{"id":34933,"date":"2024-11-26T08:38:57","date_gmt":"2024-11-26T00:38:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34933\/"},"modified":"2024-11-26T08:38:57","modified_gmt":"2024-11-26T00:38:57","slug":"java%e6%80%8e%e4%b9%88%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84a","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34933\/","title":{"rendered":"java\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4a"},"content":{"rendered":"

\n \u5728 java \u4e2d\u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u3002\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u521b\u5efa\u5b57\u9762\u91cf\u3002\u4f7f\u7528 arrays \u7c7b\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528\u6d41\u4f7f\u7528 declarative \u98ce\u683c\u64cd\u4f5c\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4a\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u7528 Java \u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n

\u521b\u5efa\u6570\u7ec4\u662f Java \u4e2d\u5b58\u50a8\u5143\u7d20\u7684\u6709\u7528\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u5728 Java \u4e2d\u521b\u5efa\u6570\u7ec4\u7684\u4e0d\u540c\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528 new \u5173\u952e\u5b57<\/strong><\/p>\n

\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

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

int[] a = new int[5];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u6574\u578b\u5143\u7d20\u7684\u6570\u7ec4\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf a \u4e2d\u3002<\/p>\n
2. \u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf<\/strong><\/p>\n
\u6570\u7ec4\u5b57\u9762\u91cf\u662f\u521b\u5efa\u5b57\u9762\u91cf\u7684\u53e6\u4e00\u79cd\u5feb\u6377\u65b9\u6cd5\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
int[] a = {1, 2, 3, 4, 5};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u5143\u7d20 [1, 2, 3, 4, 5] \u7684\u6574\u578b\u6570\u7ec4\u3002<\/p>\n
3. \u4f7f\u7528\u586b\u5145\u6570\u7ec4<\/strong><\/p>\n
Arrays \u7c7b\u63d0\u4f9b\u4e86 fill \u65b9\u6cd5\uff0c\u53ef\u7528\u4e8e\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
int[] a = new int[5];\nArrays.fill(a, 0);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u6574\u578b\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u6240\u6709\u5143\u7d20\u7684\u503c\u90fd\u4e3a 0\u3002<\/p>\n
4. \u4f7f\u7528\u6d41<\/strong><\/p>\n
Java 8 \u4e2d\u5f15\u5165\u4e86\u6d41\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u4f7f\u7528 declarative \u98ce\u683c\u64cd\u4f5c\u6570\u7ec4\u7684\u7b80\u6d01\u65b9\u6cd5\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
int[] a = IntStream.range(0, 5).toArray();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5143\u7d20 [0, 1, 2, 3, 4] \u7684\u6574\u578b\u6570\u7ec4\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4a\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":"
\u5728 java \u4e2d\u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u3002\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u521b\u5efa\u5b57\u9762\u91cf\u3002\u4f7f\u7528 arrays \u7c7b\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528\u6d41\u4f7f\u7528 declarative \u98ce\u683c\u64cd\u4f5c\u6570\u7ec4\u3002 \u5982\u4f55\u7528 Java \u521b\u5efa\u6570\u7ec4 \u521b\u5efa\u6570\u7ec4\u662f Java \u4e2d\u5b58\u50a8\u5143\u7d20\u7684\u6709\u7528\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u5728 Java \u4e2d\u521b\u5efa\u6570\u7ec4\u7684\u4e0d\u540c\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 new \u5173\u952e\u5b57 \u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] a = new int[5]; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u6574\u578b\u5143\u7d20\u7684\u6570\u7ec4\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf a \u4e2d\u3002 2. \u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf \u6570\u7ec4\u5b57\u9762\u91cf\u662f\u521b\u5efa\u5b57\u9762\u91cf\u7684\u53e6\u4e00\u79cd\u5feb\u6377\u65b9\u6cd5\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a int[] a = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u5143\u7d20 [1, 2, 3, 4, 5] \u7684\u6574\u578b\u6570\u7ec4\u3002 […]<\/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-34933","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34933","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=34933"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34933\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}