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  1. ,
    via javacodegeeks.com by Unknown author

    Causes : The Collection is internally modified, while a thread is iterating over it. OR after the creation of an iterator, the Collection is internally modified by any method other than the iterator’s own methods for removal and addition.

  2. ,
    via oracle.com by Unknown author

    In order to avoid more than one threads accessing or modifying the same object, you can synchronize them over the object, in order to allow only one thread to manipulate it over time.

Solutions on the web

via Spring JIRA by James Shaw, 1 year ago
Error creating bean with name 'myChild' defined in class MyConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public MyChild MyConfiguration.myChild()] threw exception; nested exception is java.util.ConcurrentModificationException
via Spring JIRA by James Shaw, 2 years ago
Error creating bean with name 'myChild' defined in class MyConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public MyChild MyConfiguration.myChild()] threw exception; nested exception is java.util.ConcurrentModificationException
via freebsd.org by Unknown author, 2 years ago
Error creating bean with name 'int' defined in class com.ubnt.oOOO.new: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public com.ubnt.oOOO.D.D com.ubnt.oOOO.new.int
via GitHub by anon12345
, 6 months ago
Error creating bean with name '?00000' defined in class com.ubnt.service.AppContext: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [com.ubnt.service.oO0O.D
via GitHub by spring-issuemaster
, 1 year ago
Error creating bean with name 'springSecurityFilterChain' defined in class org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration: Instantiation of bean failed; nested exception is
via Spring JIRA by Stepan Koltsov, 1 year ago
Error creating bean with name 'lamp' defined in class ru.yandex.commune.junk.stepancheg.spring.scope.Main$Conf: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public
java.util.ConcurrentModificationException: 	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)	at java.util.ArrayList$Itr.next(ArrayList.java:791)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:587)	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1338)	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:904)	at org.springframework.beans.factory.support.AbstractBeanFactory.containsBean(AbstractBeanFactory.java:370)	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.factoryContainsBean(ConfigurationClassEnhancer.java:323)	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:261)	at MyConfiguration$$EnhancerByCGLIB$$15938d63.myChild()	at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:601)	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:160)	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1031)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:927)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)	at org.springframework.context.annotation.AnnotationConfigApplicationContext.(AnnotationConfigApplicationContext.java:73)	at Test$1.run(Test.java:15)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)	at java.lang.Thread.run(Thread.java:722)