{"id":185,"date":"2023-11-09T21:35:17","date_gmt":"2023-11-09T13:35:17","guid":{"rendered":"http:\/\/ericw.top\/?p=185"},"modified":"2023-11-09T21:35:32","modified_gmt":"2023-11-09T13:35:32","slug":"java-%e5%85%b3%e9%94%ae%e5%ad%97","status":"publish","type":"post","link":"http:\/\/ericw.top\/?p=185","title":{"rendered":"JAVA \u5173\u952e\u5b57"},"content":{"rendered":"<h1 id=\"toc-0\">\u5173\u952e\u5b57<\/h1>\n<p><strong>Java\u5173\u952e\u5b57\u662f\u6709\u7279\u522b\u610f\u4e49\u7684\u6807\u8bc6\u7b26\u3002\u7528\u6765\u8868\u793a\u4e00\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u6216\u8005\u8868\u793a\u7a0b\u5e8f\u7684\u7ed3\u6784\u7b49\u3002<\/strong><\/p>\n<p><strong>Java\u5173\u952e\u5b57\u4e0d\u80fd\u7528\u4f5c\u53d8\u91cf\u540d\u3001\u65b9\u6cd5\u540d\u3001\u7c7b\u540d\u3001\u5305\u540d\u548c\u53c2\u6570\u3002<\/strong><\/p>\n<blockquote>\n<p>\u300cJava\u4e2d53\u4e2a\u5173\u952e\u5b57\u7684\u610f\u4e49\u53ca\u4f7f\u7528\u65b9\u6cd5\u300d<\/p>\n<\/blockquote>\n<p>48\u4e2a\u5173\u952e\u5b57\uff1aabstract\u3001assert\u3001boolean\u3001break\u3001byte\u3001case\u3001catch\u3001char\u3001class\u3001continue\u3001default\u3001do\u3001double\u3001else\u3001enum\u3001extends\u3001final\u3001finally\u3001float\u3001for\u3001if\u3001implements\u3001import\u3001int\u3001interface\u3001instanceof\u3001long\u3001native\u3001new\u3001package\u3001private\u3001protected\u3001public\u3001return\u3001short\u3001static\u3001strictfp\u3001super\u3001switch\u3001synchronized\u3001this\u3001throw\u3001throws\u3001transient\u3001try\u3001void\u3001volatile\u3001while\u3002<\/p>\n<p>2\uff092\u4e2a\u4fdd\u7559\u5b57\uff08\u73b0\u5728\u6ca1\u7528\u4ee5\u540e\u53ef\u80fd\u7528\u5230\u4f5c\u4e3a\u5173\u952e\u5b57\uff09\uff1agoto\u3001const\u3002<\/p>\n<p>3\uff093\u4e2a\u7279\u6b8a\u76f4\u63a5\u91cf\uff1atrue\u3001false\u3001null\u3002<\/p>\n<h2 id=\"toc-1\">\u5173\u952e\u5b57\u4ecb\u7ecd\u53ca\u5176\u4f5c\u7528<\/h2>\n<h3 id=\"toc-2\">\u8bbf\u95ee\u4fee\u9970\u7b26\u5173\u952e\u5b57\uff083\u4e2a\uff09<\/h3>\n<p><strong>public  \u516c\u6709\u7684\uff08\u9ed8\u8ba4\u4fee\u9970\u7b26\uff0c\u53ef\u8de8\u5305\uff09<br \/>\nprotected  \u53d7\u4fdd\u62a4\u7684\uff08\u5f53\u524d\u5305\u5185\u4f7f\u7528\uff09<br \/>\nprivate  \u79c1\u6709\u7684\uff08\u5f53\u524d\u7c7b\u53ef\u7528\uff09<\/strong><\/p>\n<h3 id=\"toc-3\">\u5b9a\u4e49\u7c7b\u3001\u63a5\u53e3\u3001\u62bd\u8c61\u7c7b\u3001\u5b9e\u73b0\u63a5\u53e3\u3001\u7ee7\u627f\u7c7b\u7684\u5173\u952e\u5b57\uff086\u4e2a\uff09<\/h3>\n<p><strong>class  \u7c7b\uff08{}\u62ec\u53f7\u5185\u6709\u4ee5\u5b9e\u73b0\u7684\u65b9\u6cd5\u4f53\u3001\u7c7b\u540d\u9700\u8981\u4e0e\u6587\u4ef6\u540d\u76f8\u540c\uff09<br \/>\ninterface  \u63a5\u53e3\uff08{}\u62ec\u53f7\u5185\u6709\u65b9\u6cd5\u4f53\u3001\u6ca1\u6709\u5b9e\u73b0\uff09<br \/>\nabstract  \u58f0\u660e\u62bd\u8c61\uff08\u4ecb\u4e8e\u7c7b\u548c\u63a5\u53e3\u4e4b\u95f4\uff0c\u53ef\u4ee5\u6709\u4e5f\u53ef\u4ee5\u6ca1\u6709\u5b9e\u73b0\u7684\u65b9\u6cd5\u4f53\uff09<br \/>\nimplements  \u5b9e\u73b0\uff08\u7528\u4e8e\u7c7b\u6216\u63a5\u53e3\u5b9e\u73b0\u63a5\u53e3\uff09<br \/>\nextends  \u7ee7\u627f\uff08\u7528\u4e8e\u7ee7\u627f\u7c7b\uff09<br \/>\nnew  \u521b\u5efa\u65b0\u5bf9\u8c61\uff08\u521b\u5efa\u65b0\u5bf9\u8c61\uff09<\/strong><\/p>\n<h3 id=\"toc-4\">\u5305\u7684\u5173\u952e\u5b57\uff082\u4e2a\uff09<\/h3>\n<p><strong>import  \u5f15\u5165\u5305\uff08\u5f53\u524d\u7c7b\u9700\u8981\u5f15\u5165\u5176\u4ed6\u5305\u65f6\u4f7f\u7528\uff09<br \/>\npackage  \u5b9a\u4e49\u5305\uff08\u5c06\u6240\u6709\u7684\u6709\u5173\u7c7b\u653e\u5728\u4e00\u4e2a\u5305\u7c7b\u4ee5\u4fbf\u4e8e\u67e5\u627e\u4fee\u6539\uff09<\/strong><\/p>\n<h3 id=\"toc-5\">\u6570\u636e\u7c7b\u578b\u7684\u5173\u952e\u5b57\uff0812\u4e2a\uff09<\/h3>\n<p><strong>byte  \u5b57\u8282\u578b\uff088bit\uff09<br \/>\nchar  \u5b57\u7b26\u578b\uff0816bit\uff09<br \/>\nboolean  \u5e03\u5c14\u578b<br \/>\nshort  \u77ed\u6574\u578b\uff0816bit\uff09<br \/>\nint  \u6574\u6570\uff0832bit\uff09<br \/>\nfloat  \u6d6e\u70b9\u578b\uff0832bit\uff09<br \/>\nlong  \u957f\u6574\u578b\uff0864bit\uff09<br \/>\naouble  \u53cc\u7cbe\u5ea6\uff0864bit\uff09<br \/>\nviod  \u65e0\u8fd4\u56de\uff08\u5e38\u4e0ereturn\u8fde\u7528\uff09<br \/>\nnull  \u7a7a\u503c<br \/>\ntrue  \u771f<br \/>\nfalse  \u5047<\/strong><\/p>\n<h3 id=\"toc-6\">\u6761\u4ef6\u5faa\u73af\u3001\u6d41\u7a0b\u63a7\u5236\uff0812\u4e2a\uff09<\/h3>\n<p><strong>if  \u5982\u679c\uff08\u5206\u652f\u8bed\u53e5\uff09<br \/>\nelse  \u5426\u5219\uff08\u5206\u652f\u8bed\u53e5\uff09<br \/>\nwhile  \u5f53...\u65f6\u5019\uff08\u5206\u652f\u8bed\u53e5\uff09<br \/>\nfor  \u5faa\u73af\u7ed3\u6784\u7684\u5f15\u5bfc\u8bcd\uff08\u5faa\u73af\u8bed\u53e5\uff09<br \/>\nswitch  \u5faa\u73af\u5f00\u5173\uff08\u5faa\u73af\u8bed\u53e5\uff09<br \/>\ncase  \u5f00\u5173\u8fd4\u56de\u7ed3\u679c\uff08\u5faa\u73af\u8bed\u53e5\uff09<br \/>\ndefault  \u9ed8\u8ba4<br \/>\ndo  \u8fd0\u884c\uff08\u4e0ewhile\u8fde\u7528 do..while\u8bed\u53e5\uff09<br \/>\nbreak  \u8df3\u51fa\u5faa\u73af\uff08\u7ed3\u675f\u7ed3\u6784\u8bed\u53e5\uff09<br \/>\ncontinue  \u7ee7\u7eed\uff08\u4e2d\u65ad\u5faa\u73af\u8bed\u53e5\uff0c\u5e76\u5f00\u59cb\u4e0b\u4e00\u6b21\uff09<br \/>\nreturn  \u8fd4\u56de\uff08\u8fd4\u56de\u503c\uff09<br \/>\ninstanceof  \u5b9e\u4f8b\uff08\u7528\u6765\u786e\u5b9a\u5bf9\u8c61\u6240\u5c5e\u7684\u7c7b\uff09<\/strong><\/p>\n<h3 id=\"toc-7\">\u4fee\u9970\u65b9\u6cd5\u3001\u7c7b\u3001\u5c5e\u6027\u3001\u53d8\u91cf\uff089\u4e2a\uff09<\/h3>\n<p><strong>static  \u9759\u6001\uff08\u5c5e\u6027\u548c\u65b9\u6cd5\u90fd\u53ef\u4ee5\u7528static\u4fee\u9970\uff0c\u5185\u90e8\u7c7b\uff09<br \/>\nfinal  \u6700\u7ec8\uff08\u65b9\u6cd5\u548c\u7c7b\u90fd\u53ef\u4ee5\u7528final\u4fee\u9970\uff0c\u5e38\u91cf\uff09<br \/>\nsuper  \u8c03\u7528\u7236\u7c7b\uff08\u8c03\u7528\u7236\u7c7b\u7684\u65b9\u6cd5\uff09<br \/>\nthis  \u5f53\u524d\u7c7b\u7684\u5bf9\u8c61\uff08\u8c03\u7528\u5f53\u524d\u65b9\u6cd5\u7684\u5bf9\u8c61\uff09<br \/>\nnative  \u672c\u5730\uff08\u6307\u793a\u8be5\u65b9\u6cd5\u662f\u7528Java\u4ee5\u5916\u7684\u8bed\u8a00\u5b9e\u73b0\u7684\uff09<br \/>\nstrictfp  \u4e25\u683c\uff08\u7528\u6765\u58f0\u660eFP_strict\u8868\u8fbe\u5f0f\u9075\u5faaIEEE 754\u7b97\u672f\u89c4\u8303\uff09<br \/>\nsynchronized  \u7ebf\u7a0b\uff08\u4ee3\u7801\u9700\u8981\u540c\u6b65\u591a\u7ebf\u7a0b\uff09<br \/>\ntransient  \u77ed\u6682\uff08\u58f0\u660e\u4e0d\u7528\u5e8f\u5217\u5316\u7684\u6210\u5458\u57df\uff09<br \/>\nvolatile  \u6613\u5931\uff08\u8868\u793a\u53ef\u88ab\u591a\u4e2a\u7ebf\u7a0b\u5f02\u6b65\u4fee\u6539\u7684\u6210\u5458\u53d8\u91cf\uff09<\/strong><\/p>\n<h3 id=\"toc-8\">\u9519\u8bef\u5904\u7406\uff085\u4e2a\uff09<\/h3>\n<p><strong>catch  \u5904\u7406\u5f02\u5e38\uff08\u6355\u6349\u5f02\u5e38\uff09<br \/>\ntry  \u6355\u83b7\u5f02\u5e38\uff08\u5c1d\u8bd5\u53ef\u80fd\u629b\u51fa\u5f02\u5e38\u7684\u7a0b\u5e8f\u5757\uff09<br \/>\nfinally  \u5f3a\u5236\u6267\u884c\uff08\u7528\u4e8e\u58f0\u660e\u80af\u5b9a\u6267\u884c\u7684\u4ee3\u7801\uff09<br \/>\nthrow  \u629b\u51fa\u5f02\u5e38\uff08\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38 \u7528\u4e8e\u5f15\u53d1\u5f02\u5e38\uff09<br \/>\nthrows  \u5f02\u5e38\u88ab\u629b\u51fa\uff08\u58f0\u660e\u6210\u5458\u65b9\u6cd5\u4e2d\u9700\u8981\u629b\u51fa\u7684\u5f02\u5e38\uff09<\/strong><\/p>\n<h3 id=\"toc-9\">\u5176\u4ed6\uff082\u4e2a\uff09<\/h3>\n<p><strong>enum  \u679a\u4e3e\uff08\u5217\u4e3e\u578b\u522b\uff09<br \/>\nassert  \u65ad\u8a00\uff08\u7528\u6765\u8fdb\u884c\u7a0b\u5e8f\u8c03\u8bd5\uff09<\/strong><\/p>\n<h3 id=\"toc-10\">\u4fdd\u7559\u5b57\uff082\u4e2a\uff09<\/h3>\n<p><strong>const  \u4fdd\u7559\u5173\u952e\u5b57\uff0c\u6ca1\u6709\u5177\u4f53\u542b\u4e49<br \/>\ngoto  \u4fdd\u7559\u5173\u952e\u5b57\uff0c\u6ca1\u6709\u5177\u4f53\u542b\u4e49<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u952e\u5b57 Java\u5173\u952e\u5b57\u662f\u6709\u7279\u522b\u610f\u4e49\u7684\u6807\u8bc6\u7b26\u3002\u7528\u6765\u8868\u793a\u4e00\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u6216\u8005\u8868\u793a\u7a0b\u5e8f\u7684\u7ed3\u6784\u7b49\u3002 Java\u5173\u952e\u5b57\u4e0d\u80fd\u7528 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"_links":{"self":[{"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/posts\/185"}],"collection":[{"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ericw.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=185"}],"version-history":[{"count":1,"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions"}],"predecessor-version":[{"id":186,"href":"http:\/\/ericw.top\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions\/186"}],"wp:attachment":[{"href":"http:\/\/ericw.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ericw.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=185"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ericw.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}