[rules-users] Drools Basic Example

[pprabhu59]

Hello All,

I just followed JBPM installation steps from JBoss Org, just created a new
drools project.
When i try to run it has a java application i am getting the following
error.
Checked the forums but unable to get concrete solution.

Build groovy files option has not been set one way or the other: use
'options.put(CompilerOptions.OPTIONG_BuildGroovyFiles,
CompilerOptions.ENABLED);'
java.lang.NoClassDefFoundError: org/eclipse/core/runtime/Plugin
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at
org.eclipse.jdt.internal.compiler.Compiler.initializeParser(Compiler.java:737)
	at org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:294)
	at org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:159)
	at
org.drools.commons.jci.compilers.EclipseJavaCompiler.compile(EclipseJavaCompiler.java:356)
	at
org.drools.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:49)
	at
org.drools.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:368)
	at
org.drools.compiler.DialectCompiletimeRegistry.compileAll(DialectCompiletimeRegistry.java:53)
	at org.drools.compiler.PackageRegistry.compileAll(PackageRegistry.java:70)
	at org.drools.compiler.PackageBuilder.compileAll(PackageBuilder.java:844)
	at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:801)
	at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:385)
	at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:563)
	at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:35)
	at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:46)
	at com.sample.DroolsTest.main(DroolsTest.java:23)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.Plugin
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	... 27 more


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