{"id":39751,"date":"2024-11-26T12:42:32","date_gmt":"2024-11-26T04:42:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39751\/"},"modified":"2024-11-26T12:42:32","modified_gmt":"2024-11-26T04:42:32","slug":"java%e6%80%8e%e4%b9%88%e6%8a%8a%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8a%a0%e5%88%b0%e6%95%b0%e7%bb%84%e9%87%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39751\/","title":{"rendered":"java\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5230\u6570\u7ec4\u91cc"},"content":{"rendered":"

\n \u8981\u5728 java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u4e0b\u5217\u6b65\u9aa4\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u3002\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528\u5faa\u73af\u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u6570\u7ec4\u526f\u672c\u5e76\u6dfb\u52a0\u65b0\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5230\u6570\u7ec4\u91cc\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230 Java \u6570\u7ec4\u4e2d<\/strong><\/p>\n

\u8981\u5728 Java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n

String[] myArray = new String[size];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff0csize \u662f\u8981\u521b\u5efa\u7684\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
2. \u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u9012\u589e\u3002\u8981\u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u7d22\u5f15\uff1a<\/p>\n
myArray[index] = \"string\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u5faa\u73af\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u5411\u6570\u7ec4\u6dfb\u52a0\u591a\u4e2a\u5b57\u7b26\u4e32\uff1a<\/p>\n
for (int i = 0; i < myArray.length; i++) {\n    myArray[i] = \"string\" + i;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n
Arrays.fill() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a\u7ed9\u5b9a\u503c\uff1a<\/p>\n
Arrays.fill(myArray, \"string\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
5. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n
Arrays.copyOf() \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u6570\u7ec4\u7684\u4e00\u4e2a\u65b0\u526f\u672c\uff0c\u5e76\u5411\u5176\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20\uff1a<\/p>\n
String[] newArray = Arrays.copyOf(myArray, myArray.length + 1);\nnewArray[newArray.length - 1] = \"new string\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u793a\u4f8b<\/strong><\/p>\n
String[] names = new String[3];\nnames[0] = \"John\";\nnames[1] = \"Mary\";\nnames[2] = \"Bob\";\n\nfor (String name : names) {\n    System.out.println(name);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
John\nMary\nBob<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5230\u6570\u7ec4\u91cc\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":"
\u8981\u5728 java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u4e0b\u5217\u6b65\u9aa4\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u3002\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528\u5faa\u73af\u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u6570\u7ec4\u526f\u672c\u5e76\u6dfb\u52a0\u65b0\u5143\u7d20\u3002 \u5982\u4f55\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230 Java \u6570\u7ec4\u4e2d \u8981\u5728 Java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4 String[] myArray = new String[size]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0csize \u662f\u8981\u521b\u5efa\u7684\u6570\u7ec4\u7684\u5927\u5c0f\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u9012\u589e\u3002\u8981\u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u7d22\u5f15\uff1a myArray[index] = “string”; \u767b\u5f55\u540e\u590d\u5236 3. \u5faa\u73af\u6dfb\u52a0\u5143\u7d20 \u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u5411\u6570\u7ec4\u6dfb\u52a0\u591a\u4e2a\u5b57\u7b26\u4e32\uff1a for (int i = 0; i < myArray.length; i++) { myArray[i] = “string” + i; } \u767b\u5f55\u540e\u590d\u5236 4. \u4f7f\u7528 […]<\/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-39751","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39751","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=39751"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39751\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}