{"id":979,"date":"2017-12-27T15:08:36","date_gmt":"2017-12-27T07:08:36","guid":{"rendered":"http:\/\/www.netxintai.com\/?p=979"},"modified":"2024-11-16T21:44:28","modified_gmt":"2024-11-16T13:44:28","slug":"java%e5%9f%ba%e7%a1%80%e8%af%ad%e6%b3%95%e4%ba%8c-%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.netxintai.com\/?p=979","title":{"rendered":"Java\u57fa\u7840\u8bed\u6cd5(\u4e8c)–\u6570\u636e\u7c7b\u578b"},"content":{"rendered":"

    <\/strong>    Java\u8bed\u8a00\u662f\u5f3a\u7c7b\u578b\u8bed\u8a00\uff0c\u5bf9\u4e8e\u6bcf\u4e00\u79cd\u6570\u636e\u90fd\u5b9a\u4e49\u4e86\u660e\u786e\u7684\u5177\u4f53\u6570\u636e\u7c7b\u578b\uff0c\u5728\u5185\u5b58\u603b\u5206\u914d\u4e86\u4e0d\u540c\u5927\u5c0f\u7684\u5185\u5b58\u7a7a\u95f4<\/span><\/span><\/p>\n

\"\u56fe\u72471.png\"<\/p>\n

        Java\u4e2d\u4e3b\u8981\u67098\u4e2d\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u516d\u79cd\u6570\u5b57\u7c7b\u578b\uff08\u56db\u4e2a\u6574\u6570\u578b\uff0c\u4e24\u4e2a\u6d6e\u70b9\u578b\uff09\uff0c\u4e00\u79cd\u5b57\u7b26\u7c7b\u578b\uff0c\u8fd8\u6709\u4e00\u79cd\u5e03\u5c14\u578b\u3002<\/span>\u5206\u522b\u662f:byte  short  int  long  float  double  char  boolean.<\/span><\/span><\/span><\/span><\/p>\n

      Java\u4e2d\u6240\u6709\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\u90fd\u6709\u56fa\u5b9a\u7684\u5b58\u50a8\u8303\u56f4\u548c\u6240\u5360\u5185\u5b58\u7a7a\u95f4\u7684\u5927\u5c0f\uff0c\u800c\u4e0d\u53d7\u5177\u4f53\u64cd\u4f5c\u7cfb\u7edf\u7684\u5f71\u54cd\uff0c\u6765\u4fdd\u8bc1Java\u7a0b\u5e8f\u7684\u53ef\u79fb\u690d\u6027\u3002\u6574\u5f62\u6570\u636e\u9ed8\u8ba4\u4e3aint\u6570\u636e\u7c7b\u578b\uff0c\u6d6e\u70b9\u578b\u9ed8\u8ba4\u4e3adouble\u6570\u636e\u7c7b\u578b\uff0c\u5982\u679c\u8981\u8868\u793along\u578b\u6570\u636e\u6216float\u578b\u6570\u636e\uff0c\u8981\u5728\u76f8\u5e94\u7684\u6570\u503c\u540e\u9762\u52a0\u4e0al\u3001L\u6216f\u3001F\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u7f16\u8bd1\u95ee\u9898\u3002<\/span><\/span><\/p>\n

<\/p>\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n\u5360\u7528\u5b58\u50a8\u7a7a\u95f4<\/td>\n\u8868\u8ff0\u8303\u56f4<\/td>\n<\/tr>\n
byte<\/td>\n1\u5b57\u8282<\/td>\n-128\u81f3127<\/td>\n<\/tr>\n
short<\/td>\n2\u5b57\u8282<\/td>\n-2^15 \u81f3 2^15 – 1<\/td>\n<\/tr>\n
int<\/td>\n4\u5b57\u8282<\/td>\n-2^31 \u81f3 2^31 – 1<\/td>\n<\/tr>\n
long<\/td>\n5\u5b57\u8282<\/td>\n-2^63 \u81f3 2^63 -1<\/td>\n<\/tr>\n
float<\/td>\n4\u5b57\u8282<\/td>\n-3.403E38 \u81f3 3.403E38<\/td>\n<\/tr>\n
double<\/td>\n8\u5b57\u8282<\/td>\n-1.78E308 \u81f3 <\/strong>1.798E308<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

       boolean\uff1a\u6570\u636e\u503c\u53ea\u6709true\u6216false\uff0c\u9002\u7528\u4e8e\u903b\u8f91\u8ba1\u7b97\u3002<\/span><\/p>\n

       char\uff1achar\u578b\uff08\u5b57\u7b26\u578b\uff09\u6570\u636e\u5728\u5185\u5b58\u4e2d\u5360\u75282\u4e2a\u5b57\u8282\u3002char\u578b\u6570\u636e\u7528\u6765\u8868\u793a\u901a\u5e38\u610f\u4e49\u4e0a\u7684\u5b57\u7b26\uff0c\u6bcf\u4e2a\u5b57\u7b26\u53602\u4e2a\u5b57\u8282\uff0cJava\u5b57\u7b26\u91c7\u7528Unicode\u7f16\u7801\uff0c\u5b83\u7684\u524d128\u5b57\u8282\u7f16\u7801\u4e0eASCII\u517c\u5bb9\u5b57\u7b26\u7684\u5b58\u50a8\u8303\u56f4\u5728\\u0000~\\uFFFF\uff0c\u5728\u5b9a\u4e49\u5b57\u7b26\u578b\u7684\u6570\u636e\u65f6\u5019\u8981\u6ce8\u610f\u52a0' '\uff0c\u6bd4\u5982 '1'\u8868\u793a\u5b57\u7b26'1'\u800c\u4e0d\u662f\u6570\u503c1\u3002<\/span><\/p>\n

\u57fa\u672c\u6570\u636e\u7c7b\u578b\u95f4\u7684\u8f6c\u6362<\/span><\/strong><\/p>\n

    <\/span><\/span><\/strong>1\u3001boolean\u7c7b\u578b\u4e0d\u80fd\u8f6c\u6362\u6210\u4efb\u4f55\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u3002<\/span><\/p>\n

      2\u3001\u81ea\u52a8\u7c7b\u578b\u8f6c\u6362\uff1a\u5bb9\u91cf\u5c0f\u7684\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u81ea\u52a8\u8f6c\u6362\u6210\u5bb9\u91cf\u5927\u7684\u6570\u636e\u7c7b\u578b<\/span><\/span><\/p>\n

             byte,short,char\u2014int\u2014long\u2014float\u2014double <\/span><\/span><\/span><\/p>\n

   <\/span>         byte,short,char<\/span>\u76f8\u4e92\u4e4b\u95f4\u8865\u8f6c\u6362\uff0c\u4ed6\u4eec\u53c2\u4e0e\u8fd0\u7b97\u9996\u5148\u8f6c\u6362\u4e3a<\/span>int<\/span>\u7c7b\u578b<\/span><\/span><\/span><\/p>\n

      3\u3001\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\uff1a\u5bb9\u91cf\u5927\u7684\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u6210\u5bb9\u91cf\u5c0f\u7684\u6570\u636e\u7c7b\u578b\u65f6\uff0c\u8981\u52a0\u4e0a\u5f3a\u5236\u8f6c\u6362\u7b26\uff0c\u4f46\u8fd9\u6837\u6709\u53ef\u80fd\u4f1a\u9020\u6210\u7cbe\u5ea6\u964d\u4f4e\u6216\u8005\u6570\u636e\u6ea2\u51fa\uff0c\u8981\u5c0f\u5fc3\u3002<\/span><\/span><\/p>\n

        \u8f6c\u6362\u516c\u5f0f\uff1a<\/span>\u76ee\u6807\u7c7b\u578b \u53d8\u91cf\u540d=(\u76ee\u6807\u7c7b\u578b)(\u88ab\u8f6c\u6362\u7684\u6570\u636e)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

        Java\u8bed\u8a00\u662f …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[111,110,112],"_links":{"self":[{"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/posts\/979"}],"collection":[{"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=979"}],"version-history":[{"count":2,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/posts\/979\/revisions"}],"predecessor-version":[{"id":2804,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=\/wp\/v2\/posts\/979\/revisions\/2804"}],"wp:attachment":[{"href":"https:\/\/www.netxintai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.netxintai.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}