对Vector、ArrayList在迭代的时候若是同时对其进行修改就会抛出java.util.ConcurrentModificationException异常。html
好比遍历时对本身进行remove()就会出现java.util.ConcurrentModificationException异常：java
List<String> strings;
for(String s : strings){
if("".equals(s)){
strings.remove(s);
}
}
解决办法：web
List<String> strings;
List<String> rStrings = new ArrayList<>(rStrings);
for(String s :rStrings){
if("".equals(s)){
strings.remove(s);
}
}