Develop Reference

Exception in thread "main" java.lang.SecurityException: Invalid signature file d igest for Manifest main attributes

I have an application that when run in the IDE (Netbeans 8) works fine. The program makes use of 4 external .jar libraries. It also has a virtual machine argument pointing to a DLL. When I try to execute the .jar from the command line I get an error. This leads me to believe that there is a classpath issue.
This is the error itself:
C:\Users\piuser\Documents\NetBeansProjects\GameTrakaDesktopClient\dist>java -jar
GameTrakaDesktopClient.jar
Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for
Manifest main attributes
at sun.security.util.SignatureFileVerifier.processImpl(Unknown Source)
at sun.security.util.SignatureFileVerifier.process(Unknown Source)
at java.util.jar.JarVerifier.processEntry(Unknown Source)
at java.util.jar.JarVerifier.update(Unknown Source)
at java.util.jar.JarFile.initializeVerifier(Unknown Source)
at java.util.jar.JarFile.getInputStream(Unknown Source)
at sun.misc.URLClassPath$JarLoader$2.getInputStream(Unknown Source)
at sun.misc.Resource.cachedInputStream(Unknown Source)
at sun.misc.Resource.getByteBuffer(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
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.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
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 gametrakadesktopclient.MainMenuUI.main(MainMenuUI.java:242)
C:\Users\piuser\Documents\NetBeansProjects\GameTrakaDesktopClient\dist>

I have used a workaround to get around this problem because I couldn't figure out a solution. I opened all of the JAR files that my application depends on and removed the META-INF/.DSA and META-INF/.SF files

Lucene ClassNotFoundError when loading analyzer

I tried to run Lucene Indexer but it gives me the following error:
java.lang.NoClassDefFoundError: org/apache/lucene/analysis/Analyzer
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetMethodRecursive(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.validateMainClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.analysis.Analyzer
at java.net.URLClassLoader$1.run(Unknown Source)
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)
... 7 more
Exception in thread "main"
I used compile command:
javac -classpath 'C:/Users/Daniel/desktop/Java WorkSpace/JavaPackage/lucene-3.0.0/lucene-core-3.0.0.jar' Indexer.java;
and it works.
But when I tried to execute the compiled class:
java Indexer;
It gives me the ClassNotFoundException(). PS: the compiled class file and jar file are not in the same folder. Would that matter?
Thanks!

The Lucene Analyzers are no longer in the Lucene core. Download the JAR (or add to your Maven dependencies) for the corresponding version here: http://mvnrepository.com/artifact/org.apache.lucene/lucene-analyzers

Java- Can't apply Java Look and Feel

I'm using Synthetica Look and Feel in my application and it works fine on Eclipse. But when i export the Jar file and execute it i got these errors :
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: sun/swing/plaf/synth/SynthUI
at de.javasoft.plaf.synthetica.SyntheticaDefaultLookup.getDefault(SyntheticaDefaultLookup.java:105)
at sun.swing.DefaultLookup.get(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.getInputMap(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.installKeyboardActions(Unknown Source)
at javax.swing.plaf.basic.BasicButtonUI.installKeyboardActions(Unknown Source)
at javax.swing.plaf.basic.BasicButtonUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.AbstractButton.setUI(Unknown Source)
at javax.swing.JButton.updateUI(Unknown Source)
at javax.swing.AbstractButton.init(Unknown Source)
at javax.swing.JButton.<init>(Unknown Source)
at javax.swing.JButton.<init>(Unknown Source)
at de.javasoft.plaf.synthetica.SyntheticaLookAndFeel.installCompatibilityDefaults(SyntheticaLookAndFeel.java:925)
at de.javasoft.plaf.synthetica.SyntheticaLookAndFeel$4.propertyChange(SyntheticaLookAndFeel.java:582)
at java.beans.PropertyChangeSupport.fire(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at javax.swing.UIManager.setLookAndFeel(Unknown Source)
at com.evaluator.MainWindow.<init>(MainWindow.java:85)
at com.evaluator.Main$1.run(Main.java:15)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(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)
Caused by: java.lang.ClassNotFoundException: sun.swing.plaf.synth.SynthUI
at java.net.URLClassLoader$1.run(Unknown Source)
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)
... 35 more
I don't know where is the problem exactly. Here is the way I'm applying the Synthetica Blue Steel Look And Feel :
try
{
UIManager.setLookAndFeel(new SyntheticaBlueSteelLookAndFeel());
UIManager.put("Synthetica.rootPane.titlePane.title.center", true);
UIManager.put("Synthetica.translucency4DisabledIcons.enabled", true);
}
catch (Exception e) {}

Please see the error it can't find the sun/swing/plaf/synth/SynthUI
Library. In development mode You are include that jar file in eclipse library but when you are create a jar file then you are not include the Synthui theme jar. Put that Synthui jar file in jar, ext/ folder and it work fine

I think the way you are exporting the jar file is not correct.
Try exporting the jar as a Runnable jar file.
Follow these steps to export your app as a runnable jar.
1) select export from the file menu.
2) select Java->Runnable JAR file
3) Select the launch configuration i.e your main class.
4) first two option of library handling if you want to package the substance library file in your own jar and the third option(copy required library into a sub folder next to the generated jar) if you want to separate the generated jar file and substance libs.
5)Press finish.
I hope this would solve your problem. :)

Install4j is bypassing the custom installation steps

We have an application packed with install4j.
The initial step is to choose between typical and custom installations.
The custom installation is usually bringing up the option to choose the localsettings folder, the appdata folder and in the next step, the installation folder (default: Program Files).
For some reason, in a specific environment, when checking neither of the options, the installation proceeds without asking for the desired folder paths.
An error file was created as well:
java.lang.ClassNotFoundException: I4jScript_Internal_12
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.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
at com.install4j.runtime.installer.Installer.main(Unknown Source)
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 com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
at com.install4j.runtime.launcher.WinLauncher.main(Unknown Source)
Could you please let me know, what could be the reason for this behavior?

The class that is not found is for a script in your install4j project. This can only happen if there is an inconsistency in your installation directory, i.e. if .install4j/user.jar and .install4j/i4jparams.conf are not from the same installer.

using java applet in google app engine project

I have a question about using java applet on google app engine. I created 2 classes called InteractiveGraphView1 and SimpleApplet. Using an object of InteractiveGraphView1 inside SimpleApplet. Anyway, I'm using some external jars for these 2 classes. I created a jar for my project called "GraphApplet". Then I put this jar into WEB-INF/lib and also I add it into gae project as external jar. To be sure I also added external jars that I used in GraphApplet class into my gae project. I deployed the gae project and when I tried to run applet it gives me this error:
load: class SimpleApplet.class not found.
java.lang.ClassNotFoundException: SimpleApplet.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.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$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: SimpleApplet.class
java.lang.RuntimeException: java.lang.NoClassDefFoundError: edu/uci/ics/jung/algorithms/layout/Layout
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: edu/uci/ics/jung/algorithms/layout/Layout
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(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)
Caused by: java.lang.ClassNotFoundException: edu.uci.ics.jung.algorithms.layout.Layout
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 20 more
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: edu/uci/ics/jung/algorithms/layout/Layout
What should I do?
P.S. I forgot to tell that I'm using JUNG library in my GraphApplet project. I also added this into google app engine project
Adding into HMTL
<html>
Hello App Engine
This is my page<br>
Below you see an applet<br>
<br>
<Applet Code="SimpleApplet.java" archive="graphic.jar" width=200 Height=200>
</Applet>

Applet is just a jar file that is downloaded by browser and executed on client side as applet.
It has nothing to do with server code. From the point of server it's just a static file. So you should not pout it inside WEB-INF/lib, where server libs reside. Just put it next to your html files.
For an applet referring to other jars see: How do I build an applet which needs an external jar, using ant?

Just put your applet.jar to root of WAR directory