{"id":65324,"date":"2025-05-03T13:16:24","date_gmt":"2025-05-03T05:16:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65324\/"},"modified":"2025-05-03T13:16:24","modified_gmt":"2025-05-03T05:16:24","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%ae%a1%e7%ae%97%e7%9a%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65324\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u7684"},"content":{"rendered":"

\n java \u6570\u7ec4\u662f\u5b58\u50a8\u540c\u7c7b\u578b\u6570\u636e\u7684\u6709\u5e8f\u96c6\u5408\uff0c\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u6570\u7ec4\u8ba1\u7b97\u6d89\u53ca\u8bbf\u95ee\u5143\u7d20\u3001\u4fee\u6539\u5143\u7d20\u3001\u8ba1\u7b97\u957f\u5ea6\u3001\u904d\u5386\u6570\u7ec4\u548c\u521d\u59cb\u5316\u6570\u7ec4\u3002\u591a\u7ef4\u6570\u7ec4\u5141\u8bb8\u5b58\u50a8\u5176\u4ed6\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u7684\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u7684\u8ba1\u7b97<\/strong><\/p>\n

Java \u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u6570\u636e\u7684\u6709\u5e8f\u96c6\u5408\u3002\u5b83\u4f7f\u7528\u4e00\u4e2a\u7d22\u5f15\u6765\u8868\u793a\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u4ece 0 \u5f00\u59cb\u7f16\u53f7\u3002<\/p>\n

\u6570\u7ec4\u8ba1\u7b97<\/strong><\/p>\n

Java \u6570\u7ec4\u7684\u8ba1\u7b97\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n

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

1. \u8bbf\u95ee\u5143\u7d20\uff1a<\/strong>
\u4f7f\u7528 array[index] \u8bed\u6cd5\u8bbf\u95ee\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n

int[] numbers = {1, 2, 3, 4, 5};\nint firstElement = numbers[0]; \/\/ firstElement \u73b0\u5728\u4fdd\u5b58\u503c\u4e3a 1<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4fee\u6539\u5143\u7d20\uff1a<\/strong>
\u4f7f\u7528\u4e0e\u8bbf\u95ee\u5143\u7d20\u76f8\u540c\u7684\u8bed\u6cd5\u4fee\u6539\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
numbers[0] = 10; \/\/ \u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u73b0\u5728\u53d8\u4e3a 10<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u957f\u5ea6\u8ba1\u7b97\uff1a<\/strong>
\u4f7f\u7528 length \u5b57\u6bb5\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n
int arrayLength = numbers.length; \/\/ arrayLength \u73b0\u5728\u4fdd\u5b58\u503c\u4e3a 5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u904d\u5386\u6570\u7ec4\uff1a<\/strong>
\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u6216\u589e\u5f3a\u578b for \u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
\/\/ \u4f7f\u7528 for \u5faa\u73af\nfor (int i = 0; i < numbers.length; i++) {\n    System.out.println(numbers[i]);\n}\n\n\/\/ \u4f7f\u7528\u589e\u5f3a\u578b for \u5faa\u73af\nfor (int num : numbers) {\n    System.out.println(num);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
5. \u6570\u7ec4\u521d\u59cb\u5316\uff1a<\/strong>
\u53ef\u4ee5\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u6307\u5b9a\u5143\u7d20\u7684\u5217\u8868\u6765\u521d\u59cb\u5316\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] numbers = new int[]{1, 2, 3, 4, 5};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
6. \u591a\u7ef4\u6570\u7ec4\uff1a<\/strong>
Java \u4e2d\u4e5f\u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982\u4e8c\u7ef4\u6570\u7ec4\uff0c\u5b83\u662f\u4e00\u4e2a\u5b58\u50a8\u5176\u4ed6\u6570\u7ec4\u7684\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n
int[][] matrix = new int[3][3]; \/\/ \u521b\u5efa\u4e00\u4e2a 3x3 \u4e8c\u7ef4\u6570\u7ec4\nmatrix[0][0] = 1; \/\/ \u8bbe\u7f6e\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u503c\u4e3a 1<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u901a\u8fc7\u7406\u89e3\u8fd9\u4e9b\u64cd\u4f5c\uff0c\u4f60\u53ef\u4ee5\u6709\u6548\u5730\u8ba1\u7b97\u548c\u5904\u7406 Java \u6570\u7ec4\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u7684\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\u5b58\u50a8\u540c\u7c7b\u578b\u6570\u636e\u7684\u6709\u5e8f\u96c6\u5408\uff0c\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u6570\u7ec4\u8ba1\u7b97\u6d89\u53ca\u8bbf\u95ee\u5143\u7d20\u3001\u4fee\u6539\u5143\u7d20\u3001\u8ba1\u7b97\u957f\u5ea6\u3001\u904d\u5386\u6570\u7ec4\u548c\u521d\u59cb\u5316\u6570\u7ec4\u3002\u591a\u7ef4\u6570\u7ec4\u5141\u8bb8\u5b58\u50a8\u5176\u4ed6\u6570\u7ec4\u3002 Java \u6570\u7ec4\u7684\u8ba1\u7b97 Java \u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u6570\u636e\u7684\u6709\u5e8f\u96c6\u5408\u3002\u5b83\u4f7f\u7528\u4e00\u4e2a\u7d22\u5f15\u6765\u8868\u793a\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u4ece 0 \u5f00\u59cb\u7f16\u53f7\u3002 \u6570\u7ec4\u8ba1\u7b97 Java \u6570\u7ec4\u7684\u8ba1\u7b97\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u64cd\u4f5c\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 1. \u8bbf\u95ee\u5143\u7d20\uff1a\u4f7f\u7528 array[index] \u8bed\u6cd5\u8bbf\u95ee\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a int[] numbers = {1, 2, 3, 4, 5}; int firstElement = numbers[0]; \/\/ firstElement \u73b0\u5728\u4fdd\u5b58\u503c\u4e3a 1 \u767b\u5f55\u540e\u590d\u5236 2. \u4fee\u6539\u5143\u7d20\uff1a\u4f7f\u7528\u4e0e\u8bbf\u95ee\u5143\u7d20\u76f8\u540c\u7684\u8bed\u6cd5\u4fee\u6539\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a numbers[0] = 10; \/\/ \u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u73b0\u5728\u53d8\u4e3a 10 \u767b\u5f55\u540e\u590d\u5236 3. \u957f\u5ea6\u8ba1\u7b97\uff1a\u4f7f\u7528 length \u5b57\u6bb5\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u3002\u4f8b\u5982\uff1a int arrayLength = numbers.length; \/\/ arrayLength \u73b0\u5728\u4fdd\u5b58\u503c\u4e3a 5 \u767b\u5f55\u540e\u590d\u5236 […]<\/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-65324","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65324","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=65324"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65324\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}