{"id":203759,"date":"2025-05-22T14:28:15","date_gmt":"2025-05-22T06:28:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203759\/"},"modified":"2025-05-22T14:28:15","modified_gmt":"2025-05-22T06:28:15","slug":"java-%e4%b8%ad-int%e3%80%81integer%e3%80%81double%e3%80%81double-%e7%ad%89%e5%80%bc%e6%af%94%e8%be%83%ef%bc%9a-%e8%bf%90%e7%ae%97%e7%ac%a6%e5%92%8c-equals-%e6%96%b9%e6%b3%95%e7%9a%84%e5%8c%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203759\/","title":{"rendered":"Java \u4e2d int\u3001Integer\u3001double\u3001Double \u7b49\u503c\u6bd4\u8f83\uff1a== \u8fd0\u7b97\u7b26\u548c equals() \u65b9\u6cd5\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java \u4e2d int\u3001Integer\u3001double\u3001Double \u7b49\u503c\u6bd4\u8f83\uff1a== \u8fd0\u7b97\u7b26\u548c equals() \u65b9\u6cd5\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u600e\u4e48\u5165\u95e8\u6587\u7ae0\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aJava \u4e2d int\u3001Integer\u3001double\u3001Double \u7b49\u503c\u6bd4\u8f83\uff1a== \u8fd0\u7b97\u7b26\u548c equals() \u65b9\u6cd5\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n

<\/p>\n

\u5173\u4e8e int\u3001integer\u3001double\u3001double \u7b49\u503c\u7684\u6bd4\u8f83<\/strong><\/p>\n

\u5728 java \u4e2d\uff0c\u4e0d\u540c\u7c7b\u578b\u4e4b\u95f4\u8fdb\u884c\u6bd4\u8f83\u65f6\u9700\u8981\u8003\u8651\u57fa\u672c\u7c7b\u578b\u548c\u5305\u88c5\u7c7b\u4e4b\u95f4\u7684\u5dee\u5f02\u3002\u8ba9\u6211\u4eec\u63a2\u7a76\u4ee5\u4e0b\u793a\u4f8b\u4e2d\u51fa\u73b0\u7684\u6bd4\u8f83\u884c\u4e3a\uff1a<\/p>\n

int a = 10;\nDouble b = 10.0;\ndouble c = 10;\nDouble d = 10.0;\nInteger e = 10;<\/pre>\n
== \u8fd0\u7b97\u7b26\u7684\u884c\u4e3a<\/strong><\/p>\n
    \n
  • \u57fa\u672c\u7c7b\u578b:<\/strong> int \u548c double \u7b49\u57fa\u672c\u7c7b\u578b\u4f7f\u7528 == \u8fd0\u7b97\u7b26\u8fdb\u884c\u76f4\u63a5\u7684\u503c\u6bd4\u8f83\u3002\u56e0\u6b64\uff0ca == c \u4e3a true\uff0c\u56e0\u4e3a\u4e24\u8005\u90fd\u662f 10.<\/li>\n
  • \u5305\u88c5\u7c7b:<\/strong> integer \u548c double \u7b49\u5305\u88c5\u7c7b\u4ee3\u8868\u57fa\u672c\u7c7b\u578b\u7684\u503c\uff0c\u4f46\u5b83\u4eec\u662f\u5bf9\u8c61\u3002== \u8fd0\u7b97\u7b26\u7528\u4e8e\u6bd4\u8f83\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u56e0\u6b64 b == d \u4e3a false\uff0c\u5373\u4f7f\u5b83\u4eec\u90fd\u8868\u793a\u76f8\u540c\u7684\u503c\u3002<\/li>\n<\/ul>\n
    b == e \u7f16\u8bd1\u65f6\u51fa\u9519<\/strong><\/p>\n
    \u7531\u4e8e integer \u548c double \u90fd\u662f\u6570\u5b57\u5305\u88c5\u7c7b\uff0c\u6240\u4ee5\u4e0d\u80fd\u76f4\u63a5\u7528 == \u6bd4\u8f83\u3002\u60a8\u53ea\u80fd\u4f7f\u7528 == \u6765\u6bd4\u8f83\u540c\u4e00\u4e2a\u5305\u88c5\u7c7b\u7684\u4e24\u4e2a\u5bf9\u8c61\u3002\u56e0\u6b64\uff0cb == e \u7f16\u8bd1\u65f6\u4f1a\u51fa\u9519\u3002<\/p>\n
    \u4f7f\u7528 equals() \u65b9\u6cd5\u8fdb\u884c\u503c\u6bd4\u8f83<\/strong><\/p>\n
    \u5f53\u6bd4\u8f83\u5305\u88c5\u7c7b\u4e2d\u7684\u503c\u65f6\uff0c\u4f7f\u7528 equals() \u65b9\u6cd5\u6bd4 == \u8fd0\u7b97\u7b26\u66f4\u5408\u9002\u3002equals() \u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684\u503c\uff0c\u800c\u4e0d\u662f\u5b83\u4eec\u7684\u5f15\u7528\u3002\u56e0\u6b64\uff0cb.equals(d) \u548c e.equals(a) \u90fd\u8fd4\u56de true\u3002<\/p>\n
    \u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aJava \u4e2d int\u3001Integer\u3001double\u3001Double \u7b49\u503c\u6bd4\u8f83\uff1a== \u8fd0\u7b97\u7b26\u548c equals() \u65b9\u6cd5\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java \u4e2d int\u3001Integ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203759","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203759"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203759\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}