{"id":65716,"date":"2025-05-03T11:09:08","date_gmt":"2025-05-03T03:09:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65716\/"},"modified":"2025-05-03T11:09:08","modified_gmt":"2025-05-03T03:09:08","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%83%bd%e5%ad%a6%e4%bc%9a-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65716\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u80fd\u5b66\u4f1a"},"content":{"rendered":"

\n java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\uff0c\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u3002\u521b\u5efa\u6570\u7ec4\u9700\u4f7f\u7528 [] \u6570\u7ec4\u540d = new [\u6570\u7ec4\u957f\u5ea6]; \u8bed\u6cd5\uff0c\u8bbf\u95ee\u5143\u7d20\u4f7f\u7528\u7d22\u5f15\uff08\u4ece 0 \u5f00\u59cb\uff09\uff0c\u904d\u5386\u4f7f\u7528 for \u5faa\u73af\u6216 foreach \u5faa\u73af\u3002java \u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff0c\u4f7f\u7528\u8bed\u6cd5 [][] \u6570\u7ec4\u540d = new [\u884c\u6570][\u5217\u6570]; \u521b\u5efa\u3002\u6570\u7ec4\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b9\u6cd5\uff0c\u5305\u62ec le\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u80fd\u5b66\u4f1a\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u638c\u63e1 Java \u6570\u7ec4<\/strong><\/p>\n

\u4e86\u89e3\u4ec0\u4e48\u662f Java \u6570\u7ec4<\/strong><\/p>\n

\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u4e00\u7cfb\u5217\u5177\u6709\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002Java \u6570\u7ec4\u4ee5\u8fde\u7eed\u7684\u5185\u5b58\u5757\u5b58\u50a8\u8fd9\u4e9b\u5143\u7d20\uff0c\u6bcf\u4e2a\u5143\u7d20\u90fd\u4f7f\u7528\u4e00\u4e2a\u7d22\u5f15\u6765\u8bbf\u95ee\u5b83\u4eec\u3002<\/p>\n

\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n

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

\u8981\u5728 Java \u4e2d\u521b\u5efa\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

<\u6570\u636e\u7c7b\u578b>[] \u6570\u7ec4\u540d = new <\u6570\u636e\u7c7b\u578b>[\u6570\u7ec4\u957f\u5ea6];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\u7684\u957f\u5ea6\u4e3a 10 \u7684\u6570\u7ec4\uff1a<\/p>\n
int[] myArray = new int[10];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
\u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4f8b\u5982\uff1a<\/p>\n
myArray[0] = 10;\nSystem.out.println(myArray[0]); \/\/ \u8f93\u51fa\uff1a10<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u904d\u5386\u6570\u7ec4<\/strong><\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 for \u5faa\u73af\u6216 foreach \u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\uff1a<\/p>\n
\/\/ \u4f7f\u7528 for \u5faa\u73af\nfor (int i = 0; i < myArray.length; i++) {\n    System.out.println(myArray[i]);\n}\n\n\/\/ \u4f7f\u7528 foreach \u5faa\u73af\nfor (int element : myArray) {\n    System.out.println(element);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u591a\u7ef4\u6570\u7ec4<\/strong><\/p>\n
Java \u4e5f\u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff0c\u5b83\u4eec\u662f\u6570\u7ec4\u7684\u6570\u7ec4\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n
<\u6570\u636e\u7c7b\u578b>[][] \u6570\u7ec4\u540d = new <\u6570\u636e\u7c7b\u578b>[\u884c\u6570][\u5217\u6570];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\u7684 3 \u884c 4 \u5217\u7684\u4e8c\u7ef4\u6570\u7ec4\uff1a<\/p>\n
int[][] my2DArray = new int[3][4];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u6570\u7ec4\u7684\u65b9\u6cd5<\/strong><\/p>\n
Java \u6570\u7ec4\u7c7b\u63d0\u4f9b\u4e86\u51e0\u4e2a\u6709\u7528\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\uff1a<\/p>\n
    \n
  • length\uff1a\u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6<\/li>\n
  • clone\uff1a\u521b\u5efa\u6570\u7ec4\u7684\u526f\u672c<\/li>\n
  • equals\uff1a\u6bd4\u8f83\u4e24\u4e2a\u6570\u7ec4\u662f\u5426\u76f8\u7b49<\/li>\n
  • fill\uff1a\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4<\/li>\n<\/ul>\n
    \u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n
      \n
    • \u786e\u5b9a\u6570\u7ec4\u7684\u9002\u5f53\u957f\u5ea6\uff0c\u907f\u514d\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\u3002<\/li>\n
    • \u59cb\u7ec8\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u8d8a\u754c\u3002<\/li>\n
    • \u4f18\u5148\u4f7f\u7528\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08\u4f8b\u5982 int[]\uff09\uff0c\u56e0\u4e3a\u5b83\u4eec\u6bd4\u5bf9\u8c61\u6570\u7ec4\u66f4\u6709\u6548\u3002<\/li>\n
    • \u907f\u514d\u4f7f\u7528\u6570\u7ec4\u5217\u8868\uff0c\u9664\u975e\u9700\u8981\u7ecf\u5e38\u4fee\u6539\u6570\u7ec4\u5927\u5c0f\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u80fd\u5b66\u4f1a\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\uff0c\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u3002\u521b\u5efa\u6570\u7ec4\u9700\u4f7f\u7528 [] \u6570\u7ec4\u540d = new [\u6570\u7ec4\u957f\u5ea6]; \u8bed\u6cd5\uff0c\u8bbf\u95ee\u5143\u7d20\u4f7f\u7528\u7d22\u5f15\uff08\u4ece 0 \u5f00\u59cb\uff09\uff0c\u904d\u5386\u4f7f\u7528 for \u5faa\u73af\u6216 foreach \u5faa\u73af\u3002java \u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff0c\u4f7f\u7528\u8bed\u6cd5 [][] \u6570\u7ec4\u540d = new [\u884c\u6570][\u5217\u6570]; \u521b\u5efa\u3002\u6570\u7ec4\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b9\u6cd5\uff0c\u5305\u62ec le \u5982\u4f55\u638c\u63e1 Java \u6570\u7ec4 \u4e86\u89e3\u4ec0\u4e48\u662f Java \u6570\u7ec4 \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u4e00\u7cfb\u5217\u5177\u6709\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002Java \u6570\u7ec4\u4ee5\u8fde\u7eed\u7684\u5185\u5b58\u5757\u5b58\u50a8\u8fd9\u4e9b\u5143\u7d20\uff0c\u6bcf\u4e2a\u5143\u7d20\u90fd\u4f7f\u7528\u4e00\u4e2a\u7d22\u5f15\u6765\u8bbf\u95ee\u5b83\u4eec\u3002 \u521b\u5efa\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8981\u5728 Java \u4e2d\u521b\u5efa\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a <\u6570\u636e\u7c7b\u578b>[] \u6570\u7ec4\u540d = new <\u6570\u636e\u7c7b\u578b>[\u6570\u7ec4\u957f\u5ea6]; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\u7684\u957f\u5ea6\u4e3a 10 \u7684\u6570\u7ec4\uff1a int[] myArray = new int[10]; \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4f8b\u5982\uff1a myArray[0] […]<\/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-65716","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65716","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=65716"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65716\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}