{"id":697,"date":"2021-02-09T16:59:06","date_gmt":"2021-02-09T08:59:06","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=697"},"modified":"2021-02-09T20:21:20","modified_gmt":"2021-02-09T12:21:20","slug":"try-catch-%e6%8d%95%e8%8e%b7%e5%bc%82%e5%b8%b8","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-697.html","title":{"rendered":"try &#8212; catch \u6355\u83b7\u5f02\u5e38"},"content":{"rendered":"\n<p>\u6355\u83b7\u5f02\u5e38\uff0c\u662f\u5904\u7406\u5f02\u5e38\u7684\u7b2c\u4e8c\u79cd\u65b9\u5f0f<\/p>\n\n\n\n<p>\u901a\u5e38\u4f7f\u7528 try &#8212; catch \u8bed\u53e5\u6355\u83b7\u5f02\u5e38<\/p>\n\n\n\n<h5>1.try &#8212; catch \u8bed\u6cd5<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>try{\n  \/\/\u53ef\u80fd\u4ea7\u751f\u5f02\u5e38\u7684\u8bed\u53e5;\n}catch(\u5f02\u5e38\u5bf9\u8c61){\n  \/\/\u5904\u7406\u5f02\u5e38\u5bf9\u8c61\u7684\u8bed\u53e5\n}catch(\u5f02\u5e38\u5bf9\u8c612){\n  \/\/\u5904\u7406\u5f02\u5e38\u5bf9\u8c612\u7684\u8bed\u53e5\n}...<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\u4e8b\u9879<\/p>\n\n\n\n<ul><li>try \u4e2d\u53ef\u80fd\u629b\u51fa\u591a\u4e2a\u5f02\u5e38\u5bf9\u8c61<\/li><li>catch \u4e2d\u53ef\u4ee5\u6355\u83b7\u4e00\u4e2a\u5f02\u5e38\u5bf9\u8c61\uff0c\u53ef\u4ee5\u591a\u6b21 catch \u6355\u83b7\u8fd9\u4e9b\u5bf9\u8c61<\/li><li>\u4e00\u65e6\u4ea7\u751f\u4e86\u5f02\u5e38\u5bf9\u8c61\uff0c\u5c31\u4f1a\u6267\u884c catch \u4e2d\u7684\u8bed\u53e5\uff0c\u53cd\u4e4b\u4e0d\u6267\u884c<\/li><\/ul>\n\n\n\n<h5>2.\u4f8b\u5b50<\/h5>\n\n\n\n<p>check \u65b9\u6cd5\u4e2d\u6355\u83b7\u4e86\u4e00\u4e2a IOException\uff0c\u540c\u65f6\u629b\u51fa\u4e86\u4e00\u4e2aFileNotFoundException<\/p>\n\n\n\n<p>\u5728 main \u4e2d\u6355\u83b7\u4e86 FileNotFoundException \uff0c<\/p>\n\n\n\n<p>\u5bf9\u4e8e 2 \u4e2a\u5f02\u5e38\u7684\u5904\u7406\uff0c\u90fd\u662f\u6253\u5370\u9519\u8bef\u4fe1\u606f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public static void main(String&#91;] args) {\n    try {\n\t\tcheck(\"c:\\\\a.txt\");\n\t} catch (FileNotFoundException e) {\n\t\te.printStackTrace();\n\t}\n}\npublic static void check(String fileName) throws FileNotFoundException  {\n\tif(fileName.equals(\"d:\\\\a.txt\")) {\n\t\tthrow new FileNotFoundException();\n\t}\n\tFile f = new File(fileName);\n\ttry {\n\t\tf.createNewFile();\n\t} catch (IOException e) {\n\t\te.printStackTrace();\n\t}\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6355\u83b7\u5f02\u5e38\uff0c\u662f\u5904\u7406\u5f02\u5e38\u7684\u7b2c\u4e8c\u79cd\u65b9\u5f0f \u901a\u5e38\u4f7f\u7528 try &#8212; catch \u8bed\u53e5\u6355\u83b7\u5f02\u5e38 1.try &#038;#&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-697.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">try &#8212; catch \u6355\u83b7\u5f02\u5e38<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/697"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=697"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/697\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}