public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
list.add(\"aa\");
list.add(\"bb\");
list.add(\"cc\");
list.add(\"dd\");
System.out.println(list);
for (String s : list) {
if (s.equals(\"dd\")) {
list.remove(s);
}
}
System.out.println(list);
}
会报错
可以改用如下方式：
① 用迭代器 iterator进行遍历删除
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
list.add(\"aa\");
list.add(\"bb\");
list.add(\"cc\");
list.add(\"dd\");
System.out.println(list);
Iterator<String> iterator = list.iterator();
while (iterator.hasNext()) {
String next = iterator.next();
if (next.equals(\"dd\")) {
iterator.remove();
}
}
System.out.println(list);
}
②：使用最原始的 for循环
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
list.add(\"aa\");
list.add(\"bb\");
list.add(\"cc\");
list.add(\"dd\");
System.out.println(list);
for (int i = 0; i < list.size(); i++) {
String s = list.get(i);
if (s.equals(\"dd\")) {
list.remove(s);
}
}
System.out.println(list);
}
③：采用jdk8 Collection中新增的方法removeIf (个人推荐，简洁快捷新特性)
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
list.add(\"aa\");
list.add(\"bb\");
list.add(\"cc\");
list.add(\"dd\");
System.out.println(list);
list.removeIf(next -> next.equals(\"dd\"));
System.out.println(list);
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持自学编程网。
