{"id":37855,"date":"2024-11-26T14:28:25","date_gmt":"2024-11-26T06:28:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37855\/"},"modified":"2024-11-26T14:28:25","modified_gmt":"2024-11-26T06:28:25","slug":"java%e6%95%b0%e7%bb%84%e9%95%bf%e5%ba%a6%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37855\/","title":{"rendered":"java\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48"},"content":{"rendered":"

\n java \u6570\u7ec4\u7684\u957f\u5ea6\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u503c\uff0c\u53ef\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5e76\u901a\u8fc7 .length \u5b57\u6bb5\u8bbf\u95ee\u3002\u8be5\u957f\u5ea6\u7528\u4e8e\u5faa\u73af\u904d\u5386\u6570\u7ec4\u3001\u68c0\u67e5\u662f\u5426\u4e3a\u7a7a\u3001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff0c\u5e76\u4f5c\u4e3a\u6570\u636e\u7ed3\u6784\u7684\u952e\u54c8\u5e0c\u4ee3\u7801\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a<\/strong><\/p>\n

Java \u6570\u7ec4\u7684\u957f\u5ea6\u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u6570\u91cf\u7684\u8868\u793a\u3002\u5b83\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u503c\uff0c\u5728\u6570\u7ec4\u521b\u5efa\u65f6\u6307\u5b9a\uff0c\u5e76\u4e14\u5728\u6570\u7ec4\u751f\u547d\u5468\u671f\u5185\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n

\u8868\u793a\u65b9\u6cd5<\/strong><\/p>\n

Java \u4e2d\u6570\u7ec4\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 .length<\/strong> \u5b57\u6bb5\u6765\u8868\u793a\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] myArray = new int[5];\nint arrayLength = myArray.length; \/\/ 5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
.length<\/strong> \u5b57\u6bb5\u8fd4\u56de\u4e00\u4e2a int<\/strong> \u503c\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002<\/p>\n
\u4f5c\u7528<\/strong><\/p>\n
\u6570\u7ec4\u957f\u5ea6\u7528\u4e8e\uff1a<\/p>\n
    \n
  • \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20<\/li>\n
  • \u786e\u5b9a\u6570\u7ec4\u662f\u5426\u4e3a\u7a7a<\/li>\n
  • \u91cd\u65b0\u5206\u914d\u6570\u7ec4\u5927\u5c0f\uff08\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\uff09<\/li>\n
  • \u4f5c\u4e3a\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff08\u5982 HashMap\uff09\u4e2d\u952e\u7684\u54c8\u5e0c\u4ee3\u7801<\/li>\n<\/ul>\n
    \u793a\u4f8b<\/strong><\/p>\n
    \/\/ \u904d\u5386\u6570\u7ec4\u5143\u7d20\nfor (int i = 0; i < myArray.length; i++) {\n    System.out.println(myArray[i]);\n}\n\n\/\/ \u786e\u5b9a\u6570\u7ec4\u662f\u5426\u4e3a\u7a7a\nif (myArray.length == 0) {\n    System.out.println(\"\u6570\u7ec4\u4e3a\u7a7a\");\n}\n\n\/\/ \u91cd\u65b0\u5206\u914d\u6570\u7ec4\u5927\u5c0f\nmyArray = Arrays.copyOf(myArray, 10);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java \u6570\u7ec4\u7684\u957f\u5ea6\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u503c\uff0c\u53ef\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5e76\u901a\u8fc7 .length \u5b57\u6bb5\u8bbf\u95ee\u3002\u8be5\u957f\u5ea6\u7528\u4e8e\u5faa\u73af\u904d\u5386\u6570\u7ec4\u3001\u68c0\u67e5\u662f\u5426\u4e3a\u7a7a\u3001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff0c\u5e76\u4f5c\u4e3a\u6570\u636e\u7ed3\u6784\u7684\u952e\u54c8\u5e0c\u4ee3\u7801\u3002 Java \u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a Java \u6570\u7ec4\u7684\u957f\u5ea6\u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u6570\u91cf\u7684\u8868\u793a\u3002\u5b83\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u503c\uff0c\u5728\u6570\u7ec4\u521b\u5efa\u65f6\u6307\u5b9a\uff0c\u5e76\u4e14\u5728\u6570\u7ec4\u751f\u547d\u5468\u671f\u5185\u4fdd\u6301\u4e0d\u53d8\u3002 \u8868\u793a\u65b9\u6cd5 Java \u4e2d\u6570\u7ec4\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 .length \u5b57\u6bb5\u6765\u8868\u793a\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] myArray = new int[5]; int arrayLength = myArray.length; \/\/ 5 \u767b\u5f55\u540e\u590d\u5236 .length \u5b57\u6bb5\u8fd4\u56de\u4e00\u4e2a int \u503c\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002 \u4f5c\u7528 \u6570\u7ec4\u957f\u5ea6\u7528\u4e8e\uff1a \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20 \u786e\u5b9a\u6570\u7ec4\u662f\u5426\u4e3a\u7a7a \u91cd\u65b0\u5206\u914d\u6570\u7ec4\u5927\u5c0f\uff08\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\uff09 \u4f5c\u4e3a\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff08\u5982 HashMap\uff09\u4e2d\u952e\u7684\u54c8\u5e0c\u4ee3\u7801 \u793a\u4f8b \/\/ \u904d\u5386\u6570\u7ec4\u5143\u7d20 for (int i = 0; i < myArray.length; i++) { System.out.println(myArray[i]); } \/\/ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-37855","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37855","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=37855"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37855\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37855"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37855"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}