我正在编写我的代码,并且得到了"java.util.ConcurrentModificationException“。System.out.println("3");它显示类似于以下内容的错误:java.util.ConcurrentModificationException: null
at java.util.ArrayList$Itr.checkForComodifica
exception is javax.persistence.RollbackException: Error while committing the transactionCaused by: java.util.ConcurrentModificationException: null for (Performance p : this.performances) {
p.setJob(null= <e
Error handler should be invoked with either an Event instance or a MessagingException
java.util.ConcurrentModificationException: null" 当应用程序在并行foreach调用服务中运行时,我看到了这个错误。