Thread: NoClassDefFoundError and ClassNotFoundException (sphinx/ant/java)

Hello. I am new to java and really need help. I am trying to make a new sphinx app. I keep getting the following message, tried to change the class paths, tried to edit my MANIFEST file. still nothing.

dekita@dekita-laptop:/usr/local/sphinx4$ java -mx256m -jar bin/RobotTest.jar
Exception in thread "main" java.lang.NoClassDefFoundError: edu/cmu/sphinx/demo/RobotTest
Caused by: java.lang.ClassNotFoundException: edu.cmu.sphinx.demo.RobotTest
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: edu.cmu.sphinx.demo.RobotTest. Program will exit


Any help would be greatly appreciated. Thank you in advance for your help and for the patience you will need!

edu.cmu.sphinx.demo.RobotTest

First you need to find the class mentioned in the error message.
Then you need to put in on the classpath so the java command can find it.
Can you explain what you have done, where all the files are and show the console when you execute the java command.
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

Thank you so much for replying ok, now i am dealing with another error message.

my RobotTest.class was missing in the RobotTest.jar file when i tried executing it by putting:
dekita@dekita-laptop:/usr/local/sphinx4$ java -mx256m -jar bin/RobotTest.jar

my RobotTest.jar is within the sphinx4/bin
within this jar is the MANIFEST and edu/cmu/sphinx/demo/RobotTest which has RobotTest.gram, RobotTest.config.xml, and RobotTest.class
RobotTest file is also within /usr/local/sphinx/src/apps/edu/cmu/sphinx/demo/

here is what I did within the terminal, sorry if its more than you need. I have been at this for almost 2 weeks

-buildMac:

-components:

jar:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_jsapi2:

-initVariables:

-init:

-dependentComponents:

-init:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling javax.speech for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/javax.speech/build.xml:68: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling org.jvoicexml.jsapi2 for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2/build.xml:115: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

-jar:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse/build.xml:41: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildFreetts:

-buildSphinx4:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse.sphinx4/build.xml:48: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildSapi:

-buildMac:

-components:

jar:

jsapi20_jar:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

demos:

make_lib_dir:

check_jsapi_jar_present:

issue_jsapi_warning:

compile_sphinx_helloworld:

compile_sphinx_RobotTest:
[jar] Building jar: /usr/local/sphinx4/bin/RobotTest.jar

compile_sphinx_hellongram:

compile_sphinx_lattice:

compile_sphinx_classbased:

compile_sphinx_confidence:

compile_sphinx_raw:

compile_jsapi_dialog:

compile_jsapi_jsgf:

init:

keystore:

compile_zipcity:

compile_sphinx_transcriber:

compile_aligner:

compile_tags:

compile_sphinx_demos:

all:
[echo] Build complete.

BUILD SUCCESSFUL
Total time: 3 seconds
dekita@dekita-laptop:/usr/local/sphinx4$ java -mx256m -jar bin/RobotTest.jar
Exception in thread "main" java.lang.NoClassDefFoundError: edu/cmu/sphinx/demo/RobotTest/RobotTest
Caused by: java.lang.ClassNotFoundException: edu.cmu.sphinx.demo.RobotTest.RobotTest
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: edu.cmu.sphinx.demo.RobotTest.RobotTest. Program will exit.
dekita@dekita-laptop:/usr/local/sphinx4$ ant
Buildfile: /usr/local/sphinx4/build.xml

all:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

create_all_models:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

create_my_model:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

create_my_model:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

create_my_model:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

jsapi10base_jar:

sphinx4_jar:

batch_jar:

tags_jar:

audiotool_jar:

jars:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_jsapi2:

-initVariables:

-init:

-dependentComponents:

-init:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling javax.speech for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/javax.speech/build.xml:68: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling org.jvoicexml.jsapi2 for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2/build.xml:115: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

-jar:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse/build.xml:41: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildFreetts:

-buildSphinx4:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse.sphinx4/build.xml:48: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildSapi:

-buildMac:

-components:

jar:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_jsapi2:

-initVariables:

-init:

-dependentComponents:

-init:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling javax.speech for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/javax.speech/build.xml:68: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

compileJ2ME:

preverify:

compileJSE:
[echo] compiling org.jvoicexml.jsapi2 for JSE with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2/build.xml:115: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

-jar:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse/build.xml:41: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildFreetts:

-buildSphinx4:

-init:

compile:
[echo] compiling with debug=true, optimize=false
[javac] /usr/local/sphinx4/src/jsapi2/org.jvoicexml.jsapi2.jse.sphinx4/build.xml:48: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

jar:

-buildSapi:

-buildMac:

-components:

jar:

jsapi20_jar:

check_jsapi_default_present:

copy_jsapi_jar:

check_jsapi_jar_present:

issue_jsapi_warning:

set_patternset_to_compile:

set_patternset_to_doc:

handle_jsapi:

compile_src:

demos:

make_lib_dir:

check_jsapi_jar_present:

issue_jsapi_warning:

compile_sphinx_helloworld:

compile_sphinx_RobotTest:

compile_sphinx_hellongram:

compile_sphinx_lattice:

compile_sphinx_classbased:

compile_sphinx_confidence:

compile_sphinx_raw:

compile_jsapi_dialog:

compile_jsapi_jsgf:

init:

keystore:

compile_zipcity:

compile_sphinx_transcriber:

compile_aligner:

compile_tags:

compile_sphinx_demos:

all:
[echo] Build complete.

BUILD SUCCESSFUL
Total time: 1 second
dekita@dekita-laptop:/usr/local/sphinx4$ java -mx256m -jar bin/RobotTest.jar
Exception in thread "main" java.lang.ClassFormatError: Incompatible magic value 791284256 in class file edu/cmu/sphinx/demo/RobotTest/RobotTest
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknow n Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(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)
Could not find the main class: edu.cmu.sphinx.demo.RobotTest.RobotTest. Program will exit.
dekita@dekita-laptop:/usr/local/sphinx4$

within this file is RobotTest.config.xml, RobotTest.gram, RobotTest.java, and RobotTest.Manifest

ClassFormatError: Incompatible magic value 791284256

I think you get that for an invalid class file. Look at the edu/cmu/sphinx/demo/RobotTest/RobotTest.class file with a hex editor and see what the first few bytes of the flle looks like. It should be something like this: CAFEBABE0000003200640A001900

i used ghex. Are all editors scared of .jar files? I hopeI did this right but i could not get to the .class file first but i copy and past it to the desktop and and what i got was:


000000002F 2A 0A 20 A2 20 43 6F 70 79... The Disclaimer Statement....

If that is from the .class file, then it definitely is not a .class from the javac compiler.
It looks like a text file. Open a text editor and the open the file. Or rename it by adding .txt and clicking on it.

The left hand part of your post shows 000000002F
that looks to me like the displacement into the file in hex. Ie its not the first bytes of the file.
It should be 0000000000 to show the first bytes.

Why is it a txt file even though I "tried" to compile it in eclipse..which is the only way i know how i thought i knew how to make a jar file etc.

but I change it to a text file and it showed up. I am not sure what to do from here.

Go back to the .java file and try to compile it to create a good .class file. Then build the jar file being sure to use the good .class file.

Sorry about your IDE being confusing. It is for lots of students (and me also).

Is there an easy way to build a jar file? I think thats where i created this flaw. I have just started using linux, ubuntu, sphinx, and eclipse! and none of the sites have a steo by step instruction on using eclipse and builsing a sphinx app. I appreciate your help very much and I will be replying shortly in hopes to say ITS WORKING!

I suppose some of the IDEs are useful. I build mine with a batch file and trial and error.
I have a utility that checks that the contents of the jar file is complete (ie no missing classes) and has no extra class files.

Hello. Thank you now that error is gone. I hope im not overstaying my welcome. I have worked it on day and guess what? another error :/
Here we go..
Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at edu.cmu.sphinx.demo.robottest.RobotTest.main(Robot Test.java19)

I looked at the java file and this is where my main statement is (what tha!..):

public static void main(String[] args)

thats cool @ batch file (trial/error). I wish i knew how to do that cause eclipse is a pain in the hinny

Sorry, I have no idea how your IDE works.

i have a new error do i have to make a new post?

thank you sooo much for your help. You were awesome!