{"id":10276,"date":"2023-11-28T21:31:27","date_gmt":"2023-11-28T13:31:27","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10276"},"modified":"2023-12-07T11:11:04","modified_gmt":"2023-12-07T03:11:04","slug":"jvm-zhongint-de-zhang-du-shi-duo-shu32wei-he64wei","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhongint-de-zhang-du-shi-duo-shu32wei-he64wei\/","title":{"rendered":"JVM\u4e2dint\u7684\u957f\u5ea6\u662f\u591a\u6570\uff0c32\u4f4d\u548c64\u4f4d\u7684\u533a\u522b\uff1f"},"content":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\u4e2d\uff0c<code>int<\/code>\u7684\u957f\u5ea6\u662f32\u4f4d\uff0c\u65e0\u8bba\u662f\u572832\u4f4d\u7cfb\u7edf\u8fd8\u662f64\u4f4d\u7cfb\u7edf\u4e0a\u3002Java\u8bed\u8a00\u89c4\u8303\u4e2d\u89c4\u5b9a\u4e86\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f\uff0c\u5176\u4e2d<code>int<\/code>\u662f32\u4f4d\u6709\u7b26\u53f7\u6574\u6570\uff0c\u8303\u56f4\u662f-2^31\u52302^31-1\u3002<\/p>\n<p>\u5728\u4e0d\u540c\u7684\u7cfb\u7edf\u67b6\u6784\u4e0a\uff0cJava\u865a\u62df\u673a\u7684\u5b9e\u73b0\u53ef\u80fd\u6709\u4e00\u4e9b\u5dee\u5f02\uff0c\u4f46\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f\u548c\u8303\u56f4\u5728Java\u8bed\u8a00\u89c4\u8303\u4e2d\u662f\u660e\u786e\u5b9a\u4e49\u7684\u3002\u8fd9\u5c31\u610f\u5473\u7740\uff0c<code>int<\/code>\u7c7b\u578b\u5728\u6240\u6709\u7684Java\u865a\u62df\u673a\u5b9e\u73b0\u4e2d\u90fd\u5e94\u8be5\u662f32\u4f4d\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u4e00\u4e2a\u66f4\u5927\u8303\u56f4\u7684\u6574\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528<code>long<\/code>\u7c7b\u578b\uff0c\u5b83\u662f64\u4f4d\u7684\u6709\u7b26\u53f7\u6574\u6570\uff0c\u8303\u56f4\u662f-2^63\u52302^63-1\u3002<\/p>\n<p>\u5728Java\u865a\u62df\u673a\u89c4\u8303\u4e2d\uff0c\u89c4\u5b9a\u4e86\u4ee5\u4e0b\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f\uff1a<\/p>\n<ul>\n<li><code>byte<\/code>: 8\u4f4d\u6709\u7b26\u53f7\u6574\u6570<\/li>\n<li><code>short<\/code>: 16\u4f4d\u6709\u7b26\u53f7\u6574\u6570<\/li>\n<li><code>int<\/code>: 32\u4f4d\u6709\u7b26\u53f7\u6574\u6570<\/li>\n<li><code>long<\/code>: 64\u4f4d\u6709\u7b26\u53f7\u6574\u6570<\/li>\n<li><code>float<\/code>: 32\u4f4dIEEE 754\u5355\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/li>\n<li><code>double<\/code>: 64\u4f4dIEEE 754\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/li>\n<li><code>char<\/code>: 16\u4f4d\u65e0\u7b26\u53f7Unicode\u5b57\u7b26<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u89c4\u5b9a\u786e\u4fdd\u4e86Java\u7a0b\u5e8f\u5728\u4e0d\u540c\u7684\u5e73\u53f0\u4e0a\u5177\u6709\u4e00\u81f4\u7684\u884c\u4e3a\uff0c\u800c\u4e0d\u53d7\u5e95\u5c42\u786c\u4ef6\u67b6\u6784\u7684\u5f71\u54cd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\u4e2d\uff0cint\u7684\u957f\u5ea6\u662f32\u4f4d\uff0c\u65e0\u8bba\u662f\u572832\u4f4d\u7cfb\u7edf\u8fd8\u662f64\u4f4d\u7cfb\u7edf\u4e0a\u3002Java\u8bed\u8a00\u89c4\u8303\u4e2d\u89c4\u5b9a\u4e86\u57fa\u672c\u6570\u636e [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-10276","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10276"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10276\/revisions"}],"predecessor-version":[{"id":16817,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10276\/revisions\/16817"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10276"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}