FULL PRODUCT VERSION :
1.8.0_40-b25 Java HotSpot(TM) Client VM

ADDITIONAL OS VERSION INFORMATION :
Windows 7, Windows 8

EXTRA RELEVANT SYSTEM CONFIGURATION :
Client side cache is OFF
Two or more the same Applets on page!

A DESCRIPTION OF THE PROBLEM :
The Java plug-in is not able to load two or more Applets pointing to the same jar file. When Java cache is disabled! Java 7 update 75+, Java 8 update 31+.

REGRESSION. Last worked in version 7u76

ADDITIONAL REGRESSION INFORMATION:
Java 8 update 31, Java 7 update 76 - have the same issue

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Open Java control panel
2. Disable the Java cache
3. load page with 2 or more applets (pointing to the same jar file)
4. see log:
...
cache: registerReference: com.sun.deploy.cache.MemoryCache$CachedResourceReference@9ad34624: 1
basic: exception: zip file closed.
java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(Unknown Source)
...

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
All Applets should load correctly.
ACTUAL -
Looks like MemoryCache has a conflict with reusing the same jar file many times.
Java plug-in does not load jar files: Applets are not started.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Log started: Mi, 1 Apr 2015 10:29:16 +0200
Java Plug-in 11.40.2.25
Using JRE version
 1.8.0_40-b25 Java HotSpot(TM) Client VM
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@4227ba
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@226088
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@35196a
security: Expected Main URL: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
security: Expected Main URL: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
security: Expected Main URL: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
basic: Plugin2ClassLoader.addURL parent called for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
basic: Plugin2ClassLoader.addURL parent called for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
basic: Plugin2ClassLoader.addURL parent called for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
security: Loading SSL Root CA certificates from C:\Program Files (x86)\Java\jre1.8.0_40\lib\security\cacerts
security: Loaded SSL Root CA certificates from C:\Program Files (x86)\Java\jre1.8.0_40\lib\security\cacerts
security: Obtain certificate collection in SSL Root CA certificate store
security: Obtain certificate collection in SSL Root CA certificate store
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Loading certificates from Internet Explorer ROOT certificate store
security: Loaded certificates from Internet Explorer ROOT certificate store
security: Loading certificates from Internet Explorer DISALLOWED certificate store
security: Loaded certificates from Internet Explorer DISALLOWED certificate store
security: Checking if certificate is in Internet Explorer DISALLOWED certificate store
security: Checking if SSL certificate is in Deployment permanent certificate store
security: Loading certificates from Internet Explorer ROOT certificate store
security: Loaded certificates from Internet Explorer ROOT certificate store
security: Revocation check disabled
security: Invalid certificate from HTTPS server
basic: Dialog type is not candidate for embedding
security: Saving certificates in Deployment session certificate store
security: Saved certificates in Deployment session certificate store
security: Obtain certificate collection in SSL Root CA certificate store
security: Obtain certificate collection in SSL Root CA certificate store
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if certificate is in Internet Explorer DISALLOWED certificate store
security: Obtain certificate collection in SSL Root CA certificate store
security: Obtain certificate collection in SSL Root CA certificate store
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if certificate is in Internet Explorer DISALLOWED certificate store
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
network: Connecting http://ldciy3s.wdf.sap.corp:57801/ with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with cookie "shpuvid=CkMtm1PrHNltRhnvAwadAg==; sap-usercontext=sap-language=EN&sap-client=000; SAP_SESSIONID_Y3S_000=Q6aVkjx-TlHt1IsUZ1R0hT5b2y_YSBHkriUAUFaPAgo%3d; MYSAPSSO2=AjQxMDMBABhXAEUASQBDAEsARAAgACAAIAAgACAAIAACAAYwADAAMAADABBZADMAUwAgACAAIAAgACAABAAYMgAwADEANQAwADQAMAAxADAAOAAyADIABQAEAAAACAYAAlgACQACRQD%2fATQwggEwBgkqhkiG9w0BBwKgggEhMIIBHQIBATELMAkGBSsOAwIaBQAwCwYJKoZIhvcNAQcBMYH9MIH6AgEBMFAwRTELMAkGA1UEBhMCREUxDzANBgNVBAoTBlNBUC1BRzEMMAoGA1UECxMDWTNTMRcwFQYDVQQDDA4qLndkZi5zYXAuY29ycAIHIBEHFBEFUjAJBgUrDgMCGgUAoF0wGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUwNDAxMDgyMjMyWjAjBgkqhkiG9w0BCQQxFgQU8Tq7iCDeGIp4w2%21QnkkAmZqU%2frcwCQYHKoZIzjgEAwQuMCwCFBFQHHBLpS9dd%215xANXL2F%21AY51kAhR%2fV%2fQqmasyriKBO9HzX9yZk9tPcA%3d%3d"
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with cookie "shpuvid=CkMtm1PrHNltRhnvAwadAg==; sap-usercontext=sap-language=EN&sap-client=000; SAP_SESSIONID_Y3S_000=Q6aVkjx-TlHt1IsUZ1R0hT5b2y_YSBHkriUAUFaPAgo%3d; MYSAPSSO2=AjQxMDMBABhXAEUASQBDAEsARAAgACAAIAAgACAAIAACAAYwADAAMAADABBZADMAUwAgACAAIAAgACAABAAYMgAwADEANQAwADQAMAAxADAAOAAyADIABQAEAAAACAYAAlgACQACRQD%2fATQwggEwBgkqhkiG9w0BBwKgggEhMIIBHQIBATELMAkGBSsOAwIaBQAwCwYJKoZIhvcNAQcBMYH9MIH6AgEBMFAwRTELMAkGA1UEBhMCREUxDzANBgNVBAoTBlNBUC1BRzEMMAoGA1UECxMDWTNTMRcwFQYDVQQDDA4qLndkZi5zYXAuY29ycAIHIBEHFBEFUjAJBgUrDgMCGgUAoF0wGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUwNDAxMDgyMjMyWjAjBgkqhkiG9w0BCQQxFgQU8Tq7iCDeGIp4w2%21QnkkAmZqU%2frcwCQYHKoZIzjgEAwQuMCwCFBFQHHBLpS9dd%215xANXL2F%21AY51kAhR%2fV%2fQqmasyriKBO9HzX9yZk9tPcA%3d%3d"
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with cookie "shpuvid=CkMtm1PrHNltRhnvAwadAg==; sap-usercontext=sap-language=EN&sap-client=000; SAP_SESSIONID_Y3S_000=Q6aVkjx-TlHt1IsUZ1R0hT5b2y_YSBHkriUAUFaPAgo%3d; MYSAPSSO2=AjQxMDMBABhXAEUASQBDAEsARAAgACAAIAAgACAAIAACAAYwADAAMAADABBZADMAUwAgACAAIAAgACAABAAYMgAwADEANQAwADQAMAAxADAAOAAyADIABQAEAAAACAYAAlgACQACRQD%2fATQwggEwBgkqhkiG9w0BBwKgggEhMIIBHQIBATELMAkGBSsOAwIaBQAwCwYJKoZIhvcNAQcBMYH9MIH6AgEBMFAwRTELMAkGA1UEBhMCREUxDzANBgNVBAoTBlNBUC1BRzEMMAoGA1UECxMDWTNTMRcwFQYDVQQDDA4qLndkZi5zYXAuY29ycAIHIBEHFBEFUjAJBgUrDgMCGgUAoF0wGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUwNDAxMDgyMjMyWjAjBgkqhkiG9w0BCQQxFgQU8Tq7iCDeGIp4w2%21QnkkAmZqU%2frcwCQYHKoZIzjgEAwQuMCwCFBFQHHBLpS9dd%215xANXL2F%21AY51kAhR%2fV%2fQqmasyriKBO9HzX9yZk9tPcA%3d%3d"
network: ResponseCode for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : 200
network: Encoding for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : null
network: ResponseCode for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : 200
network: Encoding for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : null
network: ResponseCode for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : 200
network: Encoding for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : null
network: Server response: (length: 188171, lastModified: Wed Mar 25 11:45:37 CET 2015, downloadVersion: null, mimeType: application/java-archive)
network: Server response: (length: 188171, lastModified: Wed Mar 25 11:45:37 CET 2015, downloadVersion: null, mimeType: application/java-archive)
network: Server response: (length: 188171, lastModified: Wed Mar 25 11:45:37 CET 2015, downloadVersion: null, mimeType: application/java-archive)
network: Downloading resource: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
Content-Length: 188.171
Content-Encoding: null
network: Downloading resource: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
Content-Length: 188.171
Content-Encoding: null
network: Downloading resource: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
Content-Length: 188.171
Content-Encoding: null
network: Wrote URL https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar to File C:\Users\D026619\AppData\Local\Temp\jar_cache7086401617294260571.tmp
network: Wrote URL https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar to File C:\Users\D026619\AppData\Local\Temp\jar_cache5445834516988789716.tmp
network: Wrote URL https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar to File C:\Users\D026619\AppData\Local\Temp\jar_cache5487150593761588194.tmp
security: blacklist: created: NEED_CREATE, lastModified: 0
security: Blacklist file not found or revocation check is disabled
security: Blacklist file not found or revocation check is disabled
security: Blacklist file not found or revocation check is disabled
security: Trusted libraries list file not found
security: Trusted libraries list file not found
security: Trusted libraries list file not found
cache: signed entry "origin" missing from jar https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
cache: signed entry "origin" missing from jar https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
security: Blacklist file not found or revocation check is disabled
network: Disconnect connection to https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
network: Downloaded https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar: C:\Users\D026619\AppData\Local\Temp\jar_cache7086401617294260571.tmp
cache: Adding MemoryCache entry: https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
cache: registerReference: com.sun.deploy.cache.MemoryCache$CachedResourceReference@9ad34624: 1
security: Blacklist file not found or revocation check is disabled
network: Disconnect connection to https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
network: Downloaded https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar: C:\Users\D026619\AppData\Local\Temp\jar_cache5487150593761588194.tmp
cache: MemoryCache replacing https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar (refcnt=1). Was: com.sun.deploy.net.DownloadEngine$2@1f52a8d Now: com.sun.deploy.net.DownloadEngine$2@22df1a
cache: registerReference: com.sun.deploy.cache.MemoryCache$CachedResourceReference@9ad34624: 1
basic: exception: zip file closed.
java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(Unknown Source)
at java.util.zip.ZipFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getJarEntry(Unknown Source)
at java.util.jar.JarFile.getManEntry(Unknown Source)
at java.util.jar.JarFile.getManifestFromReference(Unknown Source)
at java.util.jar.JarFile.getManifest(Unknown Source)
at com.sun.deploy.security.DeployManifestChecker.getPermissionRequestType(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.wantsAllPerms(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler.getAllPCodeSources(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler.access$700(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler$ParentCallback.strategy(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler$ParentCallback.openClassPathElement(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.getJarFile(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.access$800(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.ensureOpen(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.<init>(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Ignored exception: java.lang.IllegalStateException: zip file closed
cache: signed entry "origin" missing from jar https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
security: Blacklist file not found or revocation check is disabled
network: Disconnect connection to https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar
network: Downloaded https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar: C:\Users\D026619\AppData\Local\Temp\jar_cache5445834516988789716.tmp
cache: MemoryCache replacing https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar (refcnt=1). Was: com.sun.deploy.net.DownloadEngine$2@22df1a Now: com.sun.deploy.net.DownloadEngine$2@180aafb
cache: registerReference: com.sun.deploy.cache.MemoryCache$CachedResourceReference@9ad34624: 1
basic: exception: zip file closed.
java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(Unknown Source)
at java.util.zip.ZipFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getJarEntry(Unknown Source)
at java.util.jar.JarFile.getManEntry(Unknown Source)
at java.util.jar.JarFile.getManifestFromReference(Unknown Source)
at java.util.jar.JarFile.getManifest(Unknown Source)
at com.sun.deploy.security.DeployManifestChecker.getPermissionRequestType(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.wantsAllPerms(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler.getAllPCodeSources(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler.access$700(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler$ParentCallback.strategy(Unknown Source)
at com.sun.deploy.security.CPCallbackHandler$ParentCallback.openClassPathElement(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.getJarFile(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.access$800(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.ensureOpen(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.<init>(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Ignored exception: java.lang.IllegalStateException: zip file closed
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with proxy=DIRECT
network: Connecting https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar with cookie "shpuvid=CkMtm1PrHNltRhnvAwadAg==; sap-usercontext=sap-language=EN&sap-client=000; SAP_SESSIONID_Y3S_000=Q6aVkjx-TlHt1IsUZ1R0hT5b2y_YSBHkriUAUFaPAgo%3d; MYSAPSSO2=AjQxMDMBABhXAEUASQBDAEsARAAgACAAIAAgACAAIAACAAYwADAAMAADABBZADMAUwAgACAAIAAgACAABAAYMgAwADEANQAwADQAMAAxADAAOAAyADIABQAEAAAACAYAAlgACQACRQD%2fATQwggEwBgkqhkiG9w0BBwKgggEhMIIBHQIBATELMAkGBSsOAwIaBQAwCwYJKoZIhvcNAQcBMYH9MIH6AgEBMFAwRTELMAkGA1UEBhMCREUxDzANBgNVBAoTBlNBUC1BRzEMMAoGA1UECxMDWTNTMRcwFQYDVQQDDA4qLndkZi5zYXAuY29ycAIHIBEHFBEFUjAJBgUrDgMCGgUAoF0wGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUwNDAxMDgyMjMyWjAjBgkqhkiG9w0BCQQxFgQU8Tq7iCDeGIp4w2%21QnkkAmZqU%2frcwCQYHKoZIzjgEAwQuMCwCFBFQHHBLpS9dd%215xANXL2F%21AY51kAhR%2fV%2fQqmasyriKBO9HzX9yZk9tPcA%3d%3d"
basic: Dialog type is not candidate for embedding
security: Grant connect perm for https://ldciy3s.wdf.sap.corp:57801/sap/public/bc/webdynpro/ssr/uuielibs/active_component/com_sap_acf_updown.jar : java.security.Permissions@c1e14 (
 ("java.net.URLPermission" "https://ldciy3s.wdf.sap.corp:57801" "*:*")
 ("java.net.URLPermission" "https://ldciy3s.wdf.sap.corp:57801/-" "*:*")
)

basic: exception: java.lang.reflect.InvocationTargetException.
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at sun.plugin2.applet.Plugin2ClassLoader.defineClassHelper(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.access$100(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
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)
... 15 more
Caused by: java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(Unknown Source)
at java.util.zip.ZipFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getJarEntry(Unknown Source)
at java.util.jar.JarFile.getManEntry(Unknown Source)
at java.util.jar.JarFile.getManifestFromReference(Unknown Source)
at java.util.jar.JarFile.getManifest(Unknown Source)
at com.sun.deploy.security.DeployManifestChecker.getPermissionRequestType(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.wantsAllPerms(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.isTrustedByTrustDecider(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.getPermissions(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.getPermissions(Unknown Source)
at java.security.SecureClassLoader.getProtectionDomain(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
... 19 more
Ignored exception: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
basic: Dialog type is not candidate for embedding
basic: Dialog type is not candidate for embedding
basic: PluginMain.unregisterApplet: 10 from mananger sun.plugin2.applet.Applet2Manager@d95832
java.lang.NullPointerException
at com.sun.deploy.ui.UIFactory.showErrorDialog(Unknown Source)
at com.sun.deploy.ui.UIFactory.showExceptionDialog(Unknown Source)
at com.sun.deploy.uitoolkit.impl.awt.ui.UIFactoryImpl.showExceptionDialog(Unknown Source)
at com.sun.deploy.uitoolkit.ui.DelegatingPluginUIFactory.showExceptionDialog(Unknown Source)
at com.sun.deploy.trace.Trace.printException(Unknown Source)
at com.sun.deploy.trace.Trace.printException(Unknown Source)
at com.sun.deploy.trace.Trace.printException(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.showAppletException(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.showAppletException(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
security: Reset deny session certificate store
basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@35196a
java.lang.Exception: AppletLifecycle interrupted
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
Make html page with 2 applets - pointing to the same jar file
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Activate the Java cache