{"id":2009,"date":"2011-04-15T10:57:59","date_gmt":"2011-04-15T05:27:59","guid":{"rendered":"http:\/\/JitendraZaa.com\/blog\/?p=2009"},"modified":"2011-04-15T10:57:59","modified_gmt":"2011-04-15T05:27:59","slug":"exception-and-error-handling-framework-in-java","status":"publish","type":"post","link":"https:\/\/www.jitendrazaa.com\/blog\/java\/exception-and-error-handling-framework-in-java\/","title":{"rendered":"Exception and Error handling framework in Java"},"content":{"rendered":"

In Java, the base class of all the Exceptions are “java.lang.Throwable<\/a>“. This class has two subclasses – “Error<\/a>” and “Exception<\/a>“.<\/p>\n

\"JAVA<\/a>
JAVA Exception Framework<\/figcaption><\/figure>\n

java.lang.Error<\/strong> indicates serious problems that a reasonable application should not try to catch<\/strong>. Most such errors are abnormal conditions.
\nExamples : java.lang.ThreadDeath<\/a> and java.lang.VirtualMachineError<\/a><\/p>\n

\ntry {\n\t\t\tthrow new Error("This is the error");\n\t\t} catch (Error e) {\n\t\t\te.printStackTrace();\n\t\t}\n\t\t\/\/ OR\n\t\ttry {\n\t\t\tthrow new Error("This is the error");\n\t\t} catch (Throwable e) {\n\t\t\te.printStackTrace();\n\t\t}\n<\/pre>\n
\n
java.lang.Exception :<\/strong>
\nThe class “Exception” and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.<\/p>\n
All the subclasses of Exception forms the “Checked Exception<\/strong><\/a>” which must be caught by catch block<\/strong>.<\/p>\n
Example : ClassNotFoundException<\/a>, IOException<\/a><\/p>\n
\n
java.lang.RuntimeException: <\/strong>
\nThis is the subclass of the Exception class. All the classes which extends this class are known as “UnChecked Exception<\/strong><\/a>“. This type of exception shows that there is some logical error in program.Unlike checked exception, it is not necessary to surround the code with try-catch block.
\nExample : ArithmeticException <\/a>, NullPointerException<\/a><\/p>\n
\n
Question : Although all exceptions must be caught in catch block, then what is the need of checked and unchecked exception ? Why not all the exceptions are unchecked ?<\/strong>
\nAnswer : How the programmer will come to know that which type of exception occur in API ? Hard way is when it occurs at run time and easy way is “when compiler complains that Exception is not handled properly”. It is very easy to handle the exception if API shows types of possible exception thrown (Checked Exception). it will make the programers life very easy.<\/p>\n
Next Read – Read Exception chaining <\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Explain the concept of Exception and Error handling framework in JAVA.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"jz_research_post":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[329],"class_list":["post-2009","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1820,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/java-threading-executor-framework-and-callable-interface\/","url_meta":{"origin":2009,"position":0},"title":"Java Threading – Executor Framework and Callable Interface","author":"Jitendra","date":"March 24, 2011","format":false,"excerpt":"Java Threading - Executor Framework and Callable Interface with example","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2267,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/ccb-error-resolve-unable-to-move-value-into-property\/","url_meta":{"origin":2009,"position":1},"title":"CC&B error Resolve – Unable to move value into property","author":"Jitendra","date":"June 21, 2011","format":false,"excerpt":"How to resolve the error \"Unable to move value into property\" in Customer care and Billing (CC&B) \/ Oracle revenue management and billing System (ORMB) \/ Oracle Utilities","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":738,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/checked-unchecked-exception\/","url_meta":{"origin":2009,"position":2},"title":"Checked and Unchecked Exception","author":"Jitendra","date":"August 7, 2010","format":false,"excerpt":"Explains the concept of checked exception and unchecked exception in JAVA.","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1638,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/exception-chaining\/","url_meta":{"origin":2009,"position":3},"title":"Exception chaining in Java","author":"Jitendra","date":"March 14, 2011","format":false,"excerpt":"Concept of Exception chaining with example in JAVA","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"Exception Chaining","src":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2011\/03\/Exception-Chaining.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1951,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/project-coin-java-7-new-features\/","url_meta":{"origin":2009,"position":4},"title":"Project Coin – Java 7 new features","author":"Jitendra","date":"April 11, 2011","format":false,"excerpt":"What is Project Coin and how it is related to JAVA","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2783,"url":"https:\/\/www.jitendrazaa.com\/blog\/salesforce\/dynamic-approval-process-based-on-the-apex-and-trigger\/","url_meta":{"origin":2009,"position":5},"title":"Dynamic Approval Process in Salesforce using Apex and Trigger","author":"Jitendra","date":"March 27, 2012","format":false,"excerpt":"This article explain the Automatic submission of Approval process using Apex and trigger. It include Automatic submission, approval as well as rejection of record completely using Apex and trigger.","rel":"","context":"In "Apex"","block_context":{"text":"Apex","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/salesforce\/apex\/"},"img":{"alt_text":"Approval Process Steps","src":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2012\/03\/Approval-Process-Steps.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2012\/03\/Approval-Process-Steps.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2012\/03\/Approval-Process-Steps.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/posts\/2009","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/comments?post=2009"}],"version-history":[{"count":0,"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/posts\/2009\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/media?parent=2009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/categories?post=2009"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jitendrazaa.com\/blog\/wp-json\/wp\/v2\/tags?post=2009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}