{"id":203389,"date":"2025-05-22T10:14:14","date_gmt":"2025-05-22T02:14:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203389\/"},"modified":"2025-05-22T10:14:14","modified_gmt":"2025-05-22T02:14:14","slug":"%e6%8e%a2%e7%b4%a2-java-scanner-%e7%b1%bb%e7%9a%84%e7%bb%86%e5%be%ae%e5%b7%ae%e5%88%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203389\/","title":{"rendered":"\u63a2\u7d22 Java Scanner \u7c7b\u7684\u7ec6\u5fae\u5dee\u522b"},"content":{"rendered":"

<\/b> <\/p>\n

\u63a2\u7d22 Java Scanner \u7c7b\u7684\u7ec6\u5fae\u5dee\u522b<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300a\u63a2\u7d22 Java Scanner \u7c7b\u7684\u7ec6\u5fae\u5dee\u522b\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

<\/p>\n

java \u4e2d\u7684 scanner \u7c7b\u662f\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u5f3a\u5927\u5de5\u5177\u3002\u7136\u800c\uff0c\u5b83\u6709\u4e00\u4e9b\u9c9c\u4e3a\u4eba\u77e5\u7684\u602a\u7656\uff0c\u53ef\u80fd\u4f1a\u7ed9\u5f00\u53d1\u4eba\u5458\u5e26\u6765\u9ebb\u70e6\uff0c\u7279\u522b\u662f\u5728\u4f7f\u7528\u4e0d\u540c\u7684\u8f93\u5165\u7c7b\u578b\u65f6\u3002\u4e0b\u9762\u6df1\u5165\u63a2\u8ba8\u4e00\u4e9b\u5173\u952e\u7684\u7ec6\u5fae\u5dee\u522b\u548c\u5e38\u89c1\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

\n

1.\u4f7f\u7528 nextline() \u83b7\u53d6\u591a\u884c\u8f93\u5165<\/strong> <\/h3>\n

scanner \u7c7b\u7684 nextline() \u65b9\u6cd5\u5bf9\u4e8e\u8bfb\u53d6\u591a\u884c\u8f93\u5165\u81f3\u5173\u91cd\u8981\u3002\u4e0e\u4ec5\u8bfb\u53d6\u76f4\u5230\u7a7a\u683c\u7684 next() \u4e0d\u540c\uff0cnextline() \u8bfb\u53d6\u76f4\u5230\u6362\u884c\u7b26\uff0c\u8fd9\u4f7f\u5176\u975e\u5e38\u9002\u5408\u5305\u542b\u7a7a\u683c\u7684\u8f93\u5165\u3002<\/p>\n

system.out.println(\"enter customer's full name, email, age, and credit limit\");\nscanner sc = new scanner(system.in);\n\n\/\/ using nextline() for full name (handles spaces) and next() for single-word inputs\nscannerinput customer = new scannerinput(sc.nextline(), sc.next(), sc.nextint(), sc.nextdouble());\n<\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0cnextline() \u7528\u4e8e\u6355\u83b7\u5e26\u7a7a\u683c\u7684\u5168\u540d\u3002\u8fd9\u8ba9\u6211\u4eec\u53ef\u4ee5\u5904\u7406\u50cf\u201carshi saxena\u201d\u8fd9\u6837\u7684\u8f93\u5165\uff0c\u800c\u65e0\u9700\u5c06\u5b83\u4eec\u5206\u6210\u5355\u72ec\u7684\u6807\u8bb0\u3002<\/p>\n
\n
 2.\u6362\u884c\u7f13\u51b2\u533a\u95ee\u9898<\/strong> <\/h3>\n
\u5f53\u60a8\u5728 nextline() \u4e4b\u524d\u4f7f\u7528 nextint()\u3001next() \u6216 nextdouble() \u65f6\uff0c\u7f13\u51b2\u533a\u4e2d\u5269\u4f59\u7684\u4efb\u4f55\u6362\u884c\u7b26 (n) \u90fd\u4f1a\u5e72\u6270\u60a8\u7684\u8f93\u5165\u6d41\u3002\u4f8b\u5982\uff1a<\/p>\n
system.out.println(\"enter a number:\");\nint number = sc.nextint();\nsc.nextline(); \/\/ clear the newline from the buffer\n\nsystem.out.println(\"enter a sentence:\");\nstring sentence = sc.nextline();\n<\/pre>\n
\u8fd9\u91cc\u5728sc.nextint()\u540e\u9762\u6dfb\u52a0\u4e86sc.nextline()\uff0c\u7528\u4e8e\u6e05\u9664\u6362\u884c\u7b26\uff0c\u9632\u6b62\u5176\u7acb\u5373\u88ab\u540e\u9762\u7684nextline()\u8bfb\u53d6\u4e3a\u8f93\u5165\u3002<\/p>\n
\n
 3.\u5728\u6df7\u5408\u8f93\u5165\u573a\u666f\u4e2d\u4f7f\u7528\u626b\u63cf\u4eea\u7684\u6700\u4f73\u5b9e\u8df5<\/strong> <\/h3>\n
\u7ec4\u5408\u4e0d\u540c\u7c7b\u578b\u7684\u8f93\u5165\u65f6\uff0c\u8bf7\u8bb0\u4f4f\u4ed4\u7ec6\u7ba1\u7406\u7f13\u51b2\u533a\uff1a<\/p>\n
    \n
  • \n
    \u5728 nextint() \u6216 nextdouble() \u7b49\u4efb\u4f55\u65b9\u6cd5\u4e4b\u540e\u7acb\u5373\u4f7f\u7528 nextline() \u6765\u6d88\u8017\u5269\u4f59\u7684\u6362\u884c\u7b26\u3002<\/p>\n<\/li>\n
  • \n
    \u8003\u8651\u4e3a\u4e0d\u540c\u7684\u8f93\u5165\u7c7b\u578b\u521b\u5efa\u5355\u72ec\u7684\u65b9\u6cd5\u4ee5\u907f\u514d\u6df7\u6dc6\u3002<\/p>\n<\/li>\n
  • \n
    \u4f7f\u7528\u540e\u59cb\u7ec8\u5173\u95ed scanner \u5b9e\u4f8b\u4ee5\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n<\/li>\n<\/ul>\n
    \n
     \u793a\u4f8b\uff1a\u89e3\u51b3\u6362\u884c\u7f13\u51b2\u533a\u95ee\u9898<\/strong> <\/h3>\n
    \u8fd9\u662f\u4e00\u4e2a\u6f14\u793a nextline() \u7528\u6cd5\u548c\u6e05\u9664\u7f13\u51b2\u533a\u7684\u5b9e\u9645\u793a\u4f8b\uff1a<\/p>\n
    Scanner sc = new Scanner(System.in);\n\nSystem.out.println(\"Enter Customer's Full Name, Email, Age, and Credit Limit\");\nScannerInput c1 = new ScannerInput(sc.nextLine(), sc.next(), sc.nextInt(), sc.nextDouble());\n\nSystem.out.println(\"Enter Alias:\");\nsc.nextLine(); \/\/ Clear buffer\nString alias = sc.nextLine();\n\nSystem.out.println(\"Alias is \" + alias);\n<\/pre>\n
    \n
     \u7ed3\u8bba <\/h2>\n
    \u8fd9\u4e9b\u6280\u5de7\u5c06\u6709\u52a9\u4e8e\u786e\u4fdd\u66f4\u987a\u7545\u7684\u8f93\u5165\u5904\u7406\u5e76\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u610f\u5916\u884c\u4e3a\u3002<\/p>\n
    \n
     \u76f8\u5173\u5e16\u5b50 <\/h2>\n
      \n
    • \u6570\u7ec4\u9762\u8bd5\u8981\u70b9<\/li>\n
    • java \u5185\u5b58\u8981\u70b9<\/li>\n
    • java \u5173\u952e\u5b57\u8981\u70b9<\/li>\n
    • java oop \u57fa\u7840\u77e5\u8bc6<\/li>\n
    • \u96c6\u5408\u6846\u67b6\u8981\u70b9<\/li>\n<\/ul>\n
      \u7f16\u7801\u5feb\u4e50\uff01<\/p>\n
      \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u63a2\u7d22 Java Scanner \u7c7b\u7684\u7ec6\u5fae\u5dee\u522b\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
            \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u63a2\u7d22 Java Scanner ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203389","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203389"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203389\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}