[jira] [Created] (GROOVY-11304) The script running reports a null pointer.

[cong yang (Jira)]

cong yang created GROOVY-11304:
----------------------------------

             Summary: The script running reports a null pointer.
                 Key: GROOVY-11304
                 URL: https://issues.apache.org/jira/browse/GROOVY-11304
             Project: Groovy
          Issue Type: Bug
          Components: class generator
    Affects Versions: 4.0.18
            Reporter: cong yang


code:

 
import groovy.transform.CompileStatic
import java.util.function.Function
import java.util.stream.Collectors

@CompileStatic
class Main {
static void main(String[] args) {

List<String> list = ["aaaa", "bbbb", "aaa"]

Map<String, Integer> map = list.stream()
.collect(Collectors.toMap(Function.identity(), k -> 1, \{ a, b -> a + b }))
}
}
 

error:

Exception in thread "main" java.lang.NullPointerException
    at com.sun.beans.TypeResolver.resolve(TypeResolver.java:203)
    at com.sun.beans.TypeResolver.resolve(TypeResolver.java:218)
    at com.sun.beans.TypeResolver.resolveInClass(TypeResolver.java:96)
    at 
java.beans.FeatureDescriptor.getParameterTypes(FeatureDescriptor.java:387)
    at java.beans.MethodDescriptor.setMethod(MethodDescriptor.java:116)
    at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:72)
    at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:56)
    at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1205)
    at java.beans.Introspector.getBeanInfo(Introspector.java:426)
    at java.beans.Introspector.getBeanInfo(Introspector.java:173)
    at 
groovy.lang.MetaClassImpl.lambda$addProperties$25(MetaClassImpl.java:3466)
    at java.security.AccessController.doPrivileged(Native Method)
    at groovy.lang.MetaClassImpl.doPrivileged(MetaClassImpl.java:3519)
    at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:3466)
    at groovy.lang.MetaClassImpl.reinitialize(MetaClassImpl.java:3448)
    at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:3441)
    at 
org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:272)
    at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:314)
    at 
org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:269)
    at 
org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:596)
    at 
groovy.lang.GroovyObjectSupport.getDefaultMetaClass(GroovyObjectSupport.java:46)
    at groovy.lang.GroovyObjectSupport.<init>(GroovyObjectSupport.java:32)
    at groovy.lang.Closure.<init>(Closure.java:215)
    at Main$_main_lambda1.<init>(Main.groovy)
    at Main.main(Main.groovy:12)

 

 

 



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