{"id":2023,"date":"2020-08-11T20:28:52","date_gmt":"2020-08-11T12:28:52","guid":{"rendered":"http:\/\/admin.evshou.com\/?p=2023"},"modified":"2020-08-12T14:29:30","modified_gmt":"2020-08-12T06:29:30","slug":"2020java%e6%95%99%e7%a8%8b%ef%bc%9a%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b9%8b%e4%b8%89%e4%b8%aa%e4%bf%ae%e9%a5%b0%e7%ac%a6-abstract","status":"publish","type":"post","link":"https:\/\/www.9713job.com\/?p=2023","title":{"rendered":"2020java\u6559\u7a0b\uff1a\u9762\u5411\u5bf9\u8c61\u4e4b\u4e09\u4e2a\u4fee\u9970\u7b26 Abstract"},"content":{"rendered":"

\u9762\u5411\u5bf9\u8c61\u4e4b\u4e09\u4e2a\u4fee\u9970\u7b26 Abstract<\/h3>\n

\u4ec0\u4e48\u662f\u62bd\u8c61\uff1f
\n\u4f3c\u662f\u800c\u975e\u7684\uff0c\u50cf\u5374\u53c8\u4e0d\u662f;\u5177\u5907\u67d0\u79cd\u5bf9\u8c61\u7684\u7279\u5f81\uff0c\u4f46\u4e0d\u5b8c\u6574<\/p>\n

<\/p>\n

\u751f\u6d3b\u4e2d\u7684\u62bd\u8c61
\n\u6bd4\u5982\u5728\u767e\u5ea6\u641c\u7d22\u52a8\u7269\uff0c\u641c\u7d22\u7ed3\u679c\u90fd\u662f “\u52a8\u7269”\u7684\u5b50\u7c7b\u5bf9\u8c61\uff0c\u800c\u6ca1\u6709 “\u52a8\u7269” \u5bf9\u8c61
\n<\/p>\n

<\/p>\n

\u4e0d\u8be5\u88ab\u521b\u5efa\u7684\u5bf9\u8c61<\/p>\n

public class demos{
\npublic static void main(String[] args) {
\nAnimal a=new Animal();
\n\/*
\nAnimal \u4ec5\u662f\u4e00\u79cd\u4f1a\u5403\u4f1a\u7761\u7684\u5bf9\u8c61
\n\u518d\u65e0\u5176\u4ed6\u884c\u4e3a\uff0c\u4e0d\u591f\u5177\u4f53\uff0c\u4e0d\u591f\u5b8c\u6574
\n*\/
\n}
\n}
\nclass Animal{
\nString name;
\nint age;
\npublic Animal(){}
\npublic void eat(){
\nSystem.out.println(“\u52a8\u7269\u518d\u5403…”);
\n}
\npublic void sleep(){
\nSystem.out.println(“\u52a8\u7269\u518d\u7761…”);
\n}
\n}
\n\/*
\n\u7a0b\u5e8f\u662f\u7528\u6765\u6a21\u62df\u73b0\u5b9e\u4e16\u754c\u3001\u89e3\u51b3\u73b0\u5b9e\u95ee\u9898\u7684\uff0c
\n\u73b0\u5b9e\u4e16\u754c\u4e2d\u5b58\u5728\u7684\u90fd\u662f\u201c\u52a8\u7269\u201d\u5177\u4f53\u7684\u5b50\u7c7b\u5bf9\u8c61\uff0c
\n\u5e76\u4e0d\u5b58\u5728\u201c\u52a8\u7269\u201d\u5bf9\u8c61\uff0c
\n\u6240\u4ee5\uff0cAnimal \u4e0d\u5e94\u8be5\u88ab\u72ec\u7acb\u521b\u5efa\u6210\u5bf9\u8c61\u3002
\n*\/<\/p>\n

\u5982\u4f55\u9650\u5236\u8fd9\u79cd\u5bf9\u8c61\u7684\u521b\u5efa\uff1f<\/p>\n

\u62bd\u8c61\u7c7b
\n\u5e94\u7528\uff1aAbstract\u4fee\u9970\u7c7b\uff0c\u6b64\u7c7b\u4e0d\u80fdnew\u5bf9\u8c61<\/p>\n

public class demoss{
\npublic static void main(String[] args) {
\nnew Animal();\/\/Animal\u662f\u62bd\u8c61\u7684\uff0c\u65e0\u6cd5\u5b9e\u4f8b\u5316
\n}
\n}
\nabstract class Animal{
\n\/*
\n\u88ababstract\u4fee\u9970\u7684\u7c7b\uff0c\u79f0\u4e3a \u62bd\u8c61\u7c7b\u3002
\n\u62bd\u8c61\u7c7b\u610f\u4e3a\u4e0d\u5b8c\u6574\u7684\u7c7b\u3001\u4e0d\u591f\u5177\u4f53\u7684\u7c7b\uff0c
\n\u62bd\u8c61\u7c7b\u5bf9\u8c61\u65e0\u6cd5\u72ec\u7acb\u5b58\u5728\uff0c\u5373 \u4e0d\u80fd new \u5bf9\u8c61
\n*\/
\n}
\nclass Dog extends Animal{<\/p>\n

}
\n<\/p>\n

\u62bd\u8c61\u7c7b\u7684\u4f5c\u7528<\/p>\n

public class demoss{
\npublic static void main(String[] args) {
\nAnimal d=new Dog();
\n\/*
\n\u4f5c\u7528\uff1a
\n1.\u53ef\u88ab\u5b50\u7c7b\u7ee7\u627f\uff0c\u63d0\u4f9b\u5171\u6027\u5c5e\u6027\u548c\u65b9\u6cd5\u3002
\n2.\u53ef\u58f0\u660e\u4e3a\u5f15\u7528\uff0c\u5f3a\u5236\u4f7f\u7528\u591a\u6001\u3002
\n*\/
\nd.eat();
\n\/*
\n\u7ecf\u9a8c\uff1a
\n\u62bd\u8c61\u7236\u7c7b\uff0c\u53ef\u4f5c\u4e3a\u5b50\u7c7b\u7684\u7ec4\u6210\u90e8\u5206\uff0c
\n\u4f9d\u9644\u4e8e\u5b50\u7c7b\u5bf9\u8c61\u5b58\u5728\uff0c
\n\u7531 \u7236\u7c7b\u5171\u6027+ \u5b50\u7c7b\u72ec\u6709\u7ec4\u6210\u5b8c\u6574\u7684\u5b50\u7c7b\u5bf9\u8c61\u3002
\n*\/
\n}
\n}
\nabstract class Animal{
\npublic void eat(){
\nSystem.out.println(“\u52a8\u7269\u518d\u5403…”);
\n}
\npublic void sleep(){
\nSystem.out.println(“\u52a8\u7269\u5728\u7761…”);
\n}
\n}
\nclass Dog extends Animal{
\npublic void eat(){
\nSystem.out.println(“\u5b50\u7c7b\u52a8\u7269\u518d\u5403…”);
\n}
\npublic void sleep(){
\nSystem.out.println(“\u5b50\u7c7b\u52a8\u7269\u5728\u7761…”);
\n}
\n}<\/p>\n


\nabstract\u62bd\u8c61\u65b9\u6cd5<\/p>\n

abstract class Animal{\r\n    \/\/\u88ab abstract \u4fee\u9970\u7684\u65b9\u6cd5\u4e3a \u62bd\u8c61\u65b9\u6cd5\r\n    \/\/\u53ea\u6709\u65b9\u6cd5\u7684\u58f0\u660e\uff0c\u6ca1\u6709\u65b9\u6cd5\u4f53\uff0c\u4ee5;\u5206\u53f7\u7ed3\u5c3e\r\n    public abstract void eat();\r\n}\r\nclass Dog extends Animal{\r\n    \/\/\u5982\u679c\u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b\uff0c\u5219\u5fc5\u987b\u8986\u76d6\u7236\u7c7b\u7684\u65b9\u6cd5,\u5426\u5219\u5b50\u7c7b\u8fd8\u662f\u62bd\u8c61\u7c7b\r\n    public void eat(){\r\n        System.out.println(\"\u5b50\u7c7b\u8986\u76d6\u7236\u7c7b\u7684\u5403\u65b9\u6cd5\");\r\n    }\r\n}\r\npublic class demos{\r\n    public static void main(String[] args) {\r\n        Animal d=new Dog();\r\n        d.eat();\r\n    }\r\n}<\/pre>\n
<\/p>\n
\u603b\u7ed3\uff1a
\n1.abstract\u4fee\u9970\u7c7b\uff1a\u4e0d\u80fdnew\u5bf9\u8c61\uff0c\u4f46\u53ef\u4ee5\u58f0\u660e\u5f15\u7528
\n2.abstract\u4fee\u9970\u65b9\u6cd5\uff1a\u53ea\u6709\u65b9\u6cd5\u58f0\u660e\uff0c\u6ca1\u6709\u65b9\u6cd5\u5b9e\u73b0
\n3.\u62bd\u8c61\u7c7b\u4e2d\u4e0d\u4e00\u5b9a\u6709\u62bd\u8c61\u65b9\u6cd5\uff0c\u4f46\u6709\u62bd\u8c61\u65b9\u6cd5\u7684\u7c7b\u4e00\u5b9a\u662f\u62bd\u8c61\u7c7b
\n4.\u5b50\u7c7b\u7ee7\u627f\u62bd\u8c61\u7c7b\u540e\uff0c\u5fc5\u987b\u8986\u76d6\u7236\u7c7b\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5\uff0c\u5426\u5219\u5b50\u7c7b\u8fd8\u662f\u62bd\u8c61\u7c7b<\/p>\n","protected":false},"excerpt":{"rendered":"
\u9762\u5411\u5bf9\u8c61\u4e4b\u4e09\u4e2a\u4fee\u9970\u7b26 Abstract \u4ec0\u4e48\u662f\u62bd\u8c61\uff1f \u4f3c\u662f\u800c\u975e\u7684\uff0c\u50cf\u5374\u53c8\u4e0d\u662f;\u5177\u5907\u67d0\u79cd\u5bf9\u8c61\u7684\u7279\u5f81\uff0c\u4f46\u4e0d\u5b8c\u6574<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-2023","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/2023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2023"}],"version-history":[{"count":5,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/2023\/revisions"}],"predecessor-version":[{"id":2031,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/2023\/revisions\/2031"}],"wp:attachment":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}