{"id":167356,"date":"2020-10-14T10:57:56","date_gmt":"2020-10-14T02:57:56","guid":{"rendered":"http:\/\/4563.org\/?p=167356"},"modified":"2020-10-14T10:57:56","modified_gmt":"2020-10-14T02:57:56","slug":"%e5%b0%8f%e7%99%bd%e9%97%ae%e9%a2%98-java-%e5%85%b3%e4%ba%8e-this-%e7%9a%84%e6%8c%87%e5%90%91%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=167356","title":{"rendered":"(\u5c0f\u767d\u95ee\u9898) Java \u5173\u4e8e this \u7684\u6307\u5411\u95ee\u9898"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  (\u5c0f\u767d\u95ee\u9898) Java \u5173\u4e8e this \u7684\u6307\u5411\u95ee\u9898               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : rabbbit <\/span>  <span><i><\/i> 1<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u8fd9\u4e2a this \u5230\u5e95\u6307\u5411\u8c01, \u4e3a\u4ec0\u4e48 s.getName() \u8f93\u51fa foo, \u800c s.name \u8f93\u51fa bar.<br \/> \u6211\u4ee5\u4e3a\u4e24\u4e2a\u90fd\u7ed3\u679c\u90fd\u5e94\u8be5\u662f bar,\u662f\u54ea\u91cc\u641e\u9519\u4e86?<\/p>\n<pre><code>class Person {     public String name = \"foo\";     public String getName() {         return this.name;     } }  class Student extends Person {     public String name = \"bar\"; }  public class Hello {     public static void main(String[] args) {         Student s = new Student();         System.out.println(s.getName()); \/\/ foo          System.out.println(s.name); \/\/ bar     } }  <\/code><\/pre>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>4<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"3709216\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : yumenawei <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5e2e\u9876~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3709217\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : billlee <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5b57\u6bb5\u6ca1\u6709\u591a\u6001\u6027\uff0cthis.name \u53d6\u7684\u662f\u7f16\u8bd1\u671f this \u53d8\u91cf\u6240\u5c5e\u7c7b\u7684 name, \u5bf9\u4e8e Person::getName \u6765\u8bf4\uff0cthis \u662f Person, this.name \u662f &#8220;foo&#8221;.<br \/>\u5bf9\u4e8e main \u4e2d\u7684 s.name \u6765\u8bf4\uff0cs \u662f Student, s.name \u662f &#8220;bar&#8221;.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3709218\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : oneisall8955 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u591a\u6001\u9488\u5bf9\u63a5\u53e3\uff08\u884c\u4e3a\uff0c\u65b9\u6cd5\uff09\uff0c\u5c5e\u6027\u6ca1\u6709\u591a\u6001                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3709219\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dushe <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             this \u6307\u5411\u6700\u8fd1\u7684\u5bf9\u8c61                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>(\u5c0f\u767d\u95ee\u9898) Java \u5173\u4e8e th&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/167356"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=167356"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/167356\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=167356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=167356"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=167356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}