"Exception Handling" Java.lang.NoClassDefFoundError

Exception in thread "main" java.lang.noclassdeffounderror:org/apache/commons/lang/exception/ Nestableruntimeexception

Use environment: Project relay JSON, reported this exception.

Look at the JSON needs of the jar package, are imported.

Looked for the following reason, found commons-collections-3. X.jar and Commons-lang3-3. X.jar the problem of conflict.

Use the Commons-lang 2.X to do it.

(: http://www.cr173.com/soft/64964.html)

Add the package that JSON needs to use:Json-lib-2.2.3-jdk15.jar
Commons-beanutils-1.7.0.jar
Commons-httpclient-3.1.jar
Commons-lang-2.3.jar
Commons-logging-1.1.1.jar
Commons-collections-3.2.1.jar
Ezmorph-1.0.3.jar the exception that will occur if not:Java.lang.noclassdeffounderror:net/sf/ezmorph/morpher
Java.lang.noclassdeffounderror:org/apache/commons/collections/map/listorderedmap
Java.lang.noclassdeffounderror:org/apache/commons/beanutils/dynabean
Java.lang.noclassdeffounderror:org/apache/commons/codec/decoderexception
Java.lang.noclassdeffounderror:org/apache/commons/lang/exception/nestableruntimeexception
Java.lang.noclassdeffounderror:org/apache/commons/logging/logfactory

"Exception Handling" Java.lang.NoClassDefFoundError