{"rsdb":{"rid":"395357","subhead":"","postdate":"0","aid":"272619","fid":"90","uid":"1","topic":"1","content":"<div id=\"cnblogs_post_body\" class=\"blogpost-body cnblogs-markdown\"> \n <h1 id=\"\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\">\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b<\/h1> \n <h2 id=\"\u5305\">\u5305<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">package com.pac1.pac2.pac3\npackage com\npackage pac1 {\n    package pac2 {\n        package pac3 {\n            object ScalaPackage {\n                def test(): Unit = {\n                    println(&quot;test...&quot;)\n                }\n            }\n        }\n    }\n}\n<\/code><\/pre> \n <p><strong>\u6ce8\u610f<\/strong><\/p> \n <ul> \n  <li> <p>\u5305\u548c\u7c7b\u7684\u7269\u7406\u8def\u5f84\u6ca1\u6709\u5173\u7cfb<\/p> <\/li> \n  <li> <p>\u540c\u4e00\u4e2a\u6e90\u7801\u6587\u4ef6\u4e2d\u5b50\u5305\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u7236\u5305\u4e2d\u7684\u5185\u5bb9\uff0c\u800c\u65e0\u9700import<\/p> <\/li> \n  <li> <p>package\u4e5f\u53ef\u4ee5\u770b\u4f5c\u5bf9\u8c61\uff0c\u5e76\u58f0\u660e\u5c5e\u6027\u548c\u51fd\u6570<\/p> <pre><code class=\"language-scala\">package big {\n  class Test{\n    def test() :Unit = {\n      printf(&quot;test...&quot;)\n    }\n  }\npackage object ob_pack{\n  val name : String = &quot;ob_pack&quot;\n\n  def getname(): String = {\n    name\n  }\n}\n  package ob {\n    object ob01 {\n      def main(args: Array[String]): Unit = {\n        new Test().test()\n        printf(ob_pack.getname())\n      }\n    }\n  }\n}\n<\/code><\/pre> <\/li> \n <\/ul> \n <h2 id=\"\u5bfc\u5165\">\u5bfc\u5165<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">import <a href=https:\/\/www.cppentry.com style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>java<\/a>.util.List\nimport <a href=https:\/\/www.cppentry.com style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>java<\/a>.util._ \/\/ Scala\u4e2d\u4f7f\u7528\u4e0b\u5212\u7ebf\u4ee3\u66ffJava\u4e2d\u7684\u661f\u53f7\n<\/code><\/pre> \n <p><strong>\u6ce8\u610f<\/strong><\/p> \n <ul> \n  <li> <p>import\u8bed\u6cd5\u53ef\u4ee5\u5728\u4efb\u610f\u4f4d\u7f6e\u4f7f\u7528<\/p> <\/li> \n  <li> <p>\u53ef\u4ee5\u5bfc\u5305\uff0c\u800c\u4e0d\u662f\u5bfc\u7c7b<\/p> <pre><code class=\"language-scala\">object ScalaImport{\n    def main(args: Array[String]): Unit = {\n        import java.util\n        new util.ArrayList()\n    }\n}\n<\/code><\/pre> <\/li> \n  <li> <p>\u53ef\u4ee5\u5728\u540c\u4e00\u884c\u4e2d\u5bfc\u5165\u76f8\u540c\u5305\u4e2d\u7684\u591a\u4e2a\u7c7b\uff0c\u7b80\u5316\u4ee3\u7801<\/p> <pre><code class=\"language-scala\">import java.util.{List, ArrayList}\n<\/code><\/pre> <\/li> \n  <li> <p>\u53ef\u4ee5\u5c4f\u853d\u67d0\u4e2a\u5305\u4e2d\u7684\u7c7b<\/p> <pre><code class=\"language-scala\">import java.sql.{ Date=&gt;_, Array=&gt;_, _ }\n<\/code><\/pre> <\/li> \n  <li> <p>\u53ef\u4ee5\u7ed9\u7c7b\u8d77\u522b\u540d\uff0c\u7b80\u5316\u4f7f\u7528<\/p> <pre><code class=\"language-scala\">import java.util.{ArrayList=&gt;AList}\n<\/code><\/pre> <\/li> \n  <li> <p>\u53ef\u4ee5\u4f7f\u7528\u7c7b\u7684\u7edd\u5bf9\u8def\u5f84\u800c\u4e0d\u662f\u76f8\u5bf9\u8def\u5f84<\/p> <pre><code class=\"language-scala\">import _root_.java.util.ArrayList\n<\/code><\/pre> <\/li> \n  <li> <p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cScala\u4e2d\u4f1a\u5bfc\u5165\u5982\u4e0b\u5305\u548c\u5bf9\u8c61<\/p> <pre><code class=\"language-scala\">import java.lang._\nimport scala._\nimport scala.Predef._\n<\/code><\/pre> <\/li> \n <\/ul> \n <h2 id=\"\u7c7b\">\u7c7b<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">\/\/ \u58f0\u660e\u7c7b\uff1a\u8bbf\u95ee\u6743\u9650 class \u7c7b\u540d { \u7c7b\u4e3b\u4f53\u5185\u5bb9 } \nclass User {\n    \/\/ \u7c7b\u7684\u4e3b\u4f53\u5185\u5bb9\n}\n\/\/ \u5bf9\u8c61\uff1anew \u7c7b\u540d(\u53c2\u6570\u5217\u8868)\nnew User()\n<\/code><\/pre> \n <p><strong>\u6ce8\u610f<\/strong><\/p> \n <ul> \n  <li>\u4e00\u4e2a\u6e90\u6587\u4ef6\u4e2d\u53ef\u4ee5\u58f0\u660e\u591a\u4e2a\u516c\u5171\u7c7b<\/li> \n <\/ul> \n <h2 id=\"\u5c5e\u6027\">\u5c5e\u6027<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">class User {\n    var name : String = _ \/\/ \u7c7b\u5c5e\u6027\u5176\u5b9e\u5c31\u662f\u7c7b\u53d8\u91cf\n    var age : Int = _ \/\/ \u4e0b\u5212\u7ebf\u8868\u793a\u7c7b\u7684\u5c5e\u6027\u9ed8\u8ba4\u521d\u59cb\u5316\n}\n<\/code><\/pre> \n <p><strong>\u6ce8\u610f<\/strong><\/p> \n <ul> \n  <li> <p>\u5c5e\u6027\u5176\u5b9e\u5728\u7f16\u8bd1\u540e\u4e5f\u4f1a\u751f\u6210\u65b9\u6cd5<\/p> <pre><code class=\"language-java\">   public static class User {\n      private String name;\n      private int age;\n      public String name() {\n         return this.name;\n      }\n      public void name_$eq(final String x$1) {\n         this.name = x$1;\n      }\n      public int age() {\n         return this.age;\n      }\n      public void age_$eq(final int x$1) {\n         this.age = x$1;\n      }\n   }\n<\/code><\/pre> <\/li> \n <\/ul> \n <h2 id=\"\u8bbf\u95ee\u6743\u9650\">\u8bbf\u95ee\u6743\u9650<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">private : \u79c1\u6709\u8bbf\u95ee\u6743\u9650 =&gt; \u540c\u7c7b\nprivate[\u5305\u540d]: \u5305\u8bbf\u95ee\u6743\u9650 =&gt; \u540c\u5305\uff0c\u5305\u79c1\u6709\nprotected : \u53d7\u4fdd\u62a4\u6743\u9650\uff0c\u4e0d\u80fd\u540c\u5305 =&gt; \u53d7\u4fdd\u62a4\u7684\uff0c \u540c\u7c7b\uff0c\u5b50\u7c7b\uff0c\u6ca1\u6709\u540c\u5305\n            : \u516c\u5171\u8bbf\u95ee\u6743\u9650\n<\/code><\/pre> \n <h2 id=\"\u65b9\u6cd5\">\u65b9\u6cd5<\/h2> \n <p>\u7c7b\u7684\u65b9\u6cd5\u5176\u5b9e\u5c31\u662f\u51fd\u6570\uff0c\u6240\u4ee5\u58f0\u660e\u65b9\u5f0f\u5b8c\u5168\u4e00\u6837\uff0c\u4f46\u662f\u5fc5\u987b\u901a\u8fc7\u4f7f\u7528\u5bf9\u8c61\u8fdb\u884c\u8c03\u7528<\/p> \n <pre><code class=\"language-scala\">object ScalaMethod{\n    def main(args: Array[String]): Unit = {\n        val user = new User \/\/ new \u5bf9\u8c61 \u624d\u53ef\u4ee5\u4f7f\u7528\u65b9\u6cd5\n        user.login(&quot;zhangsan&quot;, &quot;000000&quot;)\n    }\n}\nclass User {\n    def login( name:String, password:String ): Boolean = {\n        false\n    }\n}\n<\/code><\/pre> \n <h2 id=\"\u5bf9\u8c61\">\u5bf9\u8c61<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <pre><code class=\"language-scala\">val \/ var \u5bf9\u8c61\u540d [\uff1a\u7c7b\u578b]  = new \u7c7b\u578b()\nvar user : User = new User()\n<\/code><\/pre> \n <p>\u8865\u5145<\/p> \n <p>\u751f\u6210\u5bf9\u8c61\u7684\u64cd\u4f5c<\/p> \n <ul> \n  <li>\u53cd\u5c04<\/li> \n  <li>new<\/li> \n  <li>\u53cd\u5e8f\u5217\u5316<\/li> \n  <li>clone<\/li> \n <\/ul> \n <h2 id=\"\u6784\u9020\u65b9\u6cd5class\">\u6784\u9020\u65b9\u6cd5(class)<\/h2> \n <p><strong>\u8bed\u6cd5<\/strong><\/p> \n <p>\u6784\u9020\u5bf9\u8c61\u4e5f\u9700\u8981\u8c03\u7528\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u6765\u521b\u5efa\u3002\u5e76\u4e14\u4e00\u4e2a\u7c7b\u4e2d\u53ef\u4ee5\u6709\u4efb\u610f\u591a\u4e2a\u4e0d\u76f8\u540c\u7684\u6784\u9020\u65b9\u6cd5\u3002\u8fd9\u4e9b\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u5206\u4e3a2\u5927\u7c7b\uff1a\u4e3b\u6784\u9020\u51fd\u6570\u4e0e\u8f85\u52a9\u6784\u9020\u51fd\u6570<\/p> \n <pre><code class=\"language-scala\">class User() { \/\/ \u4e3b\u6784\u9020\u51fd\u6570  ----\u7528\u4e8e\u5b8c\u6210\u7c7b\u7684\u521d\u59cb\u5316\u64cd\u4f5c\u7684\u6784\u9020\u65b9\u6cd5\u79f0\u4e4b\u4e3a\u4e3b\u6784\u9020\u65b9\u6cd5\n    var username : String = _   \/\/ TODO \u5728\u6784\u9020\u53c2\u6570\u524d\u4f7f\u7528var\u6216val\u58f0\u660e\n    def this( name:String ) { \/\/ \u8f85\u52a9\u6784\u9020\u51fd\u6570\uff0c\u4f7f\u7528this\u5173\u952e\u5b57\u58f0\u660e  ----\u5176\u4ed6\u7684\u6784\u9020\u65b9\u6cd5\u5c31\u79f0\u4e4b\u4e3a\u8f85\u52a9\u6784\u9020\u65b9\u6cd5\n        this() \/\/  \u8f85\u52a9\u6784\u9020\u65b9\u6cd5\u5728\u6267\u884c\u4e4b\u524d\uff0c\u5e94\u8be5\u9996\u5148\u8c03\u7528\u4e3b\u6784\u9020\u65b9\u6cd5\u5b8c\u6210\u7c7b\u7684\u521d\u59cb\u5316\n        username = name\n\t}\n    def this( name:String, password:String ) {\n        this(name) \/\/ \u6784\u9020\u5668\u8c03\u7528\u5176\u4ed6\u53e6\u5916\u7684\u6784\u9020\u5668\uff0c\u8981\u6c42\u88ab\u8c03\u7528\u6784\u9020\u5668\u5fc5\u987b\u63d0\u524d\u58f0\u660e\n    }\n}\n<\/code><\/pre> \n <pre><code class=\"language-scala\">\/\/ \u8f85\u52a9\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u91cd\u8f7d\u7684,\u5e76\u4e14\u53ef\u4ee5\u4e92\u76f8\u8c03\u7528,\u4f46\u662f\u8c03\u7528\u7684\u8f85\u52a9\u6784\u9020\u65b9\u6cd5\u5e94\u8be5\u63d0\u524d\u58f0\u660e    \ndef main(args: Array[String]): Unit = {\n        new User(&quot;zhangsan&quot;);  \/\/ \u5148\u6267\u884c\u7236\u7c7b\u6784\u9020\u65b9\u6cd5\n    \/\/ * \u5b50\u7c7b\u6240\u6709\u7684 \u6784\u9020\u51fd\u6570 \u9ed8\u8ba4\u8c03\u7528\u7236\u7c7b\u7684\u65e0\u53c2\u6784\u9020\u51fd\u6570\uff08\u5176\u5b9e\u662f\u9ed8\u8ba4\u7701\u7565\u6389\u4e86\u4e00\u884c\u4ee3\u7801\uff1asuper();\uff09;\u7701\u7565\u6389\u7684\u8fd9\u884csuper()\u4ee3\u7801\u53ef\u4ee5\u81ea\u884c\u6dfb\u52a0\u5230\u6784\u9020\u51fd\u6570\u7684\u7b2c\u4e00\u884c\uff08\u5fc5\u987b\u662f\u7b2c\u4e00\u884c\uff0c\u5426\u5219\u62a5\u9519\uff09\n        \/\/ aaaaa\n        \/\/ ccccc\n        new User()\n        \/\/aaaaa\n        \/\/ccccc\n        \/\/ddddd   \n    }\n    class Person(s:String) {\n        println(&quot;aaaaa&quot;)\n        def this() {\n            this(&quot;lisi&quot;)\n            println(&quot;bbbbb&quot;)\n        }\n    }\n    class User(var name:String) extends Person(name){\n        println(&quot;ccccc&quot;)\n        def this() {\n            this(&quot;wangwu&quot;)\n            println(&quot;ddddd&quot;)\n        }\n    }\n<\/code><\/pre> \n <h2 id=\"\u4f34\u751f\u7c7b\u4e0e\u4f34\u751f\u5bf9\u8c61object\">\u4f34\u751f\u7c7b\u4e0e\u4f34\u751f\u5bf9\u8c61(object)<\/h2> \n <p>\u6784\u9020\u65b9\u6cd5\u79c1\u6709\u5316: \u5728\u53c2\u6570\u5217\u8868\u524d\u589e\u52a0private\u5173\u952e\u5b57<br \/> \u58f0\u660e\u4e00\u4e2a\u516c\u5171\u7684\uff0c\u9759\u6001\u7684\uff0c\u8fd4\u56de\u672c\u7c7b\u578b\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u83b7\u53d6\u5bf9\u8c61<br \/> scala\u4e2d\u6ca1\u6709\u9759\u6001\u8bed\u6cd5,\u4f46\u662f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528java\u4e2d\u7684\u9759\u6001\u64cd\u4f5c<br \/> scala\u91c7\u7528\u4e86\u4e00\u79cd\u7279\u6b8a\u7684\u5904\u7406\u65b9\u5f0f\u6765\u4ee3\u66ff\u9759\u6001\u8bed\u6cd5 \uff1aobject<br \/> object\u5173\u952e\u5b57\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\uff0c\u5bf9\u8c61\u7684\u540d\u5b57\u5c31\u662f\u58f0\u660e\u7684\u540d\u5b57<\/p> \n <p>\u4f7f\u7528object\u5173\u952e\u5b57\u58f0\u660e\u7684\u7c7b\u548c\u5bf9\u8c61\u6709\u5173\u7cfb\u7684\u3002\u8fd9\u4e2a\u5bf9\u8c61\u7b49\u540c\u4e8e\u4f34\u968f\u7740\u8fd9\u4e2a\u7c7b\u521b\u5efa\u65f6\u6240\u4ea7\u751f\u7684\uff0c\u6240\u4ee5\u5c06\u8fd9\u4e2a\u5bf9\u8c61\u79f0\u4e4b\u4e3a\uff1a\u4f34\u751f\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u7c7b\u79f0\u4e4b\u4e3a\u4f34\u751f\u7c7b","orderid":"0","title":"Scala-\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b(\u4e00)","smalltitle":"","mid":"0","fname":"Scala","special_id":"0","bak_id":"0","info":"0","hits":"369","pages":"3","comments":"0","posttime":"2023-08-06 07:49:46","list":"1691279386","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"<A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=Scala-' target=_blank>Scala-<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%CF%F2%B6%D4%CF%F3' target=_blank>\u5411\u5bf9\u8c61<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"211.148.71.108","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Scala-\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b","lastview":"1715047590","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}