Oracle-OCP19C认证精品班
if ("test1".equals(iterator.next())){
iterator.remove();
}
}
System.out.println(list.toString());}Exception in thread "main" java.lang.UnsupportedOperationException
at java.util.concurrent.CopyOnWriteArrayList$COWIterator.remove(CopyOnWriteArrayList.java:1178)
