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How To Fix Class Format Error Bad Magic Number
If you have Class Format Error Bad Magic Number then we strongly recommend that you download and run this (Class Format Error Bad Magic Number) repair tool.
Symptoms & Summary
Class Format Error Bad Magic Number and other critical errors can occur when your Windows operating system becomes corrupted. Opening programs will be slower and response times will lag. When you have multiple applications running, you may experience crashes and freezes. There can be numerous causes of this error including excessive startup entries, registry errors, hardware/RAM decline, fragmented files, unnecessary or redundant program installations and so on.
In order to fix your error, it is recommended that you download the 'Class Format Error Bad Magic Number Repair Tool'. This is an advanced optimization tool that can repair all the problems that are slowing your computer down. You will also dramatically improve the speed of your machine when you address all the problems just mentioned.
Recommended: In order to repair your system and Class Format Error Bad Magic Number, download and run Reimage. This repair tool will locate, identify, and fix thousands of Windows errors. Your computer should also run faster and smoother after using this software.
File Size 746 KB
Compatible Windows XP, Vista, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit) Windows 10 (32/64 bit)
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up java.lang.ClassFormatError JVMCFRE076 bad magic number up vote 2 down vote favorite This question is partly solved. I will write about it since today google doesn’t provide that much help. I have a webapp which is running fine on my local Ubuntu Linux Java environment. When I deploy it on a suse linux environment I get the following exception: java.lang.RuntimeException: java.lang.ClassFormatError: JVMCFRE076 bad magic number; class=com/package/util/MongodbUtil, offset=0 Error: java.lang.ClassFormatError: JVMCFRE076 bad magic number; class=com/package/util/MongodbUtil, offset=0 /items added=0 /items deleted=0 /items unchanged=0 The problem derives from the Class name. The exception will only be thrown when it includes "Util" in the name. I renamed the Class to DbTool and it all worked fine. Digging a bit deeper it turned out that I can't include parts of the package name in the Class name. I have a workaround which works, but I'm still interested to know why the exception was thrown and why it works on my local environment but not on the remote environment. My local tomcat runs on open JDK 1.6.0_27 and the remote tomcat runs on IBM JRE 1_6_0. Both environments uses tomcat 6.36 java share|improve this question asked Apr 29 '13 at 15:43 Leonard Saers 122312
Java testing Databases Java development in cloud Java DevOps Modular code EJB specification Modular containers Modular troubleshooting Programming code App servers Modular tools Java in the cloud Java Web services WS* specs Architecture Java middleware Spring Hibernate Servlets JSP Java client platforms Framework JSF Web portals UI Enterprise Java development JSRs and APIs Languages http://stackoverflow.com/questions/16282787/java-lang-classformaterror-jvmcfre076-bad-magic-number JVM languages DSLs Java app deployment Java tools Java performance Java performance Cloud platforms JVM tuning Java HPC Web dev tools Development tools Open source strategy IDEs Java platforms Java testing Development hardware Mobile app dev Mobile development and deployment Mobile cloud apps http://www.theserverside.com/news/thread.tss?thread_id=33274 Mobile platforms Mobile ALM Mobile app testing SEARCH this site and the web Site Index Home>Web tier: servlets, JSP, Web frameworks>java.lang.ClassFormatError: Bad magic number Email This Home Web tier: servlets, JSP, Web frameworks: java.lang.ClassFormatError: Bad magic number Get thread feed java.lang.ClassFormatError: Bad magic number (2 messages) Posted by: Ankur Jain Posted on: April 13 2005 05:40 EDT Hi,I have a jsp which is calling an applet, placed inside a JAR file. While loading applet, I am getting this error message. Java(TM) Plug-in: Version 1.3.1_01Using JRE version 1.3.1_01 Java HotSpot(TM) Client VMUser home directory = C:\Documents and Settings\AnkurProxy Configuration: Manual ConfigurationProxy: 192.168.11.6:80java.lang.ClassFormatError: SalesCalculatorAppletBeanInfo (Bad magic number)at java.lang.ClassLoader.defineClass0(Native Method)at java.lang.ClassLoader.defineClass(Unknown Source)at java.security.SecureClassLoader.defineClass(Unknown Source)at sun.applet.AppletClassLoader.findClass(Unknown Source)at sun.plugin.security.PluginClassLoader.access$201(Unknown Source)at sun.plugin.security.PluginClassLoader$1.run(Unknown Source)at java.security.AccessController.doPrivileged(Native Method)at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown Source)at sun.applet.AppletClassLoader.loadClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown S
Error - bad magic number! Gail Baker 12/3/06 11:31 PM Re: Class Format Error - bad magic number! Jelga . 12/3/06 11:37 PM Re: Class Format Error http://www.griddlers.net/forum/-/message_boards/message/4921141/pop_up - bad magic number! Gail Baker 12/4/06 12:17 AM Re: Class Format Error - bad magic number! Jelga . 12/4/06 12:24 AM Re: Class Format Error - bad magic number! Gail Baker 12/4/06 12:26 https://answers.yahoo.com/question/?qid=20070802045500AAN78Ow AM Re: Class Format Error - bad magic number! Gail Baker 12/4/06 12:34 AM Re: Class Format Error - bad magic number! Jelga . 12/4/06 11:59 AM Gail Baker Posts: 11 Join Date: class format 4/16/04 Recent Posts Class Format Error - bad magic number! Answer 12/3/06 11:31 PM I've just come back after months away and I can't load any puzzles.I'm just getting a message on the page, instead of the puzzle -java.lang.ClassFormatError: sk/ra100/pbn/GriddlersApplet(Bad magic number)The java console error is (twice) - Error: elem has no propertiesSource File: http://www.griddlers.net/scripts/rewrite_comment.jsLine: 2 0 (0 Votes) Flag Please sign in to flag this class format error as inappropriate. Top Jelga . Moderator Posts: 1588 Join Date: 1/31/04 Recent Posts Re: Class Format Error - bad magic number! Answer 12/3/06 11:37 PM as a reply to Gail Baker. Hi bluebear,There have been some background changes to the site, it might mean your Java needs updating. Could you try this and please tell us if it helped?Jelga 0 (0 Votes) Flag Please sign in to flag this as inappropriate. Top Gail Baker Posts: 11 Join Date: 4/16/04 Recent Posts Re: Class Format Error - bad magic number! Answer 12/4/06 12:17 AM as a reply to Gail Baker. The update is for MacOS X.4 Tiger and I'm using X.2 Jaguar, so it doesn't look like I can update. 0 (0 Votes) Flag Please sign in to flag this as inappropriate. Top Jelga . Moderator Posts: 1588 Join Date: 1/31/04 Recent Posts Re: Class Format Error - bad magic number! Answer 12/4/06 12:24 AM as a reply to Gail Baker. Ah, a fellow Mac user. I must admit Mac's and Griddlers don't go together very well. :? Which browser are you using? Does it help to switch to another one or do you get the same error t
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class format error
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There are many reasons why Class Format Error Bad Magic Number happen, including having malware, spyware, or programs not installing properly. You can have all kinds of system conflicts, registry errors, and Active X errors. Reimage specializes in Windows repair. It scans and diagnoses, then repairs, your damaged PC with technology that not only fixes your Windows Operating System, but also reverses the damage already done with a full database of replacement files.
A FREE Scan (approx. 5 minutes) into your PC's Windows Operating System detects problems divided into 3 categories - Hardware, Security and Stability. At the end of the scan, you can review your PC's Hardware, Security and Stability in comparison with a worldwide average. You can review a summary of the problems detected during your scan. Will Reimage fix my Class Format Error Bad Magic Number problem? There's no way to tell without running the program. The state of people's computers varies wildly, depending on the different specs and software they're running, so even if reimage could fix Class Format Error Bad Magic Number on one machine doesn't necessarily mean it will fix it on all machines. Thankfully it only takes minutes to run a scan and see what issues Reimage can detect and fix.
A Windows error is an error that happens when an unexpected condition occurs or when a desired operation has failed. When you have an error in Windows, it may be critical and cause your programs to freeze and crash or it may be seemingly harmless yet annoying.
A stop error screen or bug check screen, commonly called a blue screen of death (also known as a BSoD, bluescreen), is caused by a fatal system error and is the error screen displayed by the Microsoft Windows family of operating systems upon encountering a critical error, of a non-recoverable nature, that causes the system to "crash".
One of the biggest causes of DLL's becoming corrupt/damaged is the practice of constantly installing and uninstalling programs. This often means that DLL's will get overwritten by newer versions when a new program is installed, for example. This causes problems for those applications and programs that still need the old version to operate. Thus, the program begins to malfunction and crash.
Computer hanging or freezing occurs when either a program or the whole system ceases to respond to inputs. In the most commonly encountered scenario, a program freezes and all windows belonging to the frozen program become static. Almost always, the only way to recover from a system freeze is to reboot the machine, usually by power cycling with an on/off or reset button.
Once your computer has been infected with a virus, it's no longer the same. After removing it with your anti-virus software, you're often left with lingering side-effects. Technically, your computer might no longer be infected, but that doesn't mean it's error-free. Even simply removing a virus can actually harm your system.
Reimage repairs and replaces all critical Windows system files needed to run and restart correctly, without harming your user data. Reimage also restores compromised system settings and registry values to their default Microsoft settings. You may always return your system to its pre-repair condition.
Reimage patented technology, is the only PC Repair program of its kind that actually reverses the damage done to your operating system. The online database is comprised of over 25,000,000 updated essential components that will replace any damaged or missing file on a Windows operating system with a healthy version of the file so that your PC's performance, stability & security will be restored and even improve. The repair will deactivate then quarantine all Malware found then remove virus damage. All System Files, DLLs, and Registry Keys that have been corrupted or damaged will be replaced with new healthy files from our continuously updated online database.
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Download Size: 746KB
To Fix (Class Format Error Bad Magic Number) you need to follow the steps below:
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Windows Operating Systems:
Compatible with Windows XP, Vista, Windows 7 (32 and 64 bit), Windows 8 & 8.1 (32 and 64 bit), Windows 10 (32/64 bit).