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  • Can't remove JPanel from JFrame while adding new class into it

    - by A.K.
    Basically, I have my Frame class, which instantiates all the properties for the JFrame, and draws a JLabel with an image (my title screen). Then I made a separate JPanel with a start button on it, and made a mouse listener that will allow me to remove these objects while adding in a new Board() class (Which paints the main game). *Note: The JLabel is SEPARATE from the JPanel, but it still gets moved to the side by it. Problem: Whenever I click the button though, it only shows a little square of what I presume is my board class trying to run. Code below for the Frame Class: package OurPackage; //Made By A.K. 5/24/12 //Contains Frame. import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.GridBagLayout; import java.awt.GridLayout; import java.awt.Image; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.*; import javax.swing.plaf.basic.BasicOptionPaneUI.ButtonActionListener; public class Frame implements MouseListener { public static boolean StartGame = false; ImageIcon img = new ImageIcon(getClass().getResource("/Images/ActionJackTitle.png")); ImageIcon StartImg = new ImageIcon(getClass().getResource("/Images/JackStart.png")); public Image Title; JLabel TitleL = new JLabel(img); public JPanel panel = new JPanel(); JButton StartB = new JButton(StartImg); JFrame frm = new JFrame("Action-Packed Jack"); public Frame() { TitleL.setPreferredSize(new Dimension(1200, 420)); frm.add(TitleL); frm.setLayout(new GridBagLayout()); frm.add(panel); panel.setSize(new Dimension(220, 45)); panel.setLayout(new GridBagLayout ()); panel.add(StartB); StartB.addMouseListener(this); StartB.setPreferredSize(new Dimension(220, 45)); frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frm.setSize(1200, 420); frm.setVisible(true); frm.setResizable(false); frm.setLocationRelativeTo(null); } public static void main(String[] args) { new Frame(); } public void mouseClicked(MouseEvent e) { StartB.setContentAreaFilled(false); panel.remove(StartB); frm.remove(panel); frm.remove(TitleL); //frm.setLayout(null); frm.add(new Board()); //Add Game "Tiles" Or Content. x = 1200 frm.validate(); System.out.println("Hit!"); } @Override public void mouseEntered(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mouseExited(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mousePressed(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mouseReleased(MouseEvent arg0) { // TODO Auto-generated method stub } }

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  • Parallel Class/Interface Hierarchy with the Facade Design Pattern?

    - by Mike G
    About a third of my code is wrapped inside a Facade class. Note that this isn't a "God" class, but actually represents a single thing (called a Line). Naturally, it delegates responsibilities to the subsystem behind it. What ends up happening is that two of the subsystem classes (Output and Timeline) have all of their methods duplicated in the Line class, which effectively makes Line both an Output and a Timeline. It seems to make sense to make Output and Timeline interfaces, so that the Line class can implement them both. At the same time, I'm worried about creating parallel class and interface structures. You see, there are different types of lines AudioLine, VideoLine, which all use the same type of Timeline, but different types of Output (AudioOutput and VideoOutput, respectively). So that would mean that I'd have to create an AudioOutputInterface and VideoOutputInterface as well. So not only would I have to have parallel class hierarchy, but there would be a parallel interface hierarchy as well. Is there any solution to this design flaw? Here's an image of the basic structure (minus the Timeline class, though know that each Line has-a Timeline): NOTE: I just realized that the word 'line' in Timeline might make is sound like is does a similar function as the Line class. They don't, just to clarify.

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  • java.lang.NoClassDefFoundError: Could not initialize class org.apache.poi.POIXMLDocument on Jboss 5.0 EAP

    - by nidhin
    Getting following exception in Jboss 5.0 EAP but it work fine in JBoss 5.1 GA. we are using POI 3.7 and jars included are poi-3.7.jar poi-ooxml-schemas.jar poi-ooxml.jar The stack trace is ERROR [org.apache.catalina.core.ContainerBase.[jboss.ueb].[localhost].[fesbcon-Fig].[Faces Servlet]] 3;13;44.4g3pM (http-0.0.0.0-8280-1) Servlet.service() -For servlet Faces Servlet threu exception java.lang.NoClassDe-FFoundError: Could not initialize class org.apache.poi.POIXMLDocument at org.apache.poi.ss.usermodel.HorkbookFactory.create(HorkbookFactory.java:62) at com.-Ferguson.esb.con-Fig.controller.AssociationsExcelUploadController.submit(Unknoun Source) at sun.re-Flect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.re-Flect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.re-Flect.DelegatingMethodAccessorImpl.invoke(Delegating?ethodAccessorImpl.java:25) at java.lang.re-Flect.Method.invoke(Method.java:597) at org.apache.my-Faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:132) at org.apache.my-Faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:61) Please Advise how to solve this issue in JBoss 5.0 EAP

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  • Java Runtime.getRuntime().exec() alternatives

    - by twilbrand
    I have a collection of webapps that are running under tomcat. Tomcat is configured to have as much as 2 GB of memory using the -Xmx argument. Many of the webapps need to perform a task that ends up making use of the following code: Runtime runtime = Runtime.getRuntime(); Process process = runtime.exec(command); process.waitFor(); ... The issue we are having is related to the way that this "child-process" is getting created on Linux (Redhat 4.4 and Centos 5.4). It's my understanding that an amount of memory equal to the amount tomcat is using needs to be free in the pool of physical (non-swap) system memory initially for this child process to be created. When we don't have enough free physical memory, we are getting this: java.io.IOException: error=12, Cannot allocate memory at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) at java.lang.ProcessImpl.start(ProcessImpl.java:65) at java.lang.ProcessBuilder.start(ProcessBuilder.java:452) ... 28 more My questions are: 1) Is it possible to remove the requirement for an amount of memory equal to the parent process being free in the physical memory? I'm looking for an answer that allows me to specify how much memory the child process gets or to allow java on linux to access swap memory. 2) What are the alternatives to Runtime.getRuntime().exec() if no solution to #1 exists? I could only think of two, neither of which is very desirable. JNI (very un-desirable) or rewriting the program we are calling in java and making it it's own process that the webapp communicates with somehow. There has to be others. 3) Is there another side to this problem that I'm not seeing that could potentially fix it? Lowering the amount of memory used by tomcat is not an option. Increasing the memory on the server is always an option, but seems like more a band-aid. Servers are running java 6.

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  • Illegal Character when trying to compile java code

    - by muckdog12
    I have a program that allows a user to type java code into a rich text box and then compile it using the java compiler. Whenever I try to compile the code that I have written I get an error that says that I have an illegal character at the beginning of my code that is not there. This is the error the compiler is giving me: C:\Users\Travis Michael>"\Program Files\Java\jdk1.6.0_17\bin\javac" Test.java Test.java:1: illegal character: \187 n++public class Test ^ Test.java:1: illegal character: \191 n++public class Test ^ 2 errors

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  • createSQLXML() AbstractMethodError (with DB2XADataSource?)

    - by Mike
    Environment: WASCE 2.0.0.4 (aka geronimo 2.1) db2jcc4.jar 4.3.85 (tried 4.8.x as well) tranql-connector-db2-xa 1.4 (tried 1.5 as well) SQLXML xml = c.createSQLXML(); Struggling with java.lang.AbstractMethodError: java/sql/ResultSet.getSQLXML(I)Ljava/sql/SQLXML; at [snip] at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56) at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406) at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555) at org.apache.geronimo.tomcat.valve.ThreadCleanerValve.invoke(ThreadCleanerValve.java:40) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:736) It happens the connection handle is acquired via JNDI only. Works fine with the connection handle is acquired the traditional way. I made sure it is not a jar/version/classloading issue. got hints?

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  • Java Web Service - Faulty Services - ClassNotFound Exception

    - by Epitaph
    My Project has 2 java files (A.java and B.java in same package). A.java uses methods in B.java. And, an external jar has been added in the project build path. In order to create a web service (bottom up) from the class, I created a new Dynamic Web Project in Eclipse with axis2 as the runtime platform, and imported A.java and B.java source files. Next, since all my methods that need to be exposed are contained in A.java, I right click on it and created web service using the standard settings. When I deploy the web service on my apache, I get "Fault Service" and a few ClassNotFound Exceptions for some of the classes in my external jar file (I have already imported it as an external jar). Does the external jar needs to be imported in another way?

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  • Client-side policy error using JacORB (Java/CORBA) with SSL

    - by jason
    I'm trying to add SSL to an existing CORBA app, and I keep getting this error: org.omg.CORBA.NO_PERMISSION: Client-side policy requires SSL/TLS, but server doesn't support it vmcid: 0x0 minor code: 0 completed: No at org.jacorb.orb.iiop.ClientIIOPConnection.checkSSL(ClientIIOPConnection.java:535) at org.jacorb.orb.iiop.ClientIIOPConnection.connect(ClientIIOPConnection.java:144) at org.jacorb.orb.giop.GIOPConnection.sendMessage(GIOPConnection.java:835) at org.jacorb.orb.giop.GIOPConnection.sendRequest(GIOPConnection.java:805) at org.jacorb.orb.giop.ClientConnection.sendRequest(ClientConnection.java:302) at org.jacorb.orb.giop.ClientConnection.sendRequest(ClientConnection.java:282) at org.jacorb.orb.Delegate.invoke_internal(Delegate.java:919) at org.jacorb.orb.Delegate.invoke(Delegate.java:868) at org.jacorb.orb.Delegate.is_a(Delegate.java:1268) at org.omg.CORBA.portable.ObjectImpl._is_a(ObjectImpl.java:112) at databridge.autogen.ILoginManagerHelper.narrow(ILoginManagerHelper.java:57) at databridge.test.Client.main(Client.java:59) I have generated keystores for both client and server and exchanged the keys between the two. Using this setup, I can get the demo application that came in the JacORB download to run successfully. The only difference I can tell is that my test is using the Tie method to get the POA. There are some policies that go into that, but I can't find any information on what policies need to go in there to enable SSL, if any. I'm not even sure that's the problem as the JacORB demo doesn't set any policies on the server or poa. When I run the -Djavax.net.debug=ssl, I can see the keystores load up the trusted certs on both the client and the server. I'm just not sure what policies are being referred to here, but it's odd that the demo works and the test doesn't using the exact same keystores and properties. I've emailed the mailing list, but I'm not holding out much hope as that doesn't seem to be very active. Any help would be greatly appreciated. Below are my properties files. Server Props: jacorb.security.support_ssl=on jacorb.security.ssl.server.supported_options=60 jacorb.security.ssl.server.required_options=20 jacorb.ssl.socket_factory=org.jacorb.security.ssl.sun_jsse.SSLSocketFactory jacorb.ssl.server_socket_factory=org.jacorb.security.ssl.sun_jsse.SSLServerSocketFactory jacorb.security.keystore=dbserver.jks jacorb.security.keystore_password=dbsslserver_pass jacorb.security.jsse.trustees_from_ks=on jacorb.security.jsse.log.verbosity=4 jacorb.implname=StandardImplName client props jacorb.security.support_ssl=on jacorb.security.ssl.client.supported_options=60 jacorb.security.ssl.client.required_options=20 jacorb.ssl.socket_factory=org.jacorb.security.ssl.sun_jsse.SSLSocketFactory jacorb.security.keystore=dbclient.jks jacorb.security.keystore_password=dbsslclient_pass jacorb.security.jsse.trustees_from_ks=on jacorb.security.jsse.log.verbosity=4 jacorb.implname=StandardImplName

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  • Error when calling javascript method from applet

    - by khue
    Hi, I am trying to call javascript method from an Applet using netscapte.java.JSObject. in the applet: JSObject window = JSObject.getWindow(this.Class); Object[] args = .... //arguments window.call("javascriptMethodName", args); But I get the exception at window.call: JavaScript error while calling "callFromJava" netscape.javascript.JSException: JavaScript error while calling "callFromJava" at sun.plugin2.main.client.MessagePassingJSObject.newJSException(Unknown Source) at sun.plugin2.main.client.MessagePassingJSObject.waitForReply(Unknown Source) at sun.plugin2.main.client.MessagePassingJSObject.call(Unknown Source) at TextBoxApplet.jButton1_actionPerformed(TextBoxApplet.java:57) at TextBoxApplet.access$000(TextBoxApplet.java:16) at TextBoxApplet$1.actionPerformed(TextBoxApplet.java:36) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) The JSObject is NOT null. Have anyone encountered this ? Thanks a lot.

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  • Calling matlab callback/function handle from Java

    - by jakob
    How do I pass a matlab function handle to a Java object and invoke it from within Java (that is, I want Java to tell matlab when it is ready with a calculation). I am trying to use the com.mathworks.jmi.Matlab class for evaluating Matlab expressions in the Java object, but I can't see how to 1) transfer the callback funcktion handle to Java, and 2) invoke it from Java possibly using the com.mathworks.jmi.Matlab class. Thanks, jakob

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  • Jsystem AutoITAgent does not work - java.lang.NoClassDefFoundError: org/apache/xmlrpc/WebServer

    - by lasombra
    Even so the jar files exists and are in the correct folder, I get the NoClassDefFoundError. Why? What I am doing wrong? The Classpath definition is .\thirdparty\lib\;C:\jsystem\runner\lib\ant-jsystem.jar;C:jsystem\runner\lib\cli.jar;C:\jsystem\runner\lib\commons-logging-1.1.jar;C:\jsystem\runner\lib\embeddedCatalina.jar;C:\jsystem\runner\lib\fileParser.jar;C:\jsystem\runner\lib\filetransfer.jar;C:\jsystem\runner\lib\j2autoit.jar;C:\jsystem\runner\lib\jsystem-launcher.jar;C:\jsystem\runner\lib\jsystemAgent.jar;C:\jsystem\runner\lib\jsystemApp.jar;C:\jsystem\runner\lib\jsystemCommon.jar;C:\jsystem\runner\lib\jsystemCore.jar;C:\jsystem\runner\lib\snmp.jar;C:\jsystem\runner\lib\stations.jar;C:\jsystem\runner\lib\swing.jar;C:\jsystem\runner\lib\tcl.jar;C:\jsystem\runner\lib\vbshell.jar;C:\jsystem\runner\lib\web.jar;C:\jsystem\runner\lib\wget.jar; C:\jsystem\runner\lib\xmlrpc-client-3.1.3.jar; C:\jsystem\runner\lib\xmlrpc-common-3.1.3.jar; C:\jsystem\runner\lib\xmlrpc-server-3.1.3.jar; C:\jsystem\runner\lib\j2autoit\j2autoit.jar C:\jsystem\runner Setting J2AutoIt Agent to use the port: 8888 Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/xmlrpc/WebServer at com.jsystem.j2autoit.AutoItAgent.startAutoItWebServer(AutoItAgent.java:665) at com.jsystem.j2autoit.AutoItAgent.main(AutoItAgent.java:348) Caused by: java.lang.ClassNotFoundException: org.apache.xmlrpc.WebServer 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.ClassLoader.loadClassInternal(Unknown Source) ... 2 more

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  • Retrieving image from database using Ajax

    - by ama
    I'm trying to read image from database with Ajax, but I could not read the xmlhttp.responseText to the img src. The image is saved as binary data in database and also retrieved as binary data. I'm using Ajax in JSP, because I want to give the user the ability to upload images and I will view the last uploaded image, on mouse over action the Ajax will be activated and get the image back, the problem is in reading the img from the response. This is the Ajax function: function ajaxFunction(path) { if (xmlhttp) { var s = path; xmlhttp.open("GET", s, true); xmlhttp.onreadystatechange = handleServerResponse; xmlhttp.send(null); } } function handleServerResponse() { if (xmlhttp.readyState == 4) { var Image = document.getElementById(Image_Element_Name); document.getElementById(Image_Element_Name).src = "data:" + xmlhttp.responseText; } } I also got exception in the server: 10415315 [TP-Processor1] WARN core.MsgContext - Error sending end packet java.net.SocketException: Broken pipe at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:537) at org.apache.jk.common.JkInputStream.endMessage(JkInputStream.java:127) at org.apache.jk.core.MsgContext.action(MsgContext.java:302) at org.apache.coyote.Response.action(Response.java:183) at org.apache.coyote.Response.finish(Response.java:305) at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:281) at org.apache.catalina.connector.Response.finishResponse(Response.java:478) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:154) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) at java.lang.Thread.run(Thread.java:619) 10415316 [TP-Processor1] WARN common.ChannelSocket - processCallbacks status 2

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  • How one extends JNA interface mappings? (Java)

    - by rukoche
    User32 interface (platform library) is missing some WinAPI functions, so I tried extending it: package myapp import com.sun.jna.platform.win32.W32API public interface User32 extends com.sun.jna.platform.win32.User32 { myapp.User32 INSTANCE boolean IsWindow(W32API.HWND hWnd) } But then calling myapp.User32.INSTANCE.FindWindow(..) results in java.lang.NullPointerException: Cannot invoke method FindWindow() on null object

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  • Problem calling Java from PHP script

    - by Jack
    I am working on windows. I am running PHP (5.1.3) scripts on Tomcat using PHP/Java bridge. Here is my simple code //test.php <?php require_once("java\Java.inc"); $systemInfo = new Java("Test"); print $systemInfo->foo(); ?> Test.class is in the same folder as test.php. But the php file is not able to locate the test class and I get the following error - Fatal error: Uncaught [[o:Exception]:"java.lang.Exception: CreateInstance failed: new Test. If I use a standard class like below. It works - <?php require_once("java\Java.inc"); $systemInfo = new Java("java.lang.System"); print "Total seconds since January 1, 1970: ".$systemInfo->currentTimeMillis(); ?> What should I do? 1)Should I copy my class to the standard location where all Java classes are kept. (What is this location?) 2) Do some changes in the php.ini file

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  • Spring AOP pointcut that matches annotation on interface

    - by seanizer
    Hello, this is my first post here, so I apologize in advance for any stupidity on my side. I have a service class implemented in Java 6 / Spring 3 that needs an annotation to restrict access by role. I have defined an annotation called RequiredPermission that has as its value attribute one or more values from an enum called OperationType: public @interface RequiredPermission { /** * One or more {@link OperationType}s that map to the permissions required * to execute this method. * * @return */ OperationType[] value();} public enum OperationType { TYPE1, TYPE2; } package com.mycompany.myservice; public interface MyService{ @RequiredPermission(OperationType.TYPE1) void myMethod( MyParameterObject obj ); } package com.mycompany.myserviceimpl; public class MyServiceImpl implements MyService{ public myMethod( MyParameterObject obj ){ // do stuff here } } I also have the following aspect definition: /** * Security advice around methods that are annotated with * {@link RequiredPermission}. * * @param pjp * @param param * @param requiredPermission * @return * @throws Throwable */ @Around(value = "execution(public *" + " com.mycompany.myserviceimpl.*(..))" + " && args(param)" + // parameter object " && @annotation( requiredPermission )" // permission annotation , argNames = "param,requiredPermission") public Object processRequest(final ProceedingJoinPoint pjp, final MyParameterObject param, final RequiredPermission requiredPermission) throws Throwable { if(userService.userHasRoles(param.getUsername(),requiredPermission.values()){ return pjp.proceed(); }else{ throw new SorryButYouAreNotAllowedToDoThatException( param.getUsername(),requiredPermission.value()); } } The parameter object contains a user name and I want to look up the required role for the user before allowing access to the method. When I put the annotation on the method in MyServiceImpl, everything works just fine, the pointcut is matched and the aspect kicks in. However, I believe the annotation is part of the service contract and should be published with the interface in a separate API package. And obviously, I would not like to put the annotation on both service definition and implementation (DRY). I know there are cases in Spring AOP where aspects are triggered by annotations one interface methods (e.g. Transactional). Is there a special syntax here or is it just plain impossible out of the box. PS: I have not posted my spring config, as it seems to be working just fine. And no, those are neither my original class nor method names. Thanks in advance, Sean PPS: Actually, here is the relevant part of my spring config: <aop:aspectj-autoproxy proxy-target-class="false" /> <bean class="com.mycompany.aspect.MyAspect"> <property name="userService" ref="userService" /> </bean>

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  • Oracle java 6 on ubuntu

    - by Shanee
    The java library I need (jpcap) only works on java 6, it won't work with java 7 (and I have tried :( ), is it still possible to install java 6 on ubuntu? Only according to https://help.ubuntu.com/community/Java#Choosing_the_default_Java_to_use, 'Oracle (Sun) Java 6 is no longer available to be distributed by Ubuntu, because of license issues' I've tried to use the instructions on the same site but they don't seem to work... "./jre-6u34-linux-i586.bin" doesn't seem to do anything! Thanks!

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  • How to store an object in Riak with the Java client?

    - by Jonas
    I have setup Riak on a Ubuntu machine, and it seam to work if I do riak ping. Now I would like to use the Riak Java client to store an object, but it doesn't work. I get com.basho.riak.client.response.RiakIORuntimeException when I try to store an object. What am I doing wrong? Is there a way to test if I can access riak from my java client? Do I have to create a Bucket first? how? import com.basho.riak.client.RiakClient; import com.basho.riak.client.RiakObject; import com.basho.riak.client.response.FetchResponse; public class RiakTest { public static void main(String[] args) { // connect RiakClient riak = new RiakClient("http://192.168.1.107:8098/riak"); // create object RiakObject o = new RiakObject("mybucket", "mykey", "myvalue"); // store riak.store(o); } }

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  • Java UnknownFormatConversionException

    - by user1672458
    The code below is throwing this error, and I'm not sure why. It's clearly a problem with outputting String.format to the str variable, but I don't know what's wrong with it. Exception in thread "main" java.util.UnknownFormatConversionException: Conversion = 'i' at java.util.Formatter$FormatSpecifier.conversion(Unknown Source) at java.util.Formatter$FormatSpecifier.<init>(Unknown Source) at java.util.Formatter.parse(Unknown Source) at java.util.Formatter.format(Unknown Source) at java.util.Formatter.format(Unknown Source) at java.lang.String.format(Unknown Source) at Donor.toString(Donor.java:41) at Donor.main(Donor.java:65) - import java.util.Scanner; public class Donor { public String name; public int age; public double donation; Donor() { //Initialized to these values for debugging name = "NoName"; age = 0; donation = 0; } Donor(String nameinit, int ageinit, double donationinit) { name = nameinit; age = ageinit; donation = donationinit; } public String toString() { String str = ""; str = String.format("%s-30%i-6$%d-20", name, age, donation); return str; } public static void main(String[] args) { Scanner input = new Scanner(System.in); String nameinit = null; int ageinit = -1; double donationinit = -1; String outp = null; System.out.print("Enter the donor's name: "); nameinit = input.nextLine(); System.out.print("Enter the donor's age: "); ageinit = input.nextInt(); System.out.print("Enter the donation amount: "); donationinit = input.nextDouble(); Donor d = new Donor(nameinit, ageinit, donationinit); outp = d.toString(); System.out.printf("%s30 %s6 %s10", "Name", "Age", "Donation"); System.out.print("\n" + outp); input.close(); } }

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  • Compiling a bunch of stuff in the folder (java, on a mac)

    - by David
    two questions: how do i compile a .java file that isn't on my username (like something in documents or some other sub folder) if i have multiple .java files and i compile one that contains method that are contained in the others does the compiler compile those other files. heres an example of the second question. example1.java: class example1 { main () { example2.method () } } example2.java: class example2 { method () } When i compile example1.java will example2.java also be compiled?

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  • Questions every good Java/J2EE Developer should be able to answer?

    - by Rachel
    I was going through Questions every good .Net developer should be able to answer and was highly impressed with the content and approach of this question, and so in the same spirit, I am asking this question for Java/J2EE Developer. What questions do you think should a good Java/J2EE programmer be able to answer? I am marking this question as community wiki as it is not user specific and it aims to serve programming community at large. Looking forward for some amazing responses. EDIT: Please answer questions too, as suggested in the comments, so that people could learn something new regarding the language, too.

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  • Blackberry Widget vs Java SDK

    - by rithanyalaxmi
    Hi, I am a newbie to this forum,I was going through the documents of both Blackberry Widget and Java SDK. I have the following doubts to get clarified:- 1) Advantages and disadvantages of Java SDK and Widget SDK? 2) When to go for Java SDK and Widget SDK? 3) Both Java and Widget applications require the latest blackberry OS 5.0? OR whether they are compatible with the lower versions as well? 4) Whatever developed with Java SDK can be done with widget SDK? similarly the vice-versa? 5) Is it possible to create the .java classes for Widget application development? 6) Whether all the blackberry models supports both Java and Widget ? 7) What are the Databases the blackberry Java and Widget supports? Please do shed some light into this as i was unable to find a suitable documentation on these. Thanks, Rithu

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  • What web server should I use if I want to run Java code behind?

    - by Boaz
    At the moment, I have lot's of Java which does all kind of nifty stuff and I'm happy with it. The code is command line driven which have been great so far, but I recently decided I want to make the functionality available through web-services. Since my is complex and I'm happy with the way it's written , I don't want go through the pain of porting it to other languages. So I set out on a google journey to find out what web servers exist (on a Linux machine, though it's interesting to hear the answer without that limitation). From what I could find, it seems that there are two viable options: Apache Tomcat and Sun Java Server. What are the reason to choose one on top of the other? what are the strength of each and what are the weaknesses? Or, perhaps, there is a third one which is much easier, flexible and less cumbersome. Anyone?

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  • What happens when several Java servlet apps running on the same port ?

    - by Frank
    Something strange happened to my servlets and I think I've figured out why, yet I'm more confused. I used Netbean6.7 to develop a Paypal IPN (Instant Payment Notification) message servlet, it listens on port 8080 by default for Paypal IPN messages. I used some sample Java code from it's web site, but when it ran, only about 1 in 10 messages came through, and they looked correct, but why 1 in 10 ? Not 100% or none ? So I asked some questions here and got some advices, one in particular points me to Google's App Engine, so I downloaded it and ran the demo guestbook while my IPN servlet is still running on Netbeans, the strange thing happened, after I entered "appengine-java-sdk-1.3.2\bin\dev_appserver.cmd appengine-java-sdk-1.3.2\demos\guestbook\war" from the command prompt, I went to the following url on my browser "http://localhost:8080/", I thought I would see the Google demo guestbook page, NO, what I saw was another servlet I developed 2 years ago : "Web Academy", online course registration app. How can that happen ? I never started it, and I haven't touch that project for years. I guess because it's also listening on port 8080, so now I understand why the IPN messages only came through 1 in 10 times, because another servlet was also listening on that port and could have got the messages intended for IPN, or some how those two servlets' processes mixed up and therefore couldn't respond to Paypal properly, and failed. In order to verify some of my guesses, I turn off Netbeans, and ran the Google guestbook again at the prompt, this time on my browser http://localhost:8080/ points to the demo guestbook page. My Urls look like this : [A] Paypal IPN : http://localhost:8080/PayPal_App/PayPal_Servlet [B] Web Academy : http://localhost:8080/ So now, my questions are : <1> Why the "Web Academy" servlet was auto started when I ran the Paypal servlet ? <2> If I change the IPN listening port to 8083, would that mean I can run both of them on my PC at the same time without affecting each other ? <3> But I still don't understand, [A] and [B] look different, if a page for [A] is refreshed, it should show the Paypal content, and another page looking at [B] should show the Web Academy content, and that's exactly what happens when I started Netbeans to run the Paypal servlet, both pages show their respective content correctly side by side without interfering with each other, how come the IPN messages couldn't get through 100% of the time ? <4> In Netbeans how to assign 8080 to servlet [A] and assign port 8083 to servlet [B] ? <5> How to turn off auto start of Web Academy by Netbeans ?

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  • I have got this error : Failed to create InitialContext using factory specified in hashtable

    - by user85121
    I just want to add a servlet in web.xml, like this : <servlet> <display-name>AxisJMSServlet</display-name> <servlet-name>JMSListener</servlet-name> <servlet-class>com.sinosoft.prpall.web.jms.JMSListenServlet</servlet-class> <load-on-startup>110</load-on-startup> </servlet> Everything is just fine, and when i started my programs, I got this : javax.naming.NoInitialContextException: Failed to create InitialContext using factory specified in hashtable [Root exception is java.lang.NullPointerException] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:258) at javax.naming.InitialContext.initializeDefaultInitCtx(InitialContext.java:318) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:348) at javax.naming.InitialContext.internalInit(InitialContext.java:286) at javax.naming.InitialContext.<init>(InitialContext.java:211) at org.apache.axis.components.jms.JNDIVendorAdapter.getConnectionFactory(JNDIVendorAdapter.java:85) at org.apache.axis.components.jms.JNDIVendorAdapter.getQueueConnectionFactory(JNDIVendorAdapter.java:55) at org.apache.axis.transport.jms.JMSConnectorFactory.createConnector(JMSConnectorFactory.java:227) at org.apache.axis.transport.jms.JMSConnectorFactory.createServerConnector(JMSConnectorFactory.java:156) at com.sinosoft.prpall.web.jms.JMSListenServlet.init(JMSListenServlet.java:60) at javax.servlet.GenericServlet.init(GenericServlet.java:241) at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:283) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:64) at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58) at weblogic.servlet.internal.StubLifecycleHelper.<init>(StubLifecycleHelper.java:48) at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:539) at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1981) at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1955) at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1874) Can anybody tell me what is going on ?

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