{"id":31114,"date":"2024-01-03T15:15:47","date_gmt":"2023-06-24T04:21:20","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%8e%9f%e5%a7%8b%e9%97%ae%e9%a2%98%e5%88%9b%e5%bb%ba3%ef%bc%88java%e5%85%a5%e9%97%a8%e7%af%87%ef%bc%9a%e8%bd%bb%e6%9d%be%e7%90%86%e8%a7%a3java%ef%bc%89\/"},"modified":"2025-08-12T22:24:01","modified_gmt":"2025-08-12T14:24:01","slug":"java%e5%8e%9f%e5%a7%8b%e9%97%ae%e9%a2%98%e5%88%9b%e5%bb%ba3%ef%bc%88java%e5%85%a5%e9%97%a8%e7%af%87%ef%bc%9a%e8%bd%bb%e6%9d%be%e7%90%86%e8%a7%a3java%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%8e%9f%e5%a7%8b%e9%97%ae%e9%a2%98%e5%88%9b%e5%bb%ba3%ef%bc%88java%e5%85%a5%e9%97%a8%e7%af%87%ef%bc%9a%e8%bd%bb%e6%9d%be%e7%90%86%e8%a7%a3java%ef%bc%89\/","title":{"rendered":"java\u539f\u59cb\u95ee\u9898\u521b\u5efa3\uff08java\u5165\u95e8\u7bc7\uff1a\u8f7b\u677e\u7406\u89e3java\uff09"},"content":{"rendered":"

\u8fd9\u662fJava\u539f\u59cb\u95ee\u9898\u521b\u5efa2\u7684\u5ef6\u7eed\u3002<\/p>\n

\u7b2c12\u7ae0\uff08\u9ad8\u7ea7\u7ee7\u627f\uff09\u8bf7\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “hero” \u7684\u5305\uff08\u5c06\u4ee5\u4e0b\u6240\u6709\u7684\u7c7b\u90fd\u653e\u5728\u5176\u4e2d\uff09\u3002
\n\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Hero” \u7684\u62bd\u8c61\u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u540d\u4e3a “attack” \u7684\u62bd\u8c61\u65b9\u6cd5\u548c\u4e00\u4e2a\u540d\u4e3a “guard” \u7684\u62bd\u8c61\u65b9\u6cd5\u3002
\n\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Ahero” \u7684\u7c7b\uff0c\u5b83\u7ee7\u627f\u81ea “Hero” \u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u540d\u4e3a “attack” \u7684\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1aA\u653b\u51fb\uff09\u548c\u4e00\u4e2a\u540d\u4e3a “guard” \u7684\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1aA\u9632\u5fa1\uff09\u3002
\n\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Bhero” \u7684\u7c7b\uff0c\u5b83\u7ee7\u627f\u81ea “Hero” \u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u540d\u4e3a “attack” \u7684\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1aB\u653b\u51fb\uff09\u548c\u4e00\u4e2a\u540d\u4e3a “guard” \u7684\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1aB\u9632\u5fa1\uff09\u3002
\n\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Main” \u7684\u7c7b\uff0c\u5176\u4e2d\u663e\u793a “Ahero” \u548c “Bhero” \u7684\u65b9\u6cd5\u3002<\/p>\n

\u300c\u554f\u984c2\u300d
\n\u8bf7\u521b\u5efacreature\u5305\uff08\u5c06\u4ee5\u4e0b\u6240\u6709\u7684\u7c7b\u5b58\u653e\u5728\u5176\u4e2d\uff09\u3002
\n\u521b\u5efaCreature\u7c7b\uff08\u63a5\u53e3\u58f0\u660e\uff09\uff0c\u5e76\u6dfb\u52a0run\u65b9\u6cd5\u3002
\n\u521b\u5efaBattleCreature\u7c7b\uff08\u7ee7\u627fCreature\u7c7b\uff0c\u58f0\u660e\u63a5\u53e3\uff09\uff0c\u5e76\u6dfb\u52a0attack\u65b9\u6cd5\u3002
\n\u521b\u5efaGoblin\u7c7b\uff08\u5b9e\u73b0BattleCreature\u7c7b\uff09\uff0c\u5e76\u8986\u76d6run\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1a\u54e5\u5e03\u6797\u9003\u8dd1\u4e86\uff09\uff0cattack\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1a\u54e5\u5e03\u6797\u653b\u51fb\u4e86\uff09\u3002
\n\u521b\u5efaMain\u7c7b\uff0c\u5e76\u663e\u793arun\u548cattack\u65b9\u6cd5\u3002<\/p>\n

\u7ed9\u51fa\u7b54\u6848<\/p>\n

\/\/\u554f\u984c\uff11<\/span>\r\npackage<\/span> hero<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n\r\n        public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                Ahero<\/span> a<\/span> =<\/span> new<\/span> Ahero<\/span>();<\/span>\r\n                a<\/span>.<\/span>attack<\/span>();<\/span>\r\n                a<\/span>.<\/span>guard<\/span>();<\/span>\r\n\r\n                Bhero<\/span> b<\/span> =<\/span> new<\/span> Bhero<\/span>();<\/span>\r\n                b<\/span>.<\/span>attack<\/span>();<\/span>\r\n                b<\/span>.<\/span>guard<\/span>();<\/span>\r\n        }<\/span>\r\n}<\/span>\r\n\r\n\r\n\r\n\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\nA\u653b\u6483<\/span>\r\nA\u9632\u5fa1<\/span>\r\nB\u653b\u6483<\/span>\r\nB\u9632\u5fa1<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
package<\/span> hero<\/span>;<\/span>\r\n\r\npublic<\/span> abstract<\/span> class<\/span> Hero<\/span> {<\/span>\r\n        public<\/span> abstract<\/span> void<\/span> attack<\/span>();<\/span>\r\n\r\n        public<\/span> abstract<\/span> void<\/span> guard<\/span>();<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
package<\/span> hero<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Ahero<\/span> extends<\/span> Hero<\/span> {<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> attack<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"A\u653b\u6483\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> guard<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"A\u9632\u5fa1\"<\/span>);<\/span>\r\n\r\n        }<\/span>\r\n\r\n}<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
package<\/span> hero<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Bhero<\/span> extends<\/span> Hero<\/span> {<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> attack<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"B\u653b\u6483\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> guard<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"B\u9632\u5fa1\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\u8bf7\u539f\u8c05\u6211\uff0c\u6211\u4e0d\u80fd\u6765\u53c2\u52a0\u4f60\u7684\u6d3e\u5bf9\u3002\u975e\u5e38\u62b1\u6b49\uff0c\u6211\u5f88\u9057\u61be\u9519\u8fc7\u8fd9\u4e2a\u673a\u4f1a\u3002<\/p>\n
\/\/\u554f\u984c2<\/span>\r\npackage<\/span> creature<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n        \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n        Goblin<\/span> g<\/span> =<\/span> new<\/span> Goblin<\/span>();<\/span>\r\n        g<\/span>.<\/span>run<\/span>();<\/span>\r\n        g<\/span>.<\/span>attack<\/span>();<\/span>\r\n    }<\/span>\r\n\r\n}<\/span>\r\n\r\n\r\n\r\n\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n\u30b4\u30d6\u30ea\u30f3\u306f\u9003\u3052\u305f<\/span>\r\n\u30b4\u30d6\u30ea\u30f3\u306f\u653b\u6483\u3057\u305f<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
package<\/span> creature<\/span>;<\/span>\r\n\r\npublic<\/span> interface<\/span> Creature<\/span> {<\/span>\r\n\r\n        void<\/span> run<\/span>();<\/span>\r\n}<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
package<\/span> creature<\/span>;<\/span>\r\n\r\npublic<\/span> interface<\/span> BattleCreature<\/span> extends<\/span> Creature<\/span> {<\/span>\r\n        void<\/span> attack<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
package<\/span> creature<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Goblin<\/span> implements<\/span> BattleCreature<\/span>{<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> run<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b4\u30d6\u30ea\u30f3\u306f\u9003\u3052\u305f\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> attack<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b4\u30d6\u30ea\u30f3\u306f\u653b\u6483\u3057\u305f\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7b2c13\u7ae0\uff08\u591a\u6837\u6027\uff09
\n\u95ee\u98981:
\n\u521b\u5efamonster\u5305\uff08\u5c06\u4ee5\u4e0b\u6240\u6709\u7684\u7c7b\u90fd\u653e\u5728\u8fd9\u91cc\uff09\u3002
\n\u521b\u5efaMonster\u7c7b\uff08\u58f0\u660e\u63a5\u53e3\uff09\uff0c\u5e76\u6dfb\u52a0run\u65b9\u6cd5\uff08\u62bd\u8c61\u65b9\u6cd5\uff09\u3002
\n\u521b\u5efaSlime\u7c7b\uff08\u5b9e\u73b0Monster\u7c7b\uff09\uff0c\u5e76\u6dfb\u52a0run\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1a\u53f2\u83b1\u59c6\u9003\u8dd1\u4e86\uff09\u3002
\n\u521b\u5efaGoblin\u7c7b\uff08\u5b9e\u73b0Monster\u7c7b\uff09\uff0c\u5e76\u6dfb\u52a0run\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1a\u54e5\u5e03\u6797\u9003\u8dd1\u4e86\uff09\u3002
\n\u521b\u5efaDeathBat\u7c7b\uff08\u5b9e\u73b0Monster\u7c7b\uff09\uff0c\u5e76\u6dfb\u52a0run\u65b9\u6cd5\uff08\u5185\u5bb9\u4e3a\uff1a\u5730\u72f1\u8759\u8760\u9003\u8dd1\u4e86\uff09\u3002<\/p>\n
\u8bf7\u521b\u5efa\u4e00\u4e2aMain\u7c7b\uff0c\u5e76\u5728run\u65b9\u6cd5\u4e2d\u7528\u4e00\u884c\u4ee3\u7801\u8c03\u7528\u6bcf\u4e2a\u5185\u5bb9\u3002<\/p>\n
\u63d0\u793a:
\n– \u521b\u5efa\u4e00\u4e2a\u540d\u4e3aMonster\u7684\u6570\u7ec4\uff08\u5305\u542b3\u4e2a\u5143\u7d20\uff09\u3002
\n– \u5728\u6bcf\u4e2a\u5143\u7d20\u4e2d\u63d2\u5165\u76f8\u5e94\u7684\u5b9e\u4f8b\u3002
\n– \u4f7f\u7528\u589e\u5f3a\u578bfor\u5faa\u73af\u8c03\u7528run\u65b9\u6cd5\u3002<\/p>\n
\u56de\u7b54\u95ee\u9898<\/p>\n
\/\/\u554f\u984c\uff11<\/span>\r\npackage<\/span> monster<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n\r\n        public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                Monster<\/span>[]<\/span> monsters<\/span> =<\/span> new<\/span> Monster<\/span>[<\/span>3<\/span>];<\/span>\r\n                monsters<\/span>[<\/span>0<\/span>]<\/span> =<\/span> new<\/span> Slime<\/span>();<\/span>\r\n                monsters<\/span>[<\/span>1<\/span>]<\/span> =<\/span> new<\/span> Goblin<\/span>();<\/span>\r\n                monsters<\/span>[<\/span>2<\/span>]<\/span> =<\/span> new<\/span> DeathBat<\/span>();<\/span>\r\n\r\n                for<\/span> (<\/span>Monster<\/span> mo<\/span> :<\/span> monsters<\/span>)<\/span> {<\/span>\r\n                        mo<\/span>.<\/span>run<\/span>();<\/span>\r\n                }<\/span>\r\n        }<\/span>\r\n\r\n}<\/span>\r\n\r\n\r\n\r\n\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n\u30b9\u30e9\u30a4\u30e0\u306f\u9003\u3052\u305f<\/span>\r\n\u30b4\u30d6\u30ea\u30f3\u306f\u9003\u3052\u305f<\/span>\r\n\u5730\u7344\u30b3\u30a6\u30e2\u30ea\u306f\u9003\u3052\u305f<\/span>\r\n<\/code><\/pre>\n
package<\/span> monster<\/span>;<\/span>\r\n\r\npublic<\/span> interface<\/span> Monster<\/span> {<\/span>\r\n         void<\/span> run<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
package<\/span> monster<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Slime<\/span> implements<\/span> Monster<\/span> {<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> run<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b9\u30e9\u30a4\u30e0\u306f\u9003\u3052\u305f\"<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
package<\/span> monster<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Goblin<\/span> implements<\/span> Monster<\/span> {<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> run<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b4\u30d6\u30ea\u30f3\u306f\u9003\u3052\u305f\"<\/span>);<\/span>\r\n\r\n        }<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
package<\/span> monster<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> DeathBat<\/span> implements<\/span> Monster<\/span> {<\/span>\r\n\r\n        @Override<\/span>\r\n        public<\/span> void<\/span> run<\/span>()<\/span> {<\/span>\r\n                \/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u5730\u7344\u30b3\u30a6\u30e2\u30ea\u306f\u9003\u3052\u305f\"<\/span>);<\/span>\r\n\r\n        }<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
Java\u539f\u59cb\u95ee\u9898\u521b\u5efa1\uff08Java\u5165\u95e8\u7bc7\uff1a\u6e05\u6670\u6613\u61c2\u7684Java\uff09<\/p>\n
Java\u539f\u59cb\u95ee\u9898\u521b\u5efa2\uff08Java\u5165\u95e8\u7bc7\uff1a\u8f7b\u677e\u7406\u89e3Java\uff09<\/p>\n
\u656c\u8bf7\u671f\u5f85\u4e0b\u96c6
\nJava\u5165\u9580\u7de8\u3067\u30b9\u30c3\u30ad\u30ea\u308f\u304b\u308b\u3088\u3046\u306bJava\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u554f\u984c\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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