g2d.setColor(Color.red); g2d.drawString("Hello", 50, 50); g2d.dispose(); } } import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.geom.Rectangle2D; import javax.swing.JPanel; public class GraphicsTest extends JPanel implements MouseListener { private Graphics2D g2d; private String state; private int x, y; GraphicsTest() { add(new Test()); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); g2d = (Graphics2D) g; g2d.setColor(Color.BLACK); g2d.drawString("STATE: " + state, 5, 15); g2d.drawString("Mouse Position: " + x + ", " + y, 5, 30); g2d.setColor(Color.red); Rectangle2D r2d = new Rectangle2D.Double(x, y, 10, 10); g2d.draw(r2d); g2d.dispose(); } public void setState(String state) { this.state = state; } public String getState() { return state; } public void setX(int x) { this.x = x; repaint(); } public void setY(int y) { this.y = y; repaint(); } public void mouseClicked(MouseEvent e) {} public void mousePressed(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} }

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  • Memory Leak Issue in Weblogic, SUN, Apache and Oracle classes Options

    - by Amit
    Hi All, Please find below the description of memory leaks issues. Statistics show major growth in the perm area (static classes). Flows were ran for 8 hours , Heap dump was taken after 2 hours and at the end. A growth in Perm area was identified Statistics show from our last run 240MB growth in 6 hour,40mb growth every hour 2GB heap –can hold ¾ days ,heap will be full in ¾ days Heap dump show –growth in area as mentioned below JMS connection/session Area Apache org.apache.xml.dtm.DTM[] org.apache.xml.dtm.ref.ExpandedNameTable$ExtendedType org.jdom.AttributeList org.jdom.Content[] org.jdom.ContentList org.jdom.Element SUN * ConstantPoolCacheKlass * ConstantPoolKlass * ConstMethodKlass * MethodDataKlass * MethodKlass * SymbolKlass byte[] char[] com.sun.org.apache.xml.internal.dtm.DTM[] com.sun.org.apache.xml.internal.dtm.ref.ExtendedType java.beans.PropertyDescriptor java.lang.Class java.lang.Long java.lang.ref.WeakReference java.lang.ref.SoftReference java.lang.String java.text.Format[] java.util.concurrent.ConcurrentHashMap$Segment java.util.LinkedList$Entry Weblogic com.bea.console.cvo.ConsoleValueObject$PropertyInfo com.bea.jsptools.tree.TreeNode com.bea.netuix.servlets.controls.content.StrutsContent com.bea.netuix.servlets.controls.layout.FlowLayout com.bea.netuix.servlets.controls.layout.GridLayout com.bea.netuix.servlets.controls.layout.Placeholder com.bea.netuix.servlets.controls.page.Book com.bea.netuix.servlets.controls.window.Window[] com.bea.netuix.servlets.controls.window.WindowMode javax.management.modelmbean.ModelMBeanAttributeInfo weblogic.apache.xerces.parsers.SecurityConfiguration weblogic.apache.xerces.util.AugmentationsImpl weblogic.apache.xerces.util.AugmentationsImpl$SmallContainer weblogic.apache.xerces.util.SymbolTable$Entry weblogic.apache.xerces.util.XMLAttributesImpl$Attribute weblogic.apache.xerces.xni.QName weblogic.apache.xerces.xni.QName[] weblogic.ejb.container.cache.CacheKey weblogic.ejb20.manager.SimpleKey weblogic.jdbc.common.internal.ConnectionEnv weblogic.jdbc.common.internal.StatementCacheKey weblogic.jms.common.Item weblogic.jms.common.JMSID weblogic.jms.frontend.FEConnection weblogic.logging.MessageLogger$1 weblogic.logging.WLLogRecord weblogic.rjvm.BubblingAbbrever$BubblingAbbreverEntry weblogic.rjvm.ClassTableEntry weblogic.rjvm.JVMID weblogic.rmi.cluster.ClusterableRemoteRef weblogic.rmi.internal.CollocatedRemoteRef weblogic.rmi.internal.PhantomRef weblogic.rmi.spi.ServiceContext[] weblogic.security.acl.internal.AuthenticatedSubject weblogic.security.acl.internal.AuthenticatedSubject$SealableSet weblogic.servlet.internal.ServletRuntimeMBeanImpl weblogic.transaction.internal.XidImpl weblogic.utils.collections.ConcurrentHashMap$Entry Oracle XA Transaction oracle.jdbc.driver.Binder[] oracle.jdbc.driver.OracleDatabaseMetaData oracle.jdbc.driver.T4C7Ocommoncall oracle.jdbc.driver.T4C7Oversion oracle.jdbc.driver.T4C8Oall oracle.jdbc.driver.T4C8Oclose oracle.jdbc.driver.T4C8TTIBfile oracle.jdbc.driver.T4C8TTIBlob oracle.jdbc.driver.T4C8TTIClob oracle.jdbc.driver.T4C8TTIdty oracle.jdbc.driver.T4C8TTILobd oracle.jdbc.driver.T4C8TTIpro oracle.jdbc.driver.T4C8TTIrxh oracle.jdbc.driver.T4C8TTIuds oracle.jdbc.driver.T4CCallableStatement oracle.jdbc.driver.T4CClobAccessor oracle.jdbc.driver.T4CConnection oracle.jdbc.driver.T4CMAREngine oracle.jdbc.driver.T4CNumberAccessor oracle.jdbc.driver.T4CPreparedStatement oracle.jdbc.driver.T4CTTIdcb oracle.jdbc.driver.T4CTTIk2rpc oracle.jdbc.driver.T4CTTIoac oracle.jdbc.driver.T4CTTIoac[] oracle.jdbc.driver.T4CTTIoauthenticate oracle.jdbc.driver.T4CTTIokeyval oracle.jdbc.driver.T4CTTIoscid oracle.jdbc.driver.T4CTTIoses oracle.jdbc.driver.T4CTTIOtxen oracle.jdbc.driver.T4CTTIOtxse oracle.jdbc.driver.T4CTTIsto oracle.jdbc.driver.T4CXAConnection oracle.jdbc.driver.T4CXAResource oracle.jdbc.oracore.OracleTypeADT[] oracle.jdbc.xa.OracleXAResource$XidListEntry oracle.net.ano.Ano oracle.net.ns.ClientProfile oracle.net.ns.ClientProfile oracle.net.ns.NetInputStream oracle.net.ns.NetOutputStream oracle.net.ns.SessionAtts oracle.net.nt.ConnOption oracle.net.nt.ConnStrategy oracle.net.resolver.AddrResolution oracle.sql.CharacterSet1Byte we are using Oracle BEA Weblogic 9.2 MP3 JDK 1.5.12 Oracle versoin 10.2.0.4 (for oracle we found one path which is needed to applied to avoid XA transaction memory leaks). But we are stuck to resolve SUN, BEA Weblgogic and Apache leaks. please suggest... regards, Amit J.

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  • Error while using PowerMockito.whenNew()

    - by Ankush
    I am using PowerMockito(1.3.6) with Mockito(1.8.3) and Junit(4.7) for testing. I am quite stuck on an error: [junit] Testcase: testNextPNRFromQueueHappyPath(com.orbitz.galileo.host.robot.GalpoQueueConnectionTest): Caused an ERROR [junit] org/mockito/internal/IMockHandler [junit] java.lang.NoClassDefFoundError: org/mockito/internal/IMockHandler [junit] at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.createNewSubsituteMock(DefaultConstructorExpectationSetup.java:80) [junit] at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.withArguments(DefaultConstructorExpectationSetup.java:48) [junit] at com.orbitz.galileo.host.robot.GalpoQueueConnectionTest.testNextPNRFromQueueHappyPath(GalpoQueueConnectionTest.java:62) [junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [junit] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [junit] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) My class under test : GalpoQueueConnection is basically creating a new object of another class : QueueReadBuilder. I am trying to do something like: @RunWith(PowerMockRunner.class) @PrepareForTest({GalpoQueueConnection.class, ApolloProcUtils.class}) public class GalpoQueueConnectionTest extends TestCase{ @Test public void testNextPNRFromQueueHappyPath() throws Exception { QueueReadBuilder mockBuilder = mock(QueueReadBuilder.class); PowerMockito.whenNew(QueueReadBuilder.class).withArguments(anyString(), anyString(), anyString()).thenReturn(mockBuilder); } } It seems like somehow powermockito is trying to call IMockHandler, and I looked at Mockito 1.8.3 api, and there isn't any. Any suggestions/ clues would be welcome.

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  • Problem in Eclipse 3.5 and ubuntu 9.10

    - by ki0
    Someone knows why eclipse close when i click any button. This is because when i try to do something, update eclipse or whatever, eclipse close and it gives me this log... # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007fc329864f7a, pid=9392, tid=140476827293968 # # JRE version: 6.0_16-b01 # Java VM: Java HotSpot(TM) 64-Bit Server VM (14.2-b01 mixed mode linux-amd64 ) # Problematic frame: # C [libpango-1.0.so.0+0x24f7a] pango_layout_new+0x2a # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # I think it is something about java, anyone has any solution?¿ Thanks

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  • Eclipse Error On Startup

    - by GuyNoir
    Eclipse was running fine last night, but this morning I tried starting it up and I came upon this error: Here's the log !SESSION 2010-04-07 17:58:37.208 ----------------------------------------------- eclipse.buildId=I20080617-2000 java.version=1.6.0_13 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US Command-line arguments: -os win32 -ws win32 -arch x86 !ENTRY org.eclipse.osgi 4 0 2010-04-07 17:58:37.457 !MESSAGE Startup error !STACK 1 java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at org.eclipse.osgi.storagemanager.StorageManager.updateTable(StorageManager.java:512) at org.eclipse.osgi.storagemanager.StorageManager.open(StorageManager.java:694) at org.eclipse.osgi.internal.baseadaptor.BaseStorage.initFileManager(BaseStorage.java:208) at org.eclipse.osgi.internal.baseadaptor.BaseStorage.initialize(BaseStorage.java:142) at org.eclipse.osgi.baseadaptor.BaseAdaptor.initializeStorage(BaseAdaptor.java:124) at org.eclipse.osgi.framework.internal.core.Framework.initialize(Framework.java:180) at org.eclipse.osgi.framework.internal.core.Framework.<init>(Framework.java:152) at org.eclipse.osgi.framework.internal.core.OSGi.createFramework(OSGi.java:90) at org.eclipse.osgi.framework.internal.core.OSGi.<init>(OSGi.java:31) at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:286) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:175) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504) at org.eclipse.equinox.launcher.Main.run(Main.java:1236) Any help? I really need this up and running, and reinstalling and resetting all of my plugins and settings just isn't an option at the moment.

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  • Activity has leaked window that was originally added

    - by Pentium10
    What's this error, why happens? 05-17 18:24:57.069: ERROR/WindowManager(18850): Activity com.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here 05-17 18:24:57.069: ERROR/WindowManager(18850): android.view.WindowLeaked: Activity ccom.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.view.ViewRoot.<init>(ViewRoot.java:231) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.view.Window$LocalWindowManager.addView(Window.java:424) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.Dialog.show(Dialog.java:239) 05-17 18:24:57.069: ERROR/WindowManager(18850): at com.mypkg.myP$PreparePairingLinkageData.onPreExecute(viewP.java:183) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.os.AsyncTask.execute(AsyncTask.java:391) 05-17 18:24:57.069: ERROR/WindowManager(18850): at com.mypkg.myP.onCreate(viewP.java:94) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2544) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.ActivityThread.access$2200(ActivityThread.java:126) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.os.Handler.dispatchMessage(Handler.java:99) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.os.Looper.loop(Looper.java:123) 05-17 18:24:57.069: ERROR/WindowManager(18850): at android.app.ActivityThread.main(ActivityThread.java:4595) 05-17 18:24:57.069: ERROR/WindowManager(18850): at java.lang.reflect.Method.invokeNative(Native Method) 05-17 18:24:57.069: ERROR/WindowManager(18850): at java.lang.reflect.Method.invoke(Method.java:521) 05-17 18:24:57.069: ERROR/WindowManager(18850): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 05-17 18:24:57.069: ERROR/WindowManager(18850): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 05-17 18:24:57.069: ERROR/WindowManager(18850): at dalvik.system.NativeStart.main(Native Method)

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  • Packaging ejb3 swing client

    - by soontobeared
    Hi, I get the "java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFac tory" error while running my packaged ejb3 swing client jar. Here's the stack trace. G:\Courses\OSUMC\Installables\June 5\New>java -jar MetaDB-Client.jar javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interf aces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: o rg.jnp.interfaces.NamingContextFactory] at javax.naming.spi.NamingManager.getInitialContext(Unknown Source) at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source) at javax.naming.InitialContext.init(Unknown Source) at javax.naming.InitialContext.<init>(Unknown Source) at net.massmatrix.metadb.ui.facade.BaseEJBFacade.getInitialContext(BaseE JBFacade.java:26) at net.massmatrix.metadb.ui.facade.UserManagerFacade.getUserManager(User ManagerFacade.java:24) at net.massmatrix.metadb.ui.facade.UserManagerFacade.isUserNameAvailable (UserManagerFacade.java:44) at net.massmatrix.metadb.ui.MainFrame.main(MainFrame.java:269) Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFac tory at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at com.sun.naming.internal.VersionHelper12.loadClass(Unknown Source) ... 8 more Exception in thread "main" java.lang.NullPointerException at net.massmatrix.metadb.ui.facade.UserManagerFacade.isUserNameAvailable (UserManagerFacade.java:44) at net.massmatrix.metadb.ui.MainFrame.main(MainFrame.java:269) Here are my packaged swing client Jar contents:- MetaDB-Client.jar \lib - contains all jboss\client jars \net\.. - contains class files(from both client and server) META-INF MANIFEST.MF jndi.properties Here's my jndi.properties:- java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces java.naming.provider.url=localhost:1099 Here's my MANIFEST.MF:- Manifest-Version: 1.0 Main-Class: net.massmatrix.metadb.ui.MainFrame Class-Path: lib/* Command used to create the jar:- jar cfm MetaDB-Client.jar MANIFEST.MF net\* lib\* jndi.properties What else am i missing ? Thanks.

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  • Problem while reading the File in a eclipse Plugin application

    - by Abhishek Choudhary
    I 've developed an eclipse plugin and in that I have a java file trying to read directories and then populate result accordingly. When I try to run the file from eclipse itself through RunJava application , it gives me proper result but as soon as I try to run the same through Eclipse Application, it is throwing NullPointerException because unable to find the directory. I tried the following ways- Suppose , I have a package as - Package - com.test.abhishek.file.java.TestWork.java Directories - com.test.abhishek.file.java.Dir1 com.test.abhishek.file.java.Dir2 Now in TestWork.java- InputStream is = LGHelpContentView.class.getResourceAsStream("/"+dirName);** The above line is getting failed. How should I keep my directory and where so that it will run as an eclipse plug-in as well.

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  • ActivityThread exception in Android?

    - by Praveen Chandrasekaran
    My Log CAT Value: 05-17 15:16:30.572: ERROR/ActivityThread(17448): Activity com.example.brown.Bru_Maps has leaked IntentReceiver android.net.NetworkConnectivityListener$ConnectivityBroadcastReceiver@432e6360 that was originally registered here. Are you missing a call to unregisterReceiver()? 05-17 15:16:30.572: ERROR/ActivityThread(17448): android.app.IntentReceiverLeaked: Activity com.example.brown.Bru_Maps has leaked IntentReceiver android.net.NetworkConnectivityListener$ConnectivityBroadcastReceiver@432e6360 that was originally registered here. Are you missing a call to unregisterReceiver()? 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$PackageInfo$ReceiverDispatcher.<init>(ActivityThread.java:748) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$PackageInfo.getReceiverDispatcher(ActivityThread.java:576) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiverInternal(ApplicationContext.java:770) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:757) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:751) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:290) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.net.NetworkConnectivityListener.startListening(NetworkConnectivityListener.java:138) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.google.android.maps.MapActivity.onResume(MapActivity.java:232) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1225) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.Activity.performResume(Activity.java:3559) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2838) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2866) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1819) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.os.Handler.dispatchMessage(Handler.java:99) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.os.Looper.loop(Looper.java:123) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.main(ActivityThread.java:4203) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at java.lang.reflect.Method.invokeNative(Native Method) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at java.lang.reflect.Method.invoke(Method.java:521) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at dalvik.system.NativeStart.main(Native Method) What is the Activity Thread Exception in Android? Please Help.

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  • CPU and profiling not supported for remote jvisualvm session

    - by yawn
    When monitoring a remote app (using jstatd) I can neither profile nor monitor cpu consumption. Heap monitoring (provided I do not use G1) works. jvisualvm provides the message "Not supported for this JVM." in the CPU graph window. Is there anything missing in my setup? The google showed up next to no results. The local environment (Mac OS X 10.6): java version "1.6.0_15" Java(TM) SE Runtime Environment (build 1.6.0_15-b03-219) Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02-90, mixed mode) The remote environment (Linux version 2.6.16.27-0.9-smp (gcc version 4.1.0 (SUSE Linux))): java version "1.6.0_16" Java(TM) SE Runtime Environment (build 1.6.0_16-b01) Java HotSpot(TM) 64-Bit Server VM (build 14.2-b01, mixed mode) Local monitoring works as advertised.

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  • Running Hadoop example in psuedo-distributed mode on vm

    - by manas
    I have set-up Hadoop on a OpenSuse 11.2 VM using Virtualbox.I have made the prerequisite configs. I ran this example in the Standalone mode successfully. But in psuedo-distributed mode I get the following error: $./bin/hadoop fs -put conf input 10/04/13 15:56:25 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available 10/04/13 15:56:25 INFO hdfs.DFSClient: Abandoning block blk_-8490915989783733314_1003 10/04/13 15:56:31 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available 10/04/13 15:56:31 INFO hdfs.DFSClient: Abandoning block blk_-1740343312313498323_1003 10/04/13 15:56:37 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available 10/04/13 15:56:37 INFO hdfs.DFSClient: Abandoning block blk_-3566235190507929459_1003 10/04/13 15:56:43 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available 10/04/13 15:56:43 INFO hdfs.DFSClient: Abandoning block blk_-1746222418910980888_1003 10/04/13 15:56:49 WARN hdfs.DFSClient: DataStreamer Exception: java.io.IOException: Unable to create new block. at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2845) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288) 10/04/13 15:56:49 WARN hdfs.DFSClient: Error Recovery for block blk_-1746222418910980888_1003 bad datanode[0] nodes == null 10/04/13 15:56:49 WARN hdfs.DFSClient: Could not get block locations. Source file "/user/max/input/core-site.xml" - Aborting... put: Protocol not available 10/04/13 15:56:49 ERROR hdfs.DFSClient: Exception closing file /user/max/input/core-site.xml : java.net.SocketException: Protocol not available java.net.SocketException: Protocol not available at sun.nio.ch.Net.getIntOption0(Native Method) at sun.nio.ch.Net.getIntOption(Net.java:178) at sun.nio.ch.SocketChannelImpl$1.getInt(SocketChannelImpl.java:419) at sun.nio.ch.SocketOptsImpl.getInt(SocketOptsImpl.java:60) at sun.nio.ch.SocketOptsImpl.sendBufferSize(SocketOptsImpl.java:156) at sun.nio.ch.SocketOptsImpl$IP$TCP.sendBufferSize(SocketOptsImpl.java:286) at sun.nio.ch.OptionAdaptor.getSendBufferSize(OptionAdaptor.java:129) at sun.nio.ch.SocketAdaptor.getSendBufferSize(SocketAdaptor.java:328) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.createBlockOutputStream(DFSClient.java:2873) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2826) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288) Any leads will be highly appreciated.

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  • JPA @TableGenerator shared between multiple entities

    - by Mauricio
    Hi Guys, I have a 'dog' Entitiy with an @Id and a @TableGenerator ... @TableGenerator(table = "seq", name = "dog_gen", pkColumnName = "seq_name", valueColumnName="seq_val") @Id @GeneratedValue(strategy = GenerationType.TABLE, generator = "dog_gen") private Long id; ... Is there a way to reuse the same table generator (dog_gen) in other entity? I want to keep the same id sequence in two independent Entities, say dog=1, dog=2, dog=3, cat=4, cat=5, dog=6 and so on... Both entities don't share a common superclass to implement some kind of inheritance with the id property. If I add the @GeneratedValue( generator="dog_gen") on my cat entity, omitting the @TableGenerator declaration throws an Exception saying it can't find the generator when starting the context. Caused by: org.hibernate.AnnotationException: Unknown Id.generator: dog_gen at org.hibernate.cfg.BinderHelper.makeIdGenerator(BinderHelper.java:413) at org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1795) at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1229) at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:733) at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:498) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:277)

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  • JOGL program does not compile - javac with classpath

    - by user1720523
    I want to run a HelloWorld JOGL programm on the commandline. I downloaded the .jars from jogamp.org and put the gluegen-rt.jar , jogl.all.jar , gluegen-java-src.zip , jogl-java-src.zip , gluegen-rt-natives-macosx-universal.jar , jogl-all-natives-macosx-universal.jar in a directory "jar" in my HelloWorld folder - as described in http://jogamp.org/wiki/index.php/Downloading_and_installing_JOGL . Now I try to compile with javac -classpath "jar/gluegen-rt.jar:jar/jogl.all.jar" HelloWorld.java as described on https://jogamp.org/wiki/index.php/Setting_up_a_JogAmp_project_in_your_favorite_IDE . Then it throws me 14 errors starting with HelloWorld.java:7: package javax.media.opengl does not exist import javax.media.opengl.GL; ^ When I try to compile with absolute paths using javac -classpath "/Users/jonas/Desktop/cool_jogl/helloworld/jar/gluegen-rt.jar:/Users/jonas/Desktop/cool_jogl/helloworld/jar/jogl-all.jar" HelloWorld.java it still throws me 12 errors starting with HelloWorld.java:9: cannot find symbol symbol : class GLCanvas location: package javax.media.opengl import javax.media.opengl.GLCanvas; ^

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  • crawl websites out of java web application without using bin/nutch

    - by Marcel
    hi :) i am trying to using nutch (1.1) without bin/nutch from my (java) mojarra 2.0.2 webapp... i am searching at google for examples, but there are no examples how i can realize this :/ ... i get an exception and the job fails :/ (i think of cause something with hadoop)... here is my code: public void run() throws Exception { final String[] args = new String[] { String.format("%s%s%s%s", JSFUtils.getWebAppRoot(), "nutch", File.separator, DIRECTORY_URLS), "-dir", String.format("%s%s%s%s", JSFUtils.getWebAppRoot(), "nutch", File.separator, DIRECTORY_CRAWL), "-threads", this.preferences.get("threads"), "-depth", this.preferences.get("depth"), "-topN", this.preferences.get("topN"), "-solr", this.preferences.get("solr") }; Crawl.main(args); } and a part of the logging: 10/05/17 10:42:54 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId= 10/05/17 10:42:54 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same. 10/05/17 10:42:54 INFO mapred.FileInputFormat: Total input paths to process : 1 10/05/17 10:42:54 INFO mapred.JobClient: Running job: job_local_0001 10/05/17 10:42:54 INFO mapred.FileInputFormat: Total input paths to process : 1 10/05/17 10:42:55 INFO mapred.MapTask: numReduceTasks: 1 10/05/17 10:42:55 INFO mapred.MapTask: io.sort.mb = 100 java.io.IOException: Job failed! at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1232) at org.apache.nutch.crawl.Injector.inject(Injector.java:211) at org.apache.nutch.crawl.Crawl.main(Crawl.java:124) at lan.localhost.process.NutchCrawling.run(NutchCrawling.java:108) at lan.localhost.main.Index.indexing(Index.java:71) at lan.localhost.bean.FeedingBean.actionStart(FeedingBean.java:25) .... can someone help me or tell me how i can crawling from a java application? i have increased the Xms to 256m and Xmx to 768m, but nothing changed... best regards marcel

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  • Connecting client (on VirtualBox) and server (on localhost) using CORBA - org.omg.CORBA.BAD_PARAM:

    - by yak
    Im working now on simple gui appllication in Java/C++ and CORBA. I want my client on VirtualBox connect to server on localhost. When I have a simple app, like a calc I wrote about earlier its just fine. But when it comes to run client which needs some args witch javas -cp option, Im getting errors. (Theres no such problem when I have both client and server in localhost!) My errors: WARNING: "IOP00100007: (BAD_PARAM) string_to_object conversion failed due to bad scheme name" org.omg.CORBA.BAD_PARAM: vmcid: OMG minor code: 7 completed: No at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.resolver.INSURLOperationImpl.operate(Unknown So urce) at com.sun.corba.se.impl.resolver.ORBInitRefResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(Unknown Source) at ClientConnection.connect(ClientConnection.java:57) at Client.main(Client.java:295) Exception in thread "main" org.omg.CORBA.BAD_PARAM: vmcid: OMG minor code: 7 completed: No at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.resolver.INSURLOperationImpl.operate(Unknown So urce) at com.sun.corba.se.impl.resolver.ORBInitRefResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(Unknown Source) at ClientConnection.connect(ClientConnection.java:57) at Client.main(Client.java:295) make[1]: *** [run] Error 1 ClientConnection.java:57 is a line objRef = clientORB.resolve_initial_references("NameService"); Client.java:295 is a line: ClientConnection.connect(args); A connect method is just an ordinary client-connection corba code. I ran my example: 1) C:\Temp\Client>java -cp .:../Dir1:../Dir2 Client -ORBInitRef NameService =corbaloc::192.168.56.1:2809/NameService Error: Could not find or load main class Client so its even didnt run at all .. 2) with the help of a Makefile: HOST = 192.168.56.1 PORT = 2809 NAMESERVICE = NameService run: java -cp .:../Dir1:../Dir2 Client -ORBInitRef NameService=corbaloc::$(HOST):$(PORT)/$(NAMESERVICE) by typing make run and then I got those error I posted earlier. Whats wrong? I mean, a simple code works fine but gui version doesnt want to ... is there a problem with -cp option? I cant change my apps' dir tree.

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  • Adding info to an exception

    - by NoozNooz42
    I'd like to add information to a stack trace/exception. Basically I've got something like this as of now, which I really like: Exception in thread "main" java.lang.ArithmeticException: / by zero at com.so.main(SO.java:41) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke However I'd like to catch that exception and add additional info to it, while still having the original stack trace. For example, I'd like to have that: Exception in thread "main" CustomException: / by zero (you tried to divide 42 by 0) at com.so.main(SO.java:41) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke So basically I want to catch the ArithmeticException and rethrow, say, a CustomException (adding "you tried to divide 42 by 0" in this example) while still keeping the stacktrace from the original ArithmeticException. What is the correct way to do this in Java? Is the following correct: try { .... } catch (ArithmeticException e) { throw new CustomException( "You tried to divide " + x + " by " + y, e ); }

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  • EntityManagerFactory error on Websphere

    - by neverland
    I have a very weird problem. Have an application using Hibernate and spring.I have an entitymanger defined which uses a JNDI lookup .It looks something like this <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="persistenceUnitName" value="ConfigAPPPersist" /> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="showSql" value="true" /> <property name="generateDdl" value="false" /> <property name="databasePlatform" value="org.hibernate.dialect.Oracle9Dialect" /> </bean> </property> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.WebSphereDataSourceAdapter"> <property name="targetDataSource"> <bean class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="jdbc/pmp" /> </bean> </property> </bean> This application runs fine in DEV. But when we move to higher envs the team that deploys this application does it successfully initially but after a few restarts of the application the entitymanager starts giving this problem Caused by: javax.persistence.PersistenceException: [PersistenceUnit: ConfigAPPPersist] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:677) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:132) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:224) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:291) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1368) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1334) ... 32 more Caused by: org.hibernate.MappingException: **property mapping has wrong number of columns**: com.***.***.jpa.marketing.entity.MarketBrands.$performasure_j2eeInfo type: object Now you would say this is pretty obvious the entity MarketBrands is incorrect. But its not it maps to the table just fine. And the same code works on DEV. Also the jndi cannot be incorrect since it deploys and works fine initially but throws uo this error after a restart. This is weird and not very logical. But if someone has faced this or has any idea on what might be causing this Please!! help The persistence.xml for the persitence unit has very little <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="ConfigAPPPersist"> <!-- commented code --> </persistence-unit> </persistence>

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  • Groovlet not working in GWT project, container : embedded Jetty in google plugin

    - by user325284
    Hi, I am working on a GWT application which uses GWT-RPC. I just made a test groovlet to see if it worked, but ran into some problems here's my groovlet package groovy.servlet; print "testing the groovlet"; Every tutorial said we don't need to subclass anything, and just a simple script would act as a servlet. my web.xml looks like this - <!-- groovy --> <servlet> <servlet-name>testGroovy</servlet-name> <servlet-class>groovy.servlet.testGroovy</servlet-class> </servlet> <servlet-mapping> <servlet-name>testGroovy</servlet-name> <url-pattern>*.groovy</url-pattern> </servlet-mapping When I Run as - web application, i get the following error from jetty : [WARN] failed testGroovy javax.servlet.UnavailableException: Servlet class groovy.servlet.testGroovy is not a javax.servlet.Servlet at org.mortbay.jetty.servlet.ServletHolder.checkServletType(ServletHolder.java:377) at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:234) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:616) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448) at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:447) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:222) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:543) at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421) at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035) at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783) at com.google.gwt.dev.DevMode.main(DevMode.java:275) What did I miss ?

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  • Does form with enctype="multipart/form-data" cause problems accessing a hidden field

    - by Ankur
    I have created a hidden form element <form name="UploadImage" enctype="multipart/form-data" method="post" action="UploadImage"> <label> </label> <input name="imgUploadObjId" id="imgUploadObjId" value="52" type="hidden"> //rest of the form here </form> And I am trying to get the value with this line in a servlet (as I have done before): int objId = Integer.parseInt(request.getParameter("imgUploadObjId")); But I get this (line 33 is the line above): java.lang.NumberFormatException: null java.lang.Integer.parseInt(Unknown Source) java.lang.Integer.parseInt(Unknown Source) web.objects.UploadImage.doPost(UploadImage.java:33) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) Is there something different about a form with enctype="multipart/form-data"? Or can you see some other error.

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