groovy - getResourceAsStream() doesn't see resource -


i want unpack resources jar file. structure of jar looks this:

my.jar     meta-inf     resources         my.exe         my.dll             namespace             unpackresourcefromthisclass.class

i want unpack my.exe , my.dll jar file. tried unpack files using code:

try {     inputstream = getclass().getresourceasstream("/resources/my.exe")     outputstream os = new fileoutputstream(new file(destdir))     files.copy(is, os)     os.close()     is.close() } catch (nullpointerexception e) {     e.printstacktrace(); } catch (filenotfoundexception e) {     e.printstacktrace(); } catch (securityexception e) {     e.printstacktrace(); }

but doesn't work. ideas? result error:

java.lang.nullpointerexception     @ java.nio.file.files.provider(files.java:65)     @ java.nio.file.files.newinputstream(files.java:106)     @ java.nio.file.files.copy(files.java:2884)     @ java_nio_file_files$copy.call(unknown source)     @ org.codehaus.groovy.runtime.callsite.callsitearray.defaultcall(callsitearray.java:42)     @ org.codehaus.groovy.runtime.callsite.abstractcallsite.call(abstractcallsite.java:108)     @ org.codehaus.groovy.runtime.callsite.abstractcallsite.call(abstractcallsite.java:120)     @ pl.ydp.gradle.is2k8task.getresources(is2k8task.groovy:84)     @ pl.ydp.gradle.is2k8task.build(is2k8task.groovy:30)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:601)     @ org.codehaus.groovy.reflection.cachedmethod.invoke(cachedmethod.java:90)     @ groovy.lang.metamethod.domethodinvoke(metamethod.java:233)     @ groovy.lang.metaclassimpl.invokemethod(metaclassimpl.java:1047)     @ groovy.lang.metaclassimpl.invokemethod(metaclassimpl.java:877)     @ org.gradle.api.internal.beandynamicobject$metaclassadapter.invokemethod(beandynamicobject.java:216)

this groovy code used in gradle custom task.

you seem writing java... not sure if round problem, above written in groovy as:

this.getclass().getresource( '/resources/my.exe' ).withinputstream { ris ->   new file( destdir ).withoutputstream { fos ->     fos << ris   } }

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