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• Java Object class

  - by SHiNKiROU

  I have a weird Java question: As we know: All Java classes extend java.lang.Object All Java classes cannot extend itself Then, java.lang.Object must extend java.lang.Object, which is itself, therefore, it should be impossible. How is Object implemented in Java?

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• one page has 9 urls. I am looking for 301 auto redirect syntax for multiple urls.

  - by Ali Demirtas

  Hi This is the third time I am asking this question. I am only looking for the syntax of how to solve this problem. I am using prestashop as the cart for my website. I have a problem; the website used to be in dynamic urls. I enabled friendly url writing. The problem is that one page has more than one url. You can access a same page from the dynamic url and static url. In fact a single page has 9 different urls. This obviously creates problems for seo as search engines penalize my website for this. Here are examples of a page with more than 2 urls (http://www.turkishfootballstore.com/lang-nl/product.php?id_product=515) (http://www.turkishfootballstore.com/fenerbahce/515-fenerbahce-thuisshirt-20092010.html) (http://www.turkishfootballstore.com/lang-nl/fenerbahce/515-fenerbahce-thuisshirt-20092010.html) you can see even the static url's have 2 one with language defined and the other without. out fo the three urls above the correct one is the one at the bottom. What can I do to solve this problem? I have no knowledge of programming. Here is the htaccess for the website. Any sample code or help is really appreciated. There is 550 pages and every page is published in 17 different languages I want to use a 301 auto redirect. What is the simplest way to do it? Please only reply if you have the coding for a auto 301 redirect! URL rewriting module activation RewriteEngine on URL rewriting rules RewriteRule ^([a-z0-9]+)-([a-z0-9]+)(-[_a-zA-Z0-9-]*)/([_a-zA-Z0-9-]*).jpg$ /img/p/$1-$2$3.jpg [L,E] RewriteRule ^([0-9]+)-([0-9]+)/([_a-zA-Z0-9-]*).jpg$ /img/p/$1-$2.jpg [L,E] RewriteRule ^([0-9]+)(-[_a-zA-Z0-9-]*)/([_a-zA-Z0-9-]).jpg$ /img/c/$1$2.jpg [L,E] RewriteRule ^lang-([a-z]{2})/([a-zA-Z0-9-])/([0-9]+)-([a-zA-Z0-9-]).html(.)$ /product.php?id_product=$3&isolang=$1$5 [L,E] RewriteRule ^lang-([a-z]{2})/([0-9]+)-([a-zA-Z0-9-]).html(.)$ /product.php?id_product=$2&isolang=$1$4 [L,E] RewriteRule ^lang-([a-z]{2})/([0-9]+)-([a-zA-Z0-9-])(.)$ /category.php?id_category=$2&isolang=$1 [QSA,L,E] RewriteRule ^([a-zA-Z0-9-])/([0-9]+)-([a-zA-Z0-9-]).html(.*)$ /product.php?id_product=$2$4 [L,E] RewriteRule ^([0-9]+)-([a-zA-Z0-9-]).html(.)$ /product.php?id_product=$1$3 [L,E] RewriteRule ^([0-9]+)-([a-zA-Z0-9-])(.)$ /category.php?id_category=$1 [QSA,L,E] RewriteRule ^content/([0-9]+)-([a-zA-Z0-9-])(.)$ /cms.php?id_cms=$1 [QSA,L,E] RewriteRule ^([0-9]+)__([a-zA-Z0-9-])(.)$ /supplier.php?id_supplier=$1$3 [QSA,L,E] RewriteRule ^([0-9]+)_([a-zA-Z0-9-])(.)$ /manufacturer.php?id_manufacturer=$1$3 [QSA,L,E] RewriteRule ^lang-([a-z]{2})/(.*)$ /$2?isolang=$1 [QSA,L,E] Catch 404 errors ErrorDocument 404 /404.php Options +FollowSymLinks RewriteEngine on RewriteCond %{HTTP_HOST} ^.com [NC] RewriteRule ^(.)$ http://www.*.com/$1 [L,R=301] Options +FollowSymLinks RewriteEngine on index.php to / RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /.index.php\ HTTP/ RewriteRule ^(.)index.php$ /$1 [R=301,L] Header set Cache-Control: "no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0"

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• C#: How to Make it Harder for Hacker/Cracker to Get Around or Bypass the Licensing Check?

  - by Peter Lee

  Hi all, Suppose that the user has saved the License file under the Application.StartupPath, where all users can read. And then, every time when the app starts, it will check if it can find and verify the license file. If the app can find and verify, we let the user to continue with full functinalities. If not, we prompt a MessageBox showing "Unlicencsed, continue to use with trial version, functionalities limited." My question is, if I'm a hacker/cracker, I would try to get around or bypass the licensing check instead of cracking the license file, because, if we use RSA signature, it's very difficult to crack a license file. So where should we put the license check? thanks. Merry Christmas and Happy New Year! Peter P.S.: and also, is it safe if I put a global variable IsLicensed (true / false) to limit the functionalities? Is it easy for a hacker to change IsLicensed = true?

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• NoClassDefFoundError without any class name

  - by Safder

  Hello, I am trying to run a java task from ant. I am trying to run the "org.apache.tools.ant.launch.Launcher" class. I keep on getting the "NoClassDefFoundError" without any class name being specified. I am also getting a "ClassNotFoundException" along with that displaying a message "Could not find the main class: . Program will exit". Here's a snippet of the error [java] Exception in thread "main" java.lang.NoClassDefFoundError: [java] Caused by: java.lang.ClassNotFoundException: [java] at java.net.URLClassLoader$1.run(URLClassLoader.java:200) [java] at java.security.AccessController.doPrivileged(Native Method) [java] at java.net.URLClassLoader.findClass(URLClassLoader.java:188) [java] at java.lang.ClassLoader.loadClass(ClassLoader.java:307) [java] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) [java] at java.lang.ClassLoader.loadClass(ClassLoader.java:252) [java] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) [java] Could not find the main class: . Program will exit. [java] Java Result: 1 Now I am trying to run an ant class from an ant jar and i specifiy the classpath where this class file resides using the "classpathref" attribute, however I still get this message. I checked the ant jar to check the Manifest and the "main" class is specified properly (it's "org.apache.tools.ant.launch.Launcher") . I have exhausted all my resources. Please help ! ! ! ps: My environment is Eclipse on Ubuntu 9.04

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• Classloader issue (GWT)

  - by Banang

  I'm currently working on a gwt app, where the server uses a few third party libs. recently I discovered that one of these libs isn't being properly loaded when running my app in deployed mode, and I just can't seem to figure out what out is I'm doing wrong. In my build script I have the following classpath declaration: <path id="project.class.path"> <pathelement location="${war.dir}/WEB-INF/classes"/> <fileset dir="${war.dir}/WEB-INF/lib" includes="**/*.jar"/> </path> and in a later target I copy the jar I need to the right location: <copy todir="${war.dir}/WEB-INF/lib" file="someJar.jar" /> The project builds as it should, without any errors. The jars are copied to where the should be, and are included in the resulting war file. In development mode everything is working as it should, everything gets loaded properly and I hear no complaints. However, in the deployed version I get this thrown at me: java.lang.NoClassDefFoundError: org/apache/commons/lang/exception/NestableRuntimeException java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:621) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2331) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:976) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1451) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) my.package.server.util.SomeUtils.doSomethingFantastic(SomeUtils.java:84) Line 84 in SomeUtils is trying to instantiate a class from someJar.jar. I know very little about how the class loader for gwt works, and I sure could use a hand. Anyone got any ideas on how to solve this?

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• Java Object superclass

  - by SHiNKiROU

  I have a weird Java question: As we know: All Java classes extend java.lang.Object All Java classes cannot extend itself Then, java.lang.Object must extend java.lang.Object, which is itself, therefore, it should be impossible. How is Object implemented in Java?

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• Seam on Linux Problems

  - by Anand

  Hi, When a seam application on JBOSS using java 1,5 is deployed in Unix platform, I am getting this error. errorjava.lang.NoClassDefFoundError at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:141) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvi ronment.java:62) It runs fine on windows platform. On my local linux machine it runs fine. but on another linux machine it works some times and sometimes it throws up the above error

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• MANIFEST.MF issue

  - by dhananjay

  hi I have created a jar inside this folder: '/usr/local/bin/niidle.jar' in eclipse. And I have another jar inside /usr/local/bin/niidle.jar. In my niidle.jar file,there is one 'lib' folder and in that 'lib' folder,there is another jar file 'hector-0.6.0-17.jar'. I have added this 'hector-0.6.0-17.jar' file in MANIFEST.MF as follows: Manifest-Version: 1.0 Main-Class: com.ensarm.niidle.web.scraper.NiidleScrapeManager Class-Path: hector-0.6.0-17.jar But when I run this using command: >>java -jar /usr/local/bin/niidle.jar arguments... It is not working.. It is showing error message:- Exception in thread "main" java.lang.NoClassDefFoundError: me/prettyprint/hector/api/Serializer at com.ensarm.niidle.web.scraper.NiidleScrapeManager.main(NiidleScrapeManager.java:21) Caused by: java.lang.ClassNotFoundException: me.prettyprint.hector.api.Serializer at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 1 more What is the problem,Please tell me solution for this Exception...

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• Connect to SQLite Database using Eclipse (Java)

  - by bnabilos

  Hello, I'm trying to connect to SQLite database with Ecplise but I have some errors. This is my Java code and the errors that I get on output. Please see if you can help me. Thank you in advance. package jdb; import java.sql.*; public class Test { public static void main(String[] args) throws Exception { Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:/Applications/MAMP/db/sqlite/test.sqlite"); Statement stat = conn.createStatement(); stat.executeUpdate("drop table if exists people;"); stat.executeUpdate("create table people (name, occupation);"); PreparedStatement prep = conn.prepareStatement( "insert into people values (?, ?);"); prep.setString(1, "Gandhi"); prep.setString(2, "politics"); prep.addBatch(); prep.setString(1, "Turing"); prep.setString(2, "computers"); prep.addBatch(); prep.setString(1, "Wittgenstein"); prep.setString(2, "smartypants"); prep.addBatch(); conn.setAutoCommit(false); prep.executeBatch(); conn.setAutoCommit(true); ResultSet rs = stat.executeQuery("select * from people;"); while (rs.next()) { System.out.println("name = " + rs.getString("name")); System.out.println("job = " + rs.getString("occupation")); } rs.close(); conn.close(); } } ans that what I get in Ecplise : Exception in thread "main" java.lang.ClassNotFoundException: org.sqlite.JDBC at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:315) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330) at java.lang.ClassLoader.loadClass(ClassLoader.java:250) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at jdb.Test.main(Test.java:7) Thank you

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• WPF Validation of clipboard Data

  - by Peter

  Hello normal validation is always related to some control, but in my case there is no control to fire validation when its content changes and to show errortemplate to the user. because the data to be validated is in the cipboard. when the user presses "PASTE" button viewmodel processes the data and finds it to be invalid. but what is the best way to invoke WPF validation in this case? as far as i understand using IDataErrorInfo is the way to go, but what is the best way to start validation. and whst is the best way of displaying the error? errortemplate of the button element? Thanks a lot for help. Peter

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• JTable Boolean cell .. how to read it

  - by dimitar

  Hello guys, i have a table with a column that contains Boolean type. now when i try to run a program i have a problem: System.out.println(table.getColumnClass(5)); b= (Boolean)table.getValueAt(row, 5); It prints class java.lang.Boolean but also: Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean and i even try with b= (Boolean)table.getValueAt(row, 5); b= Boolean.parseBoolean((String)table.getValueAt(row, 5)); b= table.getValueAt(row, 5); but those show error too. So how to fix this guys?

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• What does this exception mean? and how do i solve this? java

  - by Nitesh Panchal

  Hello, I am using IcePDF component to view pdf in JApplet on my web page. But for some reason i get this error. Can anybody tell why is this happening and how to solve it? Exception in thread "thread applet-applet.KitKitApplet.class-1" java.lang.StackOverflowError at java.util.PropertyPermissionCollection.implies(Unknown Source) at java.security.Permissions.implies(Unknown Source) at sun.security.provider.PolicyFile.implies(Unknown Source) at java.security.ProtectionDomain.implies(Unknown Source) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPropertyAccess(Unknown Source) at java.lang.System.getProperty(Unknown Source) at org.icepdf.core.util.Defs.property(Defs.java:59) at org.icepdf.core.util.Defs.property(Defs.java:63) at org.icepdf.core.util.Defs.property(Defs.java:63) at org.icepdf.core.util.Defs.property(Defs.java:63) at org.icepdf.core.util.Defs.property(Defs.java:63) at org.icepdf.core.util.Defs.property(Defs.java:63) at org.icepdf.core.util.Defs.property(Defs.java:63)

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• Copying a java text file into a String.

  - by Deepak Konidena

  Hi, I run into the following errors when i try to store a large file into a string. Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:2882) at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:515) at java.lang.StringBuffer.append(StringBuffer.java:306) at rdr2str.ReaderToString.main(ReaderToString.java:52) As is evident, i am running out of heap space. Basically my pgm looks like something like this. FileReader fr = new FileReader(<filepath>); sb = new StringBuffer(); char[] b = new char[BLKSIZ]; while ((n = fr.read(b)) > 0) sb.append(b, 0, n); fileString = sb.toString(); Can someone suggest me why i am running into heap space error? Thanks.

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• Ubuntu Eye-Infinity across 3 displays

  - by Peter G Mac.

  So I purchased a computer recently and have been trying to customise the display. Radeon 6800 series Ubuntu 10.10 I have three 22inch 1080P lcd monitors that are mounted together. Everything is working smooth. How do I get the 'big-desktop' display where I have one enormous display across all monitors? Linux - ATI Catalyst Control Center 11.2 does not give me an option to 'group' my profiles like the pictures on their site show with Windows. I have been searching all over for help. Much Obliged, -Peter

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• java applet won't work

  - by scoobi_doobi

  hey guys, this is homework stuff, but the question is not much about coding. the task is to write a java applet to work on an m-grid server. i have the server running on apache. it has a few sample applets in .jar and .class form. the .class versions work; the .jar versions work on appletviewer, but they break if I submit them as a job to the server with this: load: class examples/pixelcount/PixelCount.class not found. java.lang.ClassNotFoundException: examples.pixelcount.PixelCount.class at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at java.net.HttpURLConnection.getResponseCode(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) ... 7 more Exception: java.lang.ClassNotFoundException: examples.pixelcount.PixelCount.class I'm not really sure where exactly is the problem in here, given that they work on appletviewer. any help would be appreciated.. EDIT: don't know if I wrote it clearly. by ".class version" i refer to html file with this content: <applet height="300" width="450" code="examples/pixelcount/PixelCount.class"></applet> and ".jar" with this content: <applet height="300" width="450" archive="PixelCount.jar" code="examples.pixelcount.PixelCount.class"></applet>

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• GWT RPC and GoDaddy Shared Hosting

  - by Mike Apolis

  Hi, I've deployed the sample Stock Watcher app to my GoDaddy Hosting site, and I get the error below. I've tried compiling the Project in Eclipse with JRE 1.5 because my Host is using jre 1.5. I think the issue is the "gwt-servlet.jar" is not compatible with jre 1.5. Can anyone confirm this. The project runs fine on my local machine using JRE 1.6. Unfortunately GoDaddy will not upgrade my shared hosting account jre to 1.6. GoDaddy Server Setup: Tomcat Version 5.0.27 JRE 1.5_22 Error: HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Error allocating a servlet instance org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 117) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 535) org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java: 417) org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java: 160) org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300) org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374) org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743) org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java: 675) org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866) org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java:683) java.lang.Thread.run(Thread.java:595) root cause java.lang.UnsupportedClassVersionError: Bad version number in .class file java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:621) java.security.SecureClassLoader.defineClass(SecureClassLoader.java: 124) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java: 1634) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java: 860) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java: 1307) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java: 1189) java.security.AccessController.doPrivileged(Native Method) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 117) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 535) org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java: 417) org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java: 160) org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300) org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374) org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743) org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java: 675) org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866) org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java:683) java.lang.Thread.run(Thread.java:595) note The full stack trace of the root cause is available in the Apache Tomcat/5.0.27 logs. Apache Tomcat/5.0.27

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• problm with MANIFEST.MF in jar

  - by Atul

  hi I have created jar in the following folder: /usr/local/bin/niidle.jar. And my MANIFEST.MF file is as follows: Manifest-Version: 1.0 Main-Class: com.ensarm.niidle.web.scraper.NiidleScrapeManager Class-Path: hector-0.6.0-17.jar And I verified that,this 'hector-0.6.0-17.jar' file is also present in the folder: /Projects/EnwelibDatedOct13/Niidle/lib/hector-0.6.0-17.jar I don't want to give full class-path name in MANIFEST.MF file,because I have to run this jar on other's machine,so I gave only jar file name 'Class-Path=hector-0.6.0-17.jar' in MANIFEST.MF file. Inspite of mentioning the Class-Path in MANIFEST.MF file, when I run this using command: java -jar /usr/local/bin/niidle.jar arguments... It is showing error massage: --Exception in thread "main" java.lang.NoClassDefFoundError: me/prettyprint/hector/api/Serializer at com.ensarm.niidle.web.scraper.NiidleScrapeManager.main(NiidleScrapeManager.java:21) Caused by: java.lang.ClassNotFoundException: me.prettyprint.hector.api.Serializer at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 1 more Please give me solution for this error message..

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• "state is undetermined" when starting Grails app on CloudFoundry

  - by SeattleStephens

  I have a Grails app that has been running on CloudFoundry for months. I updated the app from Grails 2.0.4 to 2.1.0 and also updated a few plugins I have been using. Now when I push the app to CloudFoundry and do the start, I receive the error: 'appname' state is undetermined, not enough information available. The tomcat Catalina log shows the NoClassDefFoundError below. I've read about issues with the Ivy cache but have not looked into that yet. I have updated vmc to the latest version (0.3.18). SEVERE: Error deploying web application directory ROOT java.lang.NoClassDefFoundError: org/apache/tomcat/PeriodicEventListener at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632) at java.lang.ClassLoader.defineClass(ClassLoader.java:616) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1159) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1128) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1026) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4421) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4734) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.PeriodicEventListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) ... 34 more

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• Database call crashes Android Application

  - by Darren Murtagh

  i am using a Android database and its set up but when i call in within an onClickListener and the app crashes the code i am using is mButton.setOnClickListener( new View.OnClickListener() { public void onClick(View view) { s = WorkoutChoice.this.weight.getText().toString(); s2 = WorkoutChoice.this.height.getText().toString(); int w = Integer.parseInt(s); double h = Double.parseDouble(s2); double BMI = (w/h)/h; t.setText(""+BMI); long id = db.insertTitle("001", ""+days, ""+BMI); Cursor c = db.getAllTitles(); if (c.moveToFirst()) { do { DisplayTitle(c); } while (c.moveToNext()); } } }); and the log cat for when i run it is: 04-01 18:21:54.704: E/global(6333): Deprecated Thread methods are not supported. 04-01 18:21:54.704: E/global(6333): java.lang.UnsupportedOperationException 04-01 18:21:54.704: E/global(6333): at java.lang.VMThread.stop(VMThread.java:85) 04-01 18:21:54.704: E/global(6333): at java.lang.Thread.stop(Thread.java:1391) 04-01 18:21:54.704: E/global(6333): at java.lang.Thread.stop(Thread.java:1356) 04-01 18:21:54.704: E/global(6333): at com.b00348312.workout.Splashscreen$1.run(Splashscreen.java:42) 04-01 18:22:09.444: D/dalvikvm(6333): GC_FOR_MALLOC freed 4221 objects / 252640 bytes in 31ms 04-01 18:22:09.474: I/dalvikvm(6333): Total arena pages for JIT: 11 04-01 18:22:09.574: D/dalvikvm(6333): GC_FOR_MALLOC freed 1304 objects / 302920 bytes in 29ms 04-01 18:22:09.744: D/dalvikvm(6333): GC_FOR_MALLOC freed 2480 objects / 290848 bytes in 33ms 04-01 18:22:10.034: D/dalvikvm(6333): GC_FOR_MALLOC freed 6334 objects / 374152 bytes in 36ms 04-01 18:22:14.344: D/AndroidRuntime(6333): Shutting down VM 04-01 18:22:14.344: W/dalvikvm(6333): threadid=1: thread exiting with uncaught exception (group=0x400259f8) 04-01 18:22:14.364: E/AndroidRuntime(6333): FATAL EXCEPTION: main 04-01 18:22:14.364: E/AndroidRuntime(6333): java.lang.IllegalStateException: database not open 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1567) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1484) 04-01 18:22:14.364: E/AndroidRuntime(6333): at com.b00348312.workout.DataBaseHelper.insertTitle(DataBaseHelper.java:84) 04-01 18:22:14.364: E/AndroidRuntime(6333): at com.b00348312.workout.WorkoutChoice$3.onClick(WorkoutChoice.java:84) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.view.View.performClick(View.java:2408) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.view.View$PerformClick.run(View.java:8817) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.os.Handler.handleCallback(Handler.java:587) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.os.Handler.dispatchMessage(Handler.java:92) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.os.Looper.loop(Looper.java:144) 04-01 18:22:14.364: E/AndroidRuntime(6333): at android.app.ActivityThread.main(ActivityThread.java:4937) 04-01 18:22:14.364: E/AndroidRuntime(6333): at java.lang.reflect.Method.invokeNative(Native Method) 04-01 18:22:14.364: E/AndroidRuntime(6333): at java.lang.reflect.Method.invoke(Method.java:521) 04-01 18:22:14.364: E/AndroidRuntime(6333): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) 04-01 18:22:14.364: E/AndroidRuntime(6333): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 04-01 18:22:14.364: E/AndroidRuntime(6333): at dalvik.system.NativeStart.main(Native Method) i have notice errors when the application opens but i dont no what thet are from. when i take out the statements to do with the database there is no errors and everthign runs smoothly

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• Android passing an arraylist back to parent activity

  - by Nicklas O

  Hi there. I've been searching for a simple example of this with no luck. In my android application I have two activities: 1. The main activity which is launched at startup 2. A second activity which is launched by pressing a button on the main activty. When the second activity is finished (by pressing a button) I want it to send back an ArrayList of type MyObject to the main activity and close itself, which the main activity can then do whatever with it. How would I go about achieving this? I have been trying a few things but it is crashing my application when I start the second activity. When the user presses button to launch second activity: Intent i = new Intent(MainActivity.this, secondactivity.class); startActivityForResult(i, 1); The array which is bundled back after pressing a button on the second activity: Intent intent= getIntent(); Bundle b = new Bundle(); b.putParcelableArrayList("myarraylist", mylist); intent.putExtras(b); setResult(RESULT_OK, intent); finish(); And finally a listener on the main activity (although I'm not sure of 100% when this code launches...) protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(resultCode==RESULT_OK && requestCode==1){ Bundle extras = data.getExtras(); final ArrayList<MyObject> mylist = extras.getParcelableArrayList("myarraylist"); Toast.makeText(MainActivity.this, mylist.get(0).getName(), Toast.LENGTH_SHORT).show(); } } Any ideas where I am going wrong? The onActivityResult() seems to be crashing my application. EDIT: This is my class MyObject, its called plan and has a name and an id import android.os.Parcel; import android.os.Parcelable; public class Plan implements Parcelable{ private String name; private String id; public Plan(){ } public Plan(String name, String id){ this.name = name; this.id = id; } public String getName(){ return name; } public void setName(String name){ this.name = name; } public String getId(){ return id; } public void setId(String id){ this.id = id; } public String toString(){ return "Plan ID: " + id + " Plan Name: " + name; } @Override public int describeContents() { // TODO Auto-generated method stub return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeString(id); dest.writeString(name); } public static final Parcelable.Creator<Plan> CREATOR = new Parcelable.Creator<Plan>() { public Plan createFromParcel(Parcel in) { return new Plan(); } @Override public Plan[] newArray(int size) { // TODO Auto-generated method stub return new Plan[size]; } }; } This is my logcat E/AndroidRuntime( 293): java.lang.RuntimeException: Unable to instantiate activ ity ComponentInfo{com.daniel.android.groupproject/com.me.android.projec t.secondactivity}: java.lang.NullPointerException E/AndroidRuntime( 293): at android.app.ActivityThread.performLaunchActiv ity(ActivityThread.java:2417) E/AndroidRuntime( 293): at android.app.ActivityThread.handleLaunchActivi ty(ActivityThread.java:2512) E/AndroidRuntime( 293): at android.app.ActivityThread.access$2200(Activi tyThread.java:119) E/AndroidRuntime( 293): at android.app.ActivityThread$H.handleMessage(Ac tivityThread.java:1863) E/AndroidRuntime( 293): at android.os.Handler.dispatchMessage(Handler.ja va:99) E/AndroidRuntime( 293): at android.os.Looper.loop(Looper.java:123) E/AndroidRuntime( 293): at android.app.ActivityThread.main(ActivityThrea d.java:4363) E/AndroidRuntime( 293): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 293): at java.lang.reflect.Method.invoke(Method.java:5 21) E/AndroidRuntime( 293): at com.android.internal.os.ZygoteInit$MethodAndA rgsCaller.run(ZygoteInit.java:860) E/AndroidRuntime( 293): at com.android.internal.os.ZygoteInit.main(Zygot eInit.java:618) E/AndroidRuntime( 293): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime( 293): Caused by: java.lang.NullPointerException E/AndroidRuntime( 293): at com.daniel.android.groupproject.login.<init>( login.java:51) E/AndroidRuntime( 293): at java.lang.Class.newInstanceImpl(Native Method ) E/AndroidRuntime( 293): at java.lang.Class.newInstance(Class.java:1479) E/AndroidRuntime( 293): at android.app.Instrumentation.newActivity(Instr umentation.java:1021) E/AndroidRuntime( 293): at android.app.ActivityThread.performLaunchActiv ity(ActivityThread.java:2409) E/AndroidRuntime( 293): ... 11 more

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• How to use SQLite3 with Java

  - by Bruce

  I am trying to build a simple java program which creates a db file, then a table and inserts dummy values in the table. I found this page http://www.zentus.com/sqlitejdbc/index.html and tried out the example given on the page but I am getting the following error - Exception in thread "main" java.lang.NoClassDefFoundError: Test Caused by: java.lang.ClassNotFoundException: Test 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) Could not find the main class: Test. Program will exit.

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• quick check on use of map api (android)

  - by Peter vdL

  When you use the Google map api, it is not part of the Android SDK, and you have to mention it in your manifest xml file. Do you have to do anything to access the jar file containing the map api code? Or is that automatically present on the device or emulator, the way the SDK code is? Do you need put the map api jar file in your class path, either when compiling or when executing? Or is it kept somewhere where it is already visible, and the requirement of an XML mention is merely to remind you of the licensing issue? Thanks, Peter

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• New to php and need to format a php page from html statement

  - by Peter D

  My problem is the page shows a vertical line of options. I want to put them into a 4 column table to display instead of just down lhs of page. The code I want to change is as follows: </tr> <tr> <td>{LOOP: JOBTYPE} IF("{JOBTYPE.parent_id}"!="0"){&nbsp; {:IF} IF("{JOBTYPE.catcount}"=="0"){<input type="checkbox" name="jobtype[{JOBTYPE.id}]" value="{JOBTYPE.id}" {JOBTYPE.selected}>{JOBTYPE.title}<br>{:IF} IF("{JOBTYPE.catcount}"!="0"){<strong>{JOBTYPE.title}</strong><br>{:IF} {/LOOP: JOBTYPE}</td> </tr> <tr> <td>&nbsp;</td> </tr> As you can see I have another column there and can split cell further but i would like the job list to be displayed accross the page not vertically. Thank you in advance, Peter

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• Java: what is the class for the isBinary-method?

  - by HH

  I am accustomed to java.io.* and java.util.* but not to the tree: com.starbase.util Class FileUtils java.lang.Object | +--com.starbase.util.FileUtils Source. So which class should I import to use the isBinary-method? Do I do "import java.lang.Object;" or "import java.lang.Object.com.starbase.util.FileUtils;"?

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• Django: switch language of message sent from admin panel

  - by yoshi

  I have a model, Order, that has an action in the admin panel that lets an admin send information about the order to certain persons listed that order. Each person has language set and that is the language the message is supposed to be sent in. A short version of what I'm using: from django.utils.translation import ugettext as _ from django.core.mail import EmailMessage lang = method_that_gets_customer_language() body = _("Dear mister X, here is the information you requested\n") body += some_order_information subject = _("Order information") email = EmailMessage(subject, body, '[email protected]', ['[email protected]']) email.send() The customer information about the language he uses is available in lang. The default language is en-us, the translations are in french (fr) and german (de). Is there a way to use the translation for the language specified in lang for body and subject then switch back to en-us? For example: lang is 'de'. The subject and body should get the strings specified in the 'de' translation files.

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