{"id":941,"date":"2017-03-16T15:03:08","date_gmt":"2017-03-16T07:03:08","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=941"},"modified":"2017-03-17T13:12:03","modified_gmt":"2017-03-17T05:12:03","slug":"java%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86%e4%b9%8bexception%e7%9a%84%e5%9f%ba%e6%9c%ac%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/analysis\/2017\/03\/16\/150308941.html","title":{"rendered":"Java\u57fa\u7840\u77e5\u8bc6\u4e4b\u5f02\u5e38\u5904\u7406Exception\u7684\u57fa\u672c\u4f7f\u7528"},"content":{"rendered":"<p>1\u3001\u8bbe\u8ba1\u4e00\u4e2aPerson\u7c7b\uff0c\u8be5\u7c7b\u5305\u542b\u4e00\u4e2aage\u5c5e\u6027\uff0c\u5373\u4eba\u7684\u5e74\u9f84\uff0c\u8be5\u503c\u4e0d\u80fd\u4e3a\u8d1f\u6570\uff1b<br \/>\n2\u3001\u5728\u7ed9\u8be5\u5bf9\u8c61\u5c5e\u6027\u8d4b\u503c\u4e3a\u8d1f\u6570\u65f6\uff0c\u629b\u51fa\u5f02\u5e38\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0\uff1b<br \/>\n2.1\u3001\u5728Person\u5bf9\u8c61\u7684setAge\u65b9\u6cd5\u4e2d\u5c06\u5f02\u5e38\u8fdb\u884c\u629b\u51fa\uff0cuncheked\u65b9\u5f0f\uff0c\u80fd\u6b63\u5e38\u7f16\u8bd1\u901a\u8fc7\uff0c\u8fd0\u884c\u65f6\u62a5\u9519\uff1b<\/p>\n<pre line=\"1\" lang=\"java\">public class Person{\n\tprivate int age;\n\tpublic void setAge(int age){\n\t\tif (age < 0){\n\t\t\tthrow new RuntimeException(\"\u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570...\");\n\t\t}\n\t\tthis.age = age;\n\t}\n}\nclass Demo{\n\tpublic static void main(String args[]){\n\t\tPerson p = new Person();\n\t\tp.setAge(-1);\n\t}\n}\n\u8fd0\u884c\u7ed3\u679c\uff1a\nException in thread \"main\" java.lang.RuntimeException: \u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570...\n\tat Person.setAge(Person.java:5)\n\tat Demo.main(Demo.java:4)\n<\/pre>\n<p><!--more--><br \/>\n2.2\u3001\u5728\u8be5\u5c5e\u6027\u7684set\u65b9\u6cd5\u4e2d\u8fdb\u884c\u5f02\u5e38\u7533\u660e\uff0c\u8ba9\u8c03\u7528\u8005\u8fdb\u884c\u5f02\u5e38\u5904\u7406\uff0cchecked\u65b9\u5f0f\uff0c\u6ca1\u6709\u5f02\u5e38\u5904\u7406\u4f1a\u5728\u7a0b\u5e8f\u7f16\u8bd1\u65f6\u62a5\u9519\uff1b<\/p>\n<pre line=\"1\" lang=\"java\">public class Person{\n\tprivate int age;\n\tpublic void setAge(int age) throws Exception{\n\t\tif (age < 0){\n\t\t\tthrow new Exception(\"\u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570...\");\n\t\t}else{\n\t\t\tthis.age = age;\n\t\t}\n\t}\n}\nclass Demo{\n\tpublic static void main(String args[]){\n\t\tPerson p = new Person();\n\t\ttry{\n\t\t\tp.setAge(-1);\n\t\t}catch(Exception e){\n\t\t\te.printStackTrace();\n\t\t}\n\t}\n}\n\u8fd0\u884c\u7ed3\u679c\uff1a\njava.lang.Exception: \u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570...\n\tat Person.setAge(Person.java:5)\n\tat Demo.main(Demo.java:5)<\/pre>\n<p>3\u3001<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u8bbe\u8ba1\u4e00\u4e2aPerson\u7c7b\uff0c\u8be5\u7c7b\u5305\u542b\u4e00\u4e2aage\u5c5e\u6027\uff0c\u5373\u4eba\u7684\u5e74\u9f84\uff0c\u8be5\u503c\u4e0d\u80fd\u4e3a\u8d1f\u6570\uff1b 2\u3001\u5728\u7ed9\u8be5\u5bf9\u8c61\u5c5e\u6027\u8d4b\u503c\u4e3a\u8d1f\u6570\u65f6\uff0c\u629b\u51fa\u5f02\u5e38\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0\uff1b 2.1\u3001\u5728Person\u5bf9\u8c61\u7684setAge\u65b9\u6cd5\u4e2d\u5c06\u5f02\u5e38\u8fdb\u884c\u629b\u51fa\uff0cuncheked\u65b9\u5f0f\uff0c\u80fd\u6b63\u5e38\u7f16\u8bd1\u901a\u8fc7\uff0c\u8fd0\u884c\u65f6\u62a5\u9519\uff1b public class Person{ private int age; public void setAge(int age){ if (age < 0){ throw new RuntimeException(\"\u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570...\"); } this.age = age; } } class Demo{ public static void main(String args[]){ Person p = new Person(); p.setAge(-1); } } \u8fd0\u884c\u7ed3\u679c\uff1a Exception in thread \"main\" java.lang.RuntimeException: \u5e74\u9f84\u4e0d\u80fd\u4e3a\u8d1f\u6570... at Person.setAge(Person.java:5) at Demo.main(Demo.java:4)\n<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35,10],"tags":[34,20],"class_list":["post-941","post","type-post","status-publish","format-standard","hentry","category-java","category-analysis","tag-java","tag-basics"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=941"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/941\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}