{"id":36985,"date":"2024-11-26T11:05:52","date_gmt":"2024-11-26T03:05:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36985\/"},"modified":"2024-11-26T11:05:52","modified_gmt":"2024-11-26T03:05:52","slug":"java%e6%80%8e%e4%b9%88%e7%90%86%e8%a7%a3%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36985\/","title":{"rendered":"java\u600e\u4e48\u7406\u89e3\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u7b54\u6848\uff1ajava \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u3001\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u8be6\u7ec6\u63cf\u8ff0\uff1a\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u6307\u5b9a\uff0c\u65e0\u6cd5\u66f4\u6539\u3002\u6570\u7ec4\u53ea\u80fd\u5b58\u50a8\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u4ece 0 \u5f00\u59cb\u7684\u552f\u4e00\u7d22\u5f15\u3002\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u65b0\u6570\u7ec4\u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\uff0c\u6307\u5b9a\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f7f\u7528\u7d22\u5f15\u8fd0\u7b97\u7b26\u8bbf\u95ee\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u591a\u7ef4\u6570\u7ec4\u662f\u6570\u7ec4\u7684\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u4e5f\u662f\u4e00\u4e2a\u6570\u7ec4\u3002\u4f7f\u7528\u5d4c\u5957\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u591a\u7ef4\u6570\u7ec4\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111222482327728.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u7406\u89e3\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u7406\u89e3\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u7406\u89e3 Java \u4e2d\u7684\u6570\u7ec4<\/strong><\/p>\n<p>\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u4f7f\u7528\u56fa\u5b9a\u957f\u5ea6\u7684\u5143\u7d20\u5217\u8868\u6765\u5b9e\u73b0\u3002<\/p>\n<p><strong>\u7406\u89e3\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li> <strong>\u6570\u7ec4\u5927\u5c0f\uff1a<\/strong>\u6570\u7ec4\u5728\u521b\u5efa\u65f6\u6307\u5b9a\u5927\u5c0f\uff0c\u5e76\u4e14\u5728\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u65e0\u6cd5\u66f4\u6539\u3002<\/li>\n<li> <strong>\u5143\u7d20\u7c7b\u578b\uff1a<\/strong>\u6570\u7ec4\u53ea\u80fd\u5b58\u50a8\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u4f8b\u5982 int\u3001double\u3001String \u7b49\u3002<\/li>\n<li> <strong>\u7d22\u5f15\uff1a<\/strong>\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u79f0\u4e3a\u7d22\u5f15\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u6570\u7ec4\u7684\u957f\u5ea6\u51cf 1\u3002<\/li>\n<li> <strong>\u8bbf\u95ee\u5143\u7d20\uff1a<\/strong>\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u8981\u521b\u5efa\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>int[] numbers = new int[5];\nString[] names = new String[10];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8bbf\u95ee\u5143\u7d20<\/strong><\/p>\n<p>\u8981\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8fd0\u7b97\u7b26\uff1a<\/p>\n<pre>numbers[0] = 10; \/\/ \u8d4b\u503c\u4e3a 10\nString name = names[5]; \/\/ \u8bfb\u53d6\u7d22\u5f15 5 \u5904\u7684\u540d\u79f0<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u904d\u5386\u6570\u7ec4<\/strong><\/p>\n<p>\u8981\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\uff1a<\/p>\n<pre>\/\/ \u904d\u5386 numbers \u6570\u7ec4\u5e76\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\nfor (int number : numbers) {\n    System.out.println(number);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u591a\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>Java \u4e5f\u652f\u6301\u591a\u7ef4\u6570\u7ec4\u3002\u591a\u7ef4\u6570\u7ec4\u662f\u6570\u7ec4\u7684\u6570\u7ec4\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u4e5f\u662f\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n<pre>int[][] matrix = new int[3][3]; \/\/ 3 \u884c 3 \u5217\u7684\u77e9\u9635<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u591a\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u591a\u7ef4\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u5d4c\u5957\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\uff1a<\/p>\n<pre>\/\/ \u8d4b\u503c\u77e9\u9635\u4e2d\u7684\u5143\u7d20\nmatrix[1][2] = 5;\n\n\/\/ \u8bfb\u53d6\u77e9\u9635\u4e2d\u7684\u5143\u7d20\nint value = matrix[0][0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u7406\u89e3\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":"<p>\u7b54\u6848\uff1ajava \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u3001\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u8be6\u7ec6\u63cf\u8ff0\uff1a\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u6307\u5b9a\uff0c\u65e0\u6cd5\u66f4\u6539\u3002\u6570\u7ec4\u53ea\u80fd\u5b58\u50a8\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u4ece 0 \u5f00\u59cb\u7684\u552f\u4e00\u7d22\u5f15\u3002\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u65b0\u6570\u7ec4\u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\uff0c\u6307\u5b9a\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f7f\u7528\u7d22\u5f15\u8fd0\u7b97\u7b26\u8bbf\u95ee\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u591a\u7ef4\u6570\u7ec4\u662f\u6570\u7ec4\u7684\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u4e5f\u662f\u4e00\u4e2a\u6570\u7ec4\u3002\u4f7f\u7528\u5d4c\u5957\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u591a\u7ef4\u6570\u7ec4\u5143\u7d20\u3002 \u7406\u89e3 Java \u4e2d\u7684\u6570\u7ec4 \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u4f7f\u7528\u56fa\u5b9a\u957f\u5ea6\u7684\u5143\u7d20\u5217\u8868\u6765\u5b9e\u73b0\u3002 \u7406\u89e3\u6570\u7ec4 \u6570\u7ec4\u5927\u5c0f\uff1a\u6570\u7ec4\u5728\u521b\u5efa\u65f6\u6307\u5b9a\u5927\u5c0f\uff0c\u5e76\u4e14\u5728\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u65e0\u6cd5\u66f4\u6539\u3002 \u5143\u7d20\u7c7b\u578b\uff1a\u6570\u7ec4\u53ea\u80fd\u5b58\u50a8\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u4f8b\u5982 int\u3001double\u3001String \u7b49\u3002 \u7d22\u5f15\uff1a\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u79f0\u4e3a\u7d22\u5f15\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4e00\u76f4\u5230\u6570\u7ec4\u7684\u957f\u5ea6\u51cf 1\u3002 \u8bbf\u95ee\u5143\u7d20\uff1a\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002 \u521b\u5efa\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8981\u521b\u5efa\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a int[] numbers = new int[5]; String[] names = new String[10]; \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u5143\u7d20 \u8981\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8fd0\u7b97\u7b26\uff1a numbers[0] = 10; \/\/ \u8d4b\u503c\u4e3a 10 String name = names[5]; \/\/ \u8bfb\u53d6\u7d22\u5f15 5 \u5904\u7684\u540d\u79f0 \u767b\u5f55\u540e\u590d\u5236 [&hellip;]<\/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-36985","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36985","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=36985"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36985\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}