{"id":944,"date":"2013-10-21T19:12:27","date_gmt":"2013-10-21T11:12:27","guid":{"rendered":"http:\/\/blog.dayandcarrot.net\/?p=814"},"modified":"2013-10-21T19:12:27","modified_gmt":"2013-10-21T11:12:27","slug":"c-override%e9%87%8d%e5%86%99%e4%b8%8enew%e9%9a%90%e8%97%8f%e7%9a%84%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=944","title":{"rendered":"C# override\u91cd\u5199\u4e0enew\u9690\u85cf\u7684\u533a\u522b"},"content":{"rendered":"

C#\u6bd4java\u591a\u4e00\u4e2anew\u9690\u85cf\u7684\u529f\u80fd\u3002C# override\u91cd\u5199\u76f8\u5f53\u4e8ejava\u4e2d\u6ca1\u6709\u5173\u952e\u5b57\u7684\u65b9\u6cd5\u91cd\u5199\u3002\u6240\u4ee5java\u4e2d\u65b9\u6cd5\u662f\u6ca1\u6709\u9690\u85cf\u529f\u80fd\u7684\u3002
\nC# override\u91cd\u5199\uff0c\u662f\u6307\u5bf9\u7236\u7c7b\u4e2d\u7684\u865a\u65b9\u6cd5\uff08\u6807\u8bb0virtual\uff09\u6216\u62bd\u8c61\u65b9\u6cd5\uff08\u6807\u8bb0\u4e3aabstract\uff09\u8fdb\u884c\u91cd\u5199\uff0c\u5b9e\u73b0\u65b0\u7684\u529f\u80fd\uff0c\u5b83\u5fc5\u987b\u4e0e\u7236\u7c7b\u65b9\u6cd5\u7684\u7b7e\u540d\u5b8c\u5168\u4e00\u81f4\uff0c\u800c\u4e14\u4e0e\u7236\u7c7b\u65b9\u6cd5\u7684\u53ef\u8bbf\u95ee\u6027\u4e5f\u5fc5\u987b\u4e00\u81f4 new\u9690\u85cf\uff0c\u662f\u6307\u5728\u5b50\u7c7b\u4e2d\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e2a\u7b7e\u540d\u4e0e\u7236\u7c7b\u7684\u65b9\u6cd5\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u4e0d\u7528new\u4fee\u9970\uff0c\u53ea\u662f\u7f16\u8bd1\u65f6\u4f1a\u5f39\u51fa\u4e00\u4e2a\u8b66\u544a\u4fe1\u606f\uff1a\u5982\u679c\u662f\u6709\u610f\u9690\u85cf\uff0c\u8bf7\u4f7f\u7528\u5173\u952e\u5b57new\u3002
\n
\nusing System;
\npublic class Test
\n{
\n public static void Main(String[] args){
\n A a=new B();
\n Console.Write(a.getVal()); \/\/ \u8f93\u51fa:A \u867d\u7136\u5b9e\u4f8b\u662fB\uff0c\u4f46\u662f\u6267\u884c\u7684\u5374\u662fA\u7684\u65b9\u6cd5
\n a=new C();
\n Console.Write(a.getVal()); \/\/ \u8f93\u51fa:C \u5b9e\u4f8b\u662fC\uff0c\u800c\u4e14C\u91cd\u5199\u7684A\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6267\u884cC\u7684\u65b9\u6cd5
\n B b=new B();
\n Console.Write(b.getVal()); \/\/ \u8f93\u51fa:B \u53ea\u6709\u5b9a\u4e49\u548c\u5b9e\u4f8b\u90fd\u662fB\uff0c\u624d\u6267\u884cB\u7684\u65b9\u6cd5
\n }
\n}
\nclass A
\n{
\n \/\/ \u8981\u5141\u8bb8\u5b50\u7c7b\u91cd\u5199\uff0c\u65b9\u6cd5\u5fc5\u987b\u6807\u8bc6\u4e3avirtual \u6216 abstract
\n public virtual String getVal(){
\n return \"A\";
\n }
\n}
\nclass B : A
\n{
\n \/\/ \u9690\u85cf\u7236\u7c7b\u65b9\u6cd5 \u7528new\u6807\u8bc6\uff0c\u4e0d\u6807\u8bc6\u65f6\u4f1a\u51fa\u73b0\u7f16\u8bd1\u8b66\u544a\uff0c\u4e0d\u5f71\u54cd\u4f7f\u7528
\n public new String getVal(){
\n return \"B\";
\n }
\n}
\nclass C : A
\n{
\n \/\/ \u91cd\u5199\u65b9\u6cd5 \u5fc5\u987b\u7528override\u6807\u8bc6
\n public override String getVal(){
\n return \"C\";
\n }
\n}
\n<\/code>
\n\u800c\u5728Java\u4e2d\uff0c\u4e0d\u5b58\u5728\u9690\u85cf\u7236\u7c7b\u65b9\u6cd5\u8fd9\u4e00\u6982\u5ff5\uff0cJava\u53ea\u6709\u91cd\u5199\u65b9\u6cd5\u8fd9\u4e00\u6982\u5ff5\uff0c\u540c\u6837\u7684\u4ee3\u7801\uff0c\u5728Java\u4e2d\u6267\u884c\u548cC#\u4e2d\u6267\u884c\u622a\u7136\u4e0d\u540c\uff1a
\n
\nclass test
\n{
\n public static void main(String[] args)
\n {
\n A a=new B();
\n\/\/ \u8f93\u51fa:B \u5b9e\u4f8b\u662fB\uff0c\u6267\u884c\u7684\u4e5f\u662fB\u7684\u65b9\u6cd5\uff08\u5728C#\u4e2d\uff0c\u6b64\u65f6\u5e94\u8be5\u8f93\u51faA\uff09
\n System.out.println(a.getVal());
\n a=new A();
\n\/\/ \u8f93\u51fa:A \u53ea\u6709\u5b9a\u4e49\u548c\u5b9e\u4f8b\u90fd\u662fA\uff0c\u624d\u6267\u884cA\u7684\u65b9\u6cd5
\n System.out.println(a.getVal());
\n }
\n}
\nclass A
\n{
\n public String getVal(){
\n return \"A\";
\n }
\n}
\nclass B extends A
\n{
\n public String getVal(){
\n return \"B\";
\n }
\n}
\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

C#\u6bd4java\u591a\u4e00\u4e2anew\u9690\u85cf\u7684\u529f\u80fd\u3002C# override\u91cd\u5199\u76f8\u5f53\u4e8ejava\u4e2d\u6ca1\u6709\u5173\u952e\u5b57\u7684\u65b9\u6cd5\u91cd\u5199\u3002\u6240\u4ee5java\u4e2d\u65b9\u6cd5\u662f\u6ca1\u6709\u9690\u85cf\u529f\u80fd\u7684\u3002 C# override\u91cd\u5199\uff0c\u662f\u6307\u5bf9\u7236\u7c7b\u4e2d\u7684\u865a\u65b9\u6cd5\uff08\u6807\u8bb0virtual\uff09\u6216\u62bd\u8c61\u65b9\u6cd5\uff08\u6807\u8bb0\u4e3aabstract\uff09\u8fdb\u884c\u91cd\u5199\uff0c\u5b9e\u73b0\u65b0\u7684\u529f\u80fd\uff0c\u5b83\u5fc5\u987b\u4e0e\u7236\u7c7b\u65b9\u6cd5\u7684\u7b7e\u540d\u5b8c\u5168\u4e00\u81f4\uff0c\u800c\u4e14\u4e0e\u7236\u7c7b\u65b9\u6cd5\u7684\u53ef\u8bbf\u95ee\u6027\u4e5f\u5fc5\u987b\u4e00\u81f4 new\u9690\u85cf\uff0c\u662f\u6307\u5728\u5b50\u7c7b\u4e2d\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e2a\u7b7e\u540d\u4e0e\u7236\u7c7b\u7684\u65b9\u6cd5\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u4e0d\u7528new\u4fee\u9970\uff0c\u53ea\u662f\u7f16\u8bd1\u65f6\u4f1a\u5f39\u51fa\u4e00\u4e2a\u8b66\u544a\u4fe1\u606f\uff1a\u5982\u679c\u662f\u6709\u610f\u9690\u85cf\uff0c\u8bf7\u4f7f\u7528\u5173\u952e\u5b57new\u3002 using System; public class Test { public static void Main(String[] args){ A a=new B(); Console.Write(a.getVal()); \/\/ \u8f93\u51fa:A \u867d\u7136\u5b9e\u4f8b\u662fB\uff0c\u4f46\u662f\u6267\u884c\u7684\u5374\u662fA\u7684\u65b9\u6cd5 a=new C(); Console.Write(a.getVal()); \/\/ \u8f93\u51fa:C \u5b9e\u4f8b\u662fC\uff0c\u800c\u4e14C\u91cd\u5199\u7684A\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6267\u884cC\u7684\u65b9\u6cd5 B b=new B(); Console.Write(b.getVal()); \/\/ \u8f93\u51fa:B \u53ea\u6709\u5b9a\u4e49\u548c\u5b9e\u4f8b\u90fd\u662fB\uff0c\u624d\u6267\u884cB\u7684\u65b9\u6cd5 } } class A { \/\/ \u8981\u5141\u8bb8\u5b50\u7c7b\u91cd\u5199\uff0c\u65b9\u6cd5\u5fc5\u987b\u6807\u8bc6\u4e3avirtual \u6216 abstract public virtual String getVal(){ return “A”; } } class B […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[28],"class_list":["post-944","post","type-post","status-publish","format-standard","hentry","category-study","tag-c"],"_links":{"self":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=944"}],"version-history":[{"count":0,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/944\/revisions"}],"wp:attachment":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}