{"id":202716,"date":"2025-05-22T08:32:05","date_gmt":"2025-05-22T00:32:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202716\/"},"modified":"2025-05-22T08:32:05","modified_gmt":"2025-05-22T00:32:05","slug":"%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d-java-%e4%b8%ad%e5%b8%b8%e8%a7%81%e7%9a%84%e5%bc%82%e5%b8%b8%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202716\/","title":{"rendered":"\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b\uff1f<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729936045671cbaadac516.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5f02\u5e38\u662f\u4e0d\u53ef\u907f\u514d\u7684\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u63aa\u65bd\u6765\u5c3d\u91cf\u51cf\u5c11\u5b83\u4eec\u7684\u5f71\u54cd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u907f\u514d\u5e38\u89c1\u5f02\u5e38\u7c7b\u578b\u7684\u5efa\u8bae\uff1a<\/p>\n<p><strong>NullPointerException<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 <code>Objects.requireNonNull()<\/code> \u6765\u68c0\u67e5 <code>null<\/code> \u503c\u3002<\/li>\n<li>\u4e3a\u53ef\u80fd\u4e3a\u7a7a\u7684\u503c\u5206\u914d\u9ed8\u8ba4\u503c\u3002<\/li>\n<li>\u4f7f\u7528\u7a7a\u5f15\u7528\u68c0\u67e5\uff1a<code>if (variable != null)<\/code>\u3002<\/li>\n<\/ul>\n<p><strong>IndexOutOfBoundsException<\/strong><\/p>\n<ul>\n<li>\u5728\u8bbf\u95ee\u6570\u7ec4\u6216\u96c6\u5408\u5143\u7d20\u4e4b\u524d\u9a8c\u8bc1\u7d22\u5f15\u662f\u5426\u6709\u6548\u3002<\/li>\n<li>\u4f7f\u7528 <code>Arrays.copyOf()<\/code> \u6216 <code>List.subList()<\/code> \u590d\u5236\u6216\u63d0\u53d6\u90e8\u5206\u6570\u7ec4\u6216\u96c6\u5408\u3002<\/li>\n<\/ul>\n<p><strong>NumberFormatException<\/strong><\/p>\n<ul>\n<li>\u5728\u8fdb\u884c\u6570\u5b57\u8f6c\u6362\u4e4b\u524d\uff0c\u9a8c\u8bc1\u8f93\u5165\u662f\u5426\u4e3a\u6709\u6548\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u4f7f\u7528 <code>try-catch<\/code> \u5757\u6765\u5904\u7406\u8f6c\u6362\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><strong>IllegalArgumentException<\/strong><\/p>\n<ul>\n<li>\u5728\u65b9\u6cd5\u8c03\u7528\u4e2d\u9a8c\u8bc1\u53c2\u6570\u662f\u5426\u5408\u6cd5\u3002<\/li>\n<li>\u4f7f\u7528 <code>preconditions<\/code> \u5e93\u6765\u8fdb\u884c\u53c2\u6570\u9a8c\u8bc1\u3002<\/li>\n<\/ul>\n<p><strong>ConcurrentModificationException<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u5728\u904d\u5386\u96c6\u5408\u65f6\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n<li>\u4f7f\u7528 <code>Collections.unmodifiableList()<\/code> \u6216 <code>Collections.synchronizedList()<\/code> \u6765\u521b\u5efa\u4e0d\u53ef\u53d8\u6216\u540c\u6b65\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\u6bb5\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\nfor (int i = 0; i &lt; numbers.size(); i++) {\n    numbers.remove(i);\n}<\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u629b\u51fa <code>ConcurrentModificationException<\/code>\uff0c\u56e0\u4e3a\u6211\u4eec\u5728\u904d\u5386\u96c6\u5408\u7684\u540c\u65f6\u5bf9\u5176\u8fdb\u884c\u4e86\u4fee\u6539\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\nfor (int i = numbers.size() - 1; i &gt;= 0; i--) {\n    numbers.remove(i);\n}<\/pre>\n<p>\u6216\u8005\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <code>Iterator<\/code> \u6765\u904d\u5386\u96c6\u5408\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\nIterator&lt;Integer&gt; it = numbers.iterator();\nwhile (it.hasNext()) {\n    it.remove();\n}<\/pre>\n<p>\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u5efa\u8bae\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b\uff0c\u4ece\u800c\u7f16\u5199\u66f4\u5065\u58ee\u548c\u53ef\u9760\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8ejava,\u5f02\u5e38\u5904\u7406\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u907f\u514d Java \u4e2d\u5e38\u89c1\u7684\u5f02\u5e38&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202716","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202716"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202716\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}