{"id":38540,"date":"2024-11-26T15:07:52","date_gmt":"2024-11-26T07:07:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38540\/"},"modified":"2024-11-26T15:07:52","modified_gmt":"2024-11-26T07:07:52","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e5%85%83%e7%b4%a0%e5%8a%a0%e5%85%a5%e5%88%b0%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38540\/","title":{"rendered":"java\u600e\u4e48\u5c06\u5143\u7d20\u52a0\u5165\u5230\u6570\u7ec4"},"content":{"rendered":"

\n \u5411 java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u7684\u65b9\u6cd5\u6839\u636e\u6570\u7ec4\u7c7b\u578b\u800c\u5f02\uff1a\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\uff1a\u4f7f\u7528 length \u5b57\u6bb5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u672b\u5c3e\u3002\u5bf9\u8c61\u6570\u7ec4\uff1a\u4f7f\u7528 [] \u64cd\u4f5c\u7b26\u6216 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u3002arraylist\uff1a\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u63d0\u4f9b\u66f4\u7075\u6d3b\u7684\u5c3a\u5bf8\u8c03\u6574\u3002\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\uff0c\u901a\u8fc7\u68c0\u67e5 length \u5b57\u6bb5\u6216 size() \u65b9\u6cd5\u786e\u4fdd\u5143\u7d20\u7d22\u5f15\u5728\u6709\u6548\u8303\u56f4\u5185\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5c06\u5143\u7d20\u52a0\u5165\u5230\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5c06\u5143\u7d20\u6dfb\u52a0\u5230 Java \u6570\u7ec4<\/strong><\/p>\n

Java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u6765\u5b58\u50a8\u56fa\u5b9a\u957f\u5ea6\u7684\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u6dfb\u52a0\u5143\u7d20\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u7c7b\u578b\u3002<\/p>\n

\u539f\u59cb\u7c7b\u578b\u6570\u7ec4<\/strong><\/p>\n

\u8981\u5411\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5b57\u6bb5\uff1a<\/p>\n

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

int[] arr = new int[5];\narr[arr.length] = 10;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u628a\u5143\u7d20 10 \u6dfb\u52a0\u5230\u6570\u7ec4\u7684\u672b\u5c3e\u3002<\/p>\n
\u5bf9\u8c61\u6570\u7ec4<\/strong><\/p>\n
\u8981\u5411\u5bf9\u8c61\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u6216 [] \u64cd\u4f5c\u7b26\uff1a<\/p>\n
String[] arr = new String[5];\narr[0] = \"Java\"; \/\/ \u4f7f\u7528 [] \u64cd\u4f5c\u7b26\narr.add(\"Programming\"); \/\/ \u4f7f\u7528 add() \u65b9\u6cd5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
ArrayList<\/strong><\/p>\n
ArrayList \u662f\u4e00\u79cd\u53ef\u53d8\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u7684\u65b9\u6cd5\u6765\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n
ArrayList<String> arr = new ArrayList<>();\narr.add(\"Java\");\narr.add(\"Programming\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38<\/strong><\/p>\n
\u5728\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u65f6\uff0c\u91cd\u8981\u7684\u662f\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\u3002\u8fd9\u610f\u5473\u7740\u786e\u4fdd\u6dfb\u52a0\u7684\u5143\u7d20\u7d22\u5f15\u5728\u6570\u7ec4\u7684\u6709\u6548\u8303\u56f4\u5185\u3002\u53ef\u4ee5\u4f7f\u7528 length \u5b57\u6bb5\u6216 size() \u65b9\u6cd5\uff08\u5bf9\u4e8e ArrayList\uff09\u6765\u68c0\u67e5\u6570\u7ec4\u7684\u8fb9\u754c\u3002<\/p>\n
\u793a\u4f8b<\/strong><\/p>\n
int[] arr = new int[5];\nfor (int i = 0; i < arr.length; i++) {\n    arr[i] = i * 10;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u5411\u6570\u7ec4\u6dfb\u52a0 5 \u4e2a\u5143\u7d20\uff0c\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f 10 \u7684\u500d\u6570\u3002<\/p>\n
\u53c2\u8003\u8d44\u6599\uff1a<\/strong><\/p>\n
    \n
  • [Java \u6570\u7ec4\u6587\u6863](https:\/\/docs..com\/javase\/tutorial\/java\/nutsandbolts\/arrays.html)<\/li>\n
  • [Java ArrayList \u6587\u6863](https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/util\/ArrayList.html)<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5c06\u5143\u7d20\u52a0\u5165\u5230\u6570\u7ec4\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":"
    \u5411 java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u7684\u65b9\u6cd5\u6839\u636e\u6570\u7ec4\u7c7b\u578b\u800c\u5f02\uff1a\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\uff1a\u4f7f\u7528 length \u5b57\u6bb5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u672b\u5c3e\u3002\u5bf9\u8c61\u6570\u7ec4\uff1a\u4f7f\u7528 [] \u64cd\u4f5c\u7b26\u6216 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u3002arraylist\uff1a\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u63d0\u4f9b\u66f4\u7075\u6d3b\u7684\u5c3a\u5bf8\u8c03\u6574\u3002\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\uff0c\u901a\u8fc7\u68c0\u67e5 length \u5b57\u6bb5\u6216 size() \u65b9\u6cd5\u786e\u4fdd\u5143\u7d20\u7d22\u5f15\u5728\u6709\u6548\u8303\u56f4\u5185\u3002 \u5982\u4f55\u5c06\u5143\u7d20\u6dfb\u52a0\u5230 Java \u6570\u7ec4 Java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u6765\u5b58\u50a8\u56fa\u5b9a\u957f\u5ea6\u7684\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u6dfb\u52a0\u5143\u7d20\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u7c7b\u578b\u3002 \u539f\u59cb\u7c7b\u578b\u6570\u7ec4 \u8981\u5411\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5b57\u6bb5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = new int[5]; arr[arr.length] = 10; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u628a\u5143\u7d20 10 \u6dfb\u52a0\u5230\u6570\u7ec4\u7684\u672b\u5c3e\u3002 \u5bf9\u8c61\u6570\u7ec4 \u8981\u5411\u5bf9\u8c61\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u6216 [] \u64cd\u4f5c\u7b26\uff1a String[] arr = new String[5]; arr[0] = “Java”; \/\/ \u4f7f\u7528 [] \u64cd\u4f5c\u7b26 […]<\/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-38540","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38540","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=38540"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38540\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}