{"id":195,"date":"2023-07-19T23:40:28","date_gmt":"2023-04-29T19:59:18","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8java-list%e5%92%8clistarray%e4%b8%ad%e7%9a%84remove%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-01T02:13:05","modified_gmt":"2025-07-31T18:13:05","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8java-list%e5%92%8clistarray%e4%b8%ad%e7%9a%84remove%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8java-list%e5%92%8clistarray%e4%b8%ad%e7%9a%84remove%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java List\u4e0eArrayList\uff1a\u6df1\u5165\u89e3\u6790remove()\u65b9\u6cd5\u7684\u4f7f\u7528\u4e0e\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"

Java List `remove()` \u65b9\u6cd5\u7b80\u4ecb<\/h3>\n

Java\u7684List<\/code>\u63a5\u53e3\u4e2d\u7684remove()<\/code>\u65b9\u6cd5\u7528\u4e8e\u4ece\u5217\u8868\u4e2d\u79fb\u9664\u5143\u7d20\u3002ArrayList<\/code>\u662fList<\/code>\u63a5\u53e3\u6700\u5e38\u7528\u7684\u5b9e\u73b0\u7c7b\uff0c\u56e0\u6b64\u672c\u6587\u4e2d\u7684\u793a\u4f8b\u5c06\u4e3b\u8981\u4f7f\u7528ArrayList<\/code>\u7684remove()<\/code>\u65b9\u6cd5\u3002<\/p>\n

Java List \u7684 `remove()` \u65b9\u6cd5\u8be6\u89e3<\/h2>\n

\u4ece\u5217\u8868\u4e2d\u5220\u9664\u5143\u7d20\u4e3b\u8981\u6709\u4e24\u79cdremove()<\/code>\u65b9\u6cd5\uff1a<\/p>\n

    \n
  1. E remove(int index)<\/code>:<\/strong> \u8fd9\u4e2a\u65b9\u6cd5\u79fb\u9664\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u3002\u968f\u540e\u7684\u5143\u7d20\u4f1a\u5411\u5de6\u79fb\u52a8\u4e00\u4e2a\u4f4d\u7f6e\u3002\u5982\u679c\u6307\u5b9a\u7684\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\uff08\u5373\u5c0f\u4e8e0\u6216\u5927\u4e8e\u7b49\u4e8e\u5217\u8868\u5927\u5c0f\uff09\uff0c\u5219\u4f1a\u629b\u51faIndexOutOfBoundsException<\/code>\u5f02\u5e38\u3002\u5982\u679c\u5217\u8868\u7684\u5b9e\u73b0\u4e0d\u652f\u6301\u6b64\u64cd\u4f5c\uff0c\u5219\u4f1a\u629b\u51faUnsupportedOperationException<\/code>\u5f02\u5e38\u3002<\/li>\n
  2. boolean remove(Object o)<\/code>:<\/strong> \u8fd9\u4e2a\u65b9\u6cd5\u79fb\u9664\u5217\u8868\u4e2d\u7b2c\u4e00\u4e2a\u51fa\u73b0\u7684\u6307\u5b9a\u5bf9\u8c61\u3002\u5982\u679c\u5217\u8868\u4e0d\u5305\u542b\u7ed9\u5b9a\u5143\u7d20\uff0c\u5219\u5217\u8868\u4fdd\u6301\u4e0d\u53d8\u3002\u5982\u679c\u6210\u529f\u4ece\u5217\u8868\u4e2d\u79fb\u9664\u4e86\u4e00\u4e2a\u5143\u7d20\uff0c\u5219\u8fd4\u56detrue<\/code>\uff0c\u5426\u5219\u8fd4\u56defalse<\/code>\u3002\u5982\u679c\u5bf9\u8c61\u4e3anull<\/code>\u4e14\u5217\u8868\u4e0d\u652f\u6301null<\/code>\u5143\u7d20\uff0c\u5219\u4f1a\u629b\u51faNullPointerException<\/code>\u5f02\u5e38\u3002\u5982\u679c\u5217\u8868\u7684\u5b9e\u73b0\u4e0d\u652f\u6301\u6b64\u65b9\u6cd5\uff0c\u5219\u4f1a\u629b\u51faUnsupportedOperationException<\/code>\u5f02\u5e38\u3002<\/li>\n<\/ol>\n

    \u63a5\u4e0b\u6765\uff0c\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e9b\u793a\u4f8b\u6765\u5177\u4f53\u4e86\u89e3remove()<\/code>\u65b9\u6cd5\u7684\u7528\u6cd5\u3002<\/p>\n

    \u4ece\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u5220\u9664\u5143\u7d20 (`E remove(int index)`)<\/h2>\n

    \u8fd9\u4e2a\u4f8b\u5b50\u5c06\u8be6\u7ec6\u63a2\u8ba8E remove(int index)<\/code>\u65b9\u6cd5\u7684\u4f7f\u7528\u3002<\/p>\n

    List<\/span><<\/span>String<\/span>><\/span><\/span> list =<\/span> new<\/span> ArrayList<\/span><<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span>\r\n\r\nlist.<\/span>add<\/span>(<\/span>\"A\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"B\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"C\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"C\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"B\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"A\"<\/span>)<\/span>;<\/span>\r\n\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\n\r\nString<\/span> removedStr =<\/span> list.<\/span>remove<\/span>(<\/span>1<\/span>)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>removedStr)<\/span>;<\/code><\/pre>\n
    \u9996\u5148\uff0c\u8fd9\u6bb5\u4ee3\u7801\u6784\u5efa\u5e76\u6253\u5370\u4e86\u4e00\u4e2a\u5217\u8868\uff1a<\/p>\n
    \u8f93\u51fa<\/div>\n
    [A, B, C, C, B, A]<\/code><\/pre>\n
    \u7136\u540e\uff0c\u4ee3\u7801\u6267\u884cremove(1)<\/code>\u6765\u5220\u9664\u7d22\u5f15\u4e3a1\u7684\u5143\u7d20\u3002\u6700\u540e\uff0c\u5b83\u6253\u5370\u51fa\u65b0\u7684\u5217\u8868\u7ed3\u679c\uff0c\u5e76\u6253\u5370\u51fa\u88ab\u79fb\u9664\u7684\u5143\u7d20\u3002<\/p>\n
    \u8f93\u51fa<\/div>\n
    [A, C, C, B, A]\r\nB<\/code><\/pre>\n
    \u53ef\u4ee5\u770b\u5230\uff0c\u7d22\u5f15\u4e3a1\u5904\u7684\u5143\u7d20\u201cB\u201d\u5df2\u88ab\u6210\u529f\u79fb\u9664\u3002<\/p>\n
    2. \u4f7f\u7528 `remove(int index)` \u65b9\u6cd5\u65f6\u51fa\u73b0\u8d8a\u754c\u5f02\u5e38<\/h2>\n
    \u8fd9\u662f\u6587\u7ae0\u300a\u5982\u4f55\u4f7f\u7528Java List\u548cListArray\u4e2d\u7684remove()\u65b9\u6cd5\u300b\u7684\u7b2c2\u90e8\u5206\uff08\u51715\u90e8\u5206\uff09\u3002<\/p>\n
    \u5185\u5bb9\u7247\u6bb5: \u5f53\u7d22\u5f15\u8d85\u51fa\u5217\u8868\u8303\u56f4\u65f6\uff0c\u672c\u793a\u4f8b\u5c06\u63a2\u8ba8 `E remove(int index)` \u65b9\u6cd5\u7684\u884c\u4e3a\u3002<\/p>\n
    List<\/span><<\/span>String<\/span>><\/span><\/span> list =<\/span> new<\/span> ArrayList<\/span><<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span>\r\n\r\nlist.<\/span>add<\/span>(<\/span>\"A\"<\/span>)<\/span>;<\/span>\r\n\r\nString<\/span> removedStr =<\/span> list.<\/span>remove<\/span>(<\/span>10<\/span>)<\/span>;<\/span>\r\n<\/code><\/pre>\n
    \u8fd9\u6bb5\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u957f\u5ea6\u4e3a1\u7684\u5217\u8868\u3002\u7136\u800c\uff0c\u5f53\u4ee3\u7801\u5c1d\u8bd5\u79fb\u9664\u7d22\u5f15\u4e3a10\u7684\u5143\u7d20\u65f6\uff0c\u4f1a\u53d1\u751f\u4ee5\u4e0b\u60c5\u51b5\uff1a<\/p>\n
    <\/code><\/pre>\n
    \u8f93\u51fa<\/div>\n
    Exception in thread \"main\" java.lang.IndexOutOfBoundsException: Index 10 out of bounds for length 1 at java.base\/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64) at java.base\/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70) at java.base\/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248) at java.base\/java.util.Objects.checkIndex(Objects.java:372) at java.base\/java.util.ArrayList.remove(ArrayList.java:535) at com.Olivia.java.ArrayListRemove.main(ArrayListRemove.java:19)<\/code><\/pre>\n
    \u8fd9\u4e2a\u5c1d\u8bd5\u629b\u51fa\u4e86 `IndexOutOfBoundsException` \u5f02\u5e38\u3002<\/p>\n
    3. \u4e0d\u53ef\u4fee\u6539\u5217\u8868\u7684 `remove()` \u64cd\u4f5c\u5f15\u53d1 `UnsupportedOperationException` \u7684\u793a\u4f8b<\/h2>\n
    `List.of()` \u65b9\u6cd5\u521b\u5efa\u7684\u5217\u8868\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u56e0\u6b64\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/p>\n
    List<\/span><<\/span>String<\/span>><\/span><\/span> list =<\/span> List<\/span>.<\/span>of<\/span>(<\/span>\"a\"<\/span>,<\/span> \"b\"<\/span>)<\/span>;<\/span>\r\n\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\n\r\nString<\/span> removedStr =<\/span> list.<\/span>remove<\/span>(<\/span>1<\/span>)<\/span>;<\/span>\r\n\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>removedStr)<\/span>;<\/span>\r\n<\/code><\/pre>\n
    \u9996\u5148\uff0c\u6b64\u4ee3\u7801\u6784\u5efa\u5e76\u6253\u5370\u4e00\u4e2a\u4e0d\u53ef\u53d8\u5217\u8868\uff1a<\/p>\n
    <\/code><\/pre>\n
      \n
    1. \n
      \u8f93\u51fa<\/div>\n<\/li>\n<\/ol>\n
      [<\/span>a, b]<\/span><\/li>\n<\/ol>\n
      <\/code><\/pre>\n
       <\/p>\n
      <\/code><\/pre>\n
      \u7136\u540e\u4ee3\u7801\u5c1d\u8bd5\u4f7f\u7528 remove()<\/code> \u65b9\u6cd5\u6765\u79fb\u9664\u7d22\u5f15\u4e3a1\u7684\u5143\u7d20\u3002<\/p>\n
      <\/code><\/pre>\n
        \n
      1. \u7ebf\u7a0b “main” \u4e2d\u53d1\u751f\u5f02\u5e38 java.lang.UnsupportedOperationException<\/code><\/li>\n
      2. \u4f4d\u4e8e java.base\/java.util.ImmutableCollections.uoe(ImmutableCollections.java:142)<\/code><\/li>\n
      3. \u4f4d\u4e8e java.base\/java.util.ImmutableCollections$AbstractImmutableList.remove(ImmutableCollections.java:258)<\/code><\/li>\n
      4. \u4f4d\u4e8e TestRemoveList.main(TestRemoveList.java:12)<\/code><\/li>\n<\/ol>\n
        <\/code><\/pre>\n
         <\/p>\n
        <\/code><\/pre>\n
        \u8fd9\u4e2a\u5c1d\u8bd5\u4f1a\u629b\u51fa UnsupportedOperationException<\/code> \u5f02\u5e38\u3002\u5982\u679c\u4f60\u5c1d\u8bd5\u4f7f\u7528 list.remove(\"a\")<\/code> \u6216 list.remove(\"b\")<\/code> \u4e5f\u4f1a\u629b\u51fa UnsupportedOperationException<\/code> \u5f02\u5e38\u3002<\/p>\n
        4. \u4ece\u5217\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5bf9\u8c61<\/h2>\n
        \u8fd9\u662f\u6587\u7ae0\u300a\u5982\u4f55\u4f7f\u7528Java List\u548cArrayList\u4e2d\u7684remove()<\/code>\u65b9\u6cd5\u300b\u7684\u7b2c4\u90e8\u5206\uff08\u51715\u90e8\u5206\uff09\u3002<\/p>\n
        \u672c\u793a\u4f8b\u5c06\u6df1\u5165\u63a2\u8ba8 boolean remove(Object o)<\/code> \u65b9\u6cd5\u3002<\/p>\n
        List<\/span><<\/span>String<\/span>><\/span><\/span> list =<\/span> new<\/span> ArrayList<\/span><<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span>\r\n\r\nlist.<\/span>add<\/span>(<\/span>\"A\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"B\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"C\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"C\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"B\"<\/span>)<\/span>;<\/span>\r\nlist.<\/span>add<\/span>(<\/span>\"A\"<\/span>)<\/span>;<\/span>\r\n\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\n\r\nboolean<\/span> isRemoved =<\/span> list.<\/span>remove<\/span>(<\/span>\"C\"<\/span>)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>isRemoved)<\/span>;<\/span>\r\n\r\nisRemoved =<\/span> list.<\/span>remove<\/span>(<\/span>\"X\"<\/span>)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>list)<\/span>;<\/span>\r\nSystem<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>isRemoved)<\/span>;<\/span>\r\n<\/code><\/pre>\n
        \u9996\u5148\uff0c\u8fd9\u6bb5\u4ee3\u7801\u6784\u5efa\u5e76\u8f93\u51fa\u4e00\u4e2a\u5217\u8868\u3002<\/p>\n
        \u8f93\u51fa<\/div>\n
        [A, B, C, C, B, A]\r\n<\/code><\/pre>\n
        \u63a5\u4e0b\u6765\uff0c\u8fd9\u6bb5\u4ee3\u7801\u6267\u884c remove(\"C\")<\/code> \u6765\u5220\u9664\u7b2c\u4e00\u4e2a\u51fa\u73b0\u7684 “C”\u3002\u7136\u540e\uff0c\u5b83\u6253\u5370\u51fa\u7ed3\u679c\u5217\u8868\uff0c\u5e76\u6253\u5370\u64cd\u4f5c\u7684\u5e03\u5c14\u503c\u2014\u2014true<\/code>\u3002<\/p>\n
        \u8f93\u51fa<\/div>\n
        [A, B, C, B, A] true\r\n<\/code><\/pre>\n
        \u7136\u540e\uff0c\u8fd9\u6bb5\u4ee3\u7801\u6267\u884c remove(\"X\")<\/code>\uff0c\u4f46\u662f\u5217\u8868\u4e2d\u6ca1\u6709 “X” \u8fd9\u4e2a\u5b9e\u4f8b\uff0c\u6240\u4ee5\u5217\u8868\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u6700\u540e\uff0c\u5b83\u6253\u5370\u51fa\u5217\u8868\uff0c\u5e76\u6253\u5370\u64cd\u4f5c\u7684\u5e03\u5c14\u503c\u2014\u2014false<\/code>\u3002<\/p>\n
        \u8f93\u51fa<\/div>\n
        [A, B, C, B, A] false\r\n<\/code><\/pre>\n
        \u7ed3\u8bba<\/h2>\n
        \u672c\u6587\u4e3a\u60a8\u8be6\u7ec6\u8bb2\u89e3\u4e86Java List\u63a5\u53e3\u4e2d\u7684remove()<\/code>\u65b9\u6cd5\u3002<\/p>\n
        \u63a8\u8350\u9605\u8bfb\uff1a<\/h3>\n