{"id":66458,"date":"2025-05-03T17:27:35","date_gmt":"2025-05-03T09:27:35","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66458\/"},"modified":"2025-05-03T17:27:35","modified_gmt":"2025-05-03T09:27:35","slug":"%e7%94%a8java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%ad%98%e5%82%a8%e4%ba%ba%e7%9a%84%e5%90%8d%e5%ad%97-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66458\/","title":{"rendered":"\u7528java\u6570\u7ec4\u600e\u4e48\u5b58\u50a8\u4eba\u7684\u540d\u5b57"},"content":{"rendered":"

\n \u53ef\u4ee5\u4f7f\u7528 java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a\u521b\u5efa\u4e00\u4e2a string \u6570\u7ec4\u5e76\u6307\u5b9a\u5143\u7d20\u6570\u91cf\u3002\u6309\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u3002\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u901a\u8fc7\u7d22\u5f15\u66f4\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\uff0c\u4ee5\u6dfb\u52a0\u65b0\u5143\u7d20\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\uff0c\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\uff0c\u4ee5\u5220\u9664\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"\u7528java\u6570\u7ec4\u600e\u4e48\u5b58\u50a8\u4eba\u7684\u540d\u5b57\u63d2\u56fe\"<\/p>\n

\u7528 Java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57<\/strong><\/p>\n

Java \u6570\u7ec4\u662f\u4e00\u79cd\u6309\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\uff0c\u975e\u5e38\u9002\u5408\u5b58\u50a8\u4e00\u4e2a\u6709\u5e8f\u5143\u7d20\u5217\u8868\uff0c\u4f8b\u5982\u4eba\u7684\u540d\u5b57\u3002\u4e0b\u9762\u662f\u4f7f\u7528 Java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57\u7684\u6b65\u9aa4\uff1a<\/p>\n

1. \u521b\u5efa\u4e00\u4e2a String \u6570\u7ec4<\/strong><\/p>\n

String[] names = new String[5];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8be5\u6570\u7ec4\u5c06\u6709 5 \u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15 0 \u5230 4 \u6765\u8bbf\u95ee\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
2. \u6309\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c<\/strong><\/p>\n
names[0] = \"John\";\nnames[1] = \"Mary\";\nnames[2] = \"Bob\";\nnames[3] = \"Alice\";\nnames[4] = \"Peter\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u73b0\u5728\uff0c\u6570\u7ec4\u5143\u7d20\u5b58\u50a8\u4e86\u4ee5\u4e0b\u540d\u5b57\uff1a”John”\u3001”Mary”\u3001”Bob”\u3001”Alice” \u548c “Peter”\u3002<\/p>\n
3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
System.out.println(names[2]); \/\/ \u8f93\u51fa \"Bob\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u904d\u5386\u6570\u7ec4<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u6216\u589e\u5f3a for \u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff1a<\/p>\n
for (int i = 0; i < names.length; i++) {\n  System.out.println(names[i]);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8be5\u5faa\u73af\u5c06\u8f93\u51fa\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u540d\u5b57\u3002<\/p>\n
5. \u66f4\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u66f4\u6539\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
names[2] = \"Bob Smith\"; \/\/ \u5c06\u7d22\u5f15 2 \u5904\u7684\u5143\u7d20\u66f4\u6539\u4e3a \"Bob Smith\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
6. \u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n
\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u52a0\u4e0a\u8981\u6dfb\u52a0\u7684\u5143\u7d20\u7684\u6570\u91cf\u3002\u7136\u540e\u5c06\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u5e76\u6dfb\u52a0\u65b0\u5143\u7d20\u3002<\/p>\n
String[] newNames = new String[names.length + 1];\nSystem.arraycopy(names, 0, newNames, 0, names.length);\nnewNames[names.length] = \"Lisa\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u73b0\u5728\uff0cnewNames \u6570\u7ec4\u5305\u542b\u4e86 names \u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\uff0c\u4ee5\u53ca\u4e00\u4e2a\u65b0\u5143\u7d20 “Lisa”\u3002<\/p>\n
7. \u5220\u9664\u5143\u7d20<\/strong><\/p>\n
\u8981\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\uff0c\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u51cf\u53bb\u8981\u5220\u9664\u7684\u5143\u7d20\u7684\u6570\u91cf\u3002\u7136\u540e\u5c06\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\u3002<\/p>\n
String[] newNames = new String[names.length - 1];\nSystem.arraycopy(names, 0, newNames, 0, 2);\nSystem.arraycopy(names, 3, newNames, 2, newNames.length - 2);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u73b0\u5728\uff0cnewNames \u6570\u7ec4\u5305\u542b\u4e86 names \u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u9664\u4e86\u7d22\u5f15 2 \u5904\u7684\u5143\u7d20 “Bob”\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u7528java\u6570\u7ec4\u600e\u4e48\u5b58\u50a8\u4eba\u7684\u540d\u5b57\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u53ef\u4ee5\u4f7f\u7528 java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a\u521b\u5efa\u4e00\u4e2a string \u6570\u7ec4\u5e76\u6307\u5b9a\u5143\u7d20\u6570\u91cf\u3002\u6309\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u3002\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u901a\u8fc7\u7d22\u5f15\u66f4\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\uff0c\u4ee5\u6dfb\u52a0\u65b0\u5143\u7d20\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\uff0c\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\uff0c\u4ee5\u5220\u9664\u5143\u7d20\u3002 \u7528 Java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57 Java \u6570\u7ec4\u662f\u4e00\u79cd\u6309\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\uff0c\u975e\u5e38\u9002\u5408\u5b58\u50a8\u4e00\u4e2a\u6709\u5e8f\u5143\u7d20\u5217\u8868\uff0c\u4f8b\u5982\u4eba\u7684\u540d\u5b57\u3002\u4e0b\u9762\u662f\u4f7f\u7528 Java \u6570\u7ec4\u5b58\u50a8\u4eba\u7684\u540d\u5b57\u7684\u6b65\u9aa4\uff1a 1. \u521b\u5efa\u4e00\u4e2a String \u6570\u7ec4 String[] names = new String[5]; \u767b\u5f55\u540e\u590d\u5236 \u8be5\u6570\u7ec4\u5c06\u6709 5 \u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15 0 \u5230 4 \u6765\u8bbf\u95ee\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u6309\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c names[0] = “John”; names[1] = “Mary”; names[2] = “Bob”; names[3] = “Alice”; names[4] = “Peter”; \u767b\u5f55\u540e\u590d\u5236 \u73b0\u5728\uff0c\u6570\u7ec4\u5143\u7d20\u5b58\u50a8\u4e86\u4ee5\u4e0b\u540d\u5b57\uff1a”John”\u3001”Mary”\u3001”Bob”\u3001”Alice” \u548c “Peter”\u3002 3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a System.out.println(names[2]); […]<\/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-66458","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66458","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=66458"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66458\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}