I want to rethrow an exception, is that possible?

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Chetan Santha

Professional Tutor with 15 years of experience.

yes we can
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yes.We can rethrow an exception.try { // code here that throws an Exception } catch (Throwable t) { throw t; // (re)throw it in their face } Example: //Rethrowing.java // Demonstrating fillInStackTrace() public class Rethrowing { public static void first() throws Exception { System.out.println("originating...
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yes.We can rethrow an exception.try { // code here that throws an Exception } catch (Throwable t) { throw t; // (re)throw it in their face } Example: //Rethrowing.java // Demonstrating fillInStackTrace() public class Rethrowing { public static void first() throws Exception { System.out.println("originating the exception in first()"); throw new Exception("thrown from first()"); } public static void getexception() throws Throwable { try { first(); } catch(Exception e) { System.out.println( "Inside getexception (), e.printStackTrace()"); e.printStackTrace(); throw e; // 17 // throw e.fillInStackTrace(); // 18 } } public static void main(String[] args) throws Throwable { try { getexception (); } catch(Exception e) { System.out.println( "Caught in main, e.printStackTrace()"); e.printStackTrace(); } } } ///:~ The important line numbers are marked inside of comments. With line 17 un-commented (as shown), the output is: originating the exception in f() Inside getexception (), e.printStackTrace() java.lang.Exception: thrown from f() at Rethrowing.first(Rethrowing.java:8) at Rethrowing. getexception (Rethrowing.java:12) at Rethrowing.main(Rethrowing.java:24) Caught in main, e.printStackTrace() java.lang.Exception: thrown from f() at Rethrowing.first(Rethrowing.java:8) at Rethrowing. getexception (Rethrowing.java:12) at Rethrowing.main(Rethrowing.java:24) So the exception stack trace always remembers its true point of origin, no matter how many times it gets rethrown. With line 17 commented and line 18 un-commented, fillInStackTrace( ) is used instead, and the result is: originating the exception in f() Inside getexception (), e.printStackTrace() java.lang.Exception: thrown from first() at Rethrowing.first(Rethrowing.java:8) • at Rethrowing. getexception (Rethrowing.java:12) • at Rethrowing.main(Rethrowing.java:24) read less
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A software veteran with more than decade of experience

yes...you can use catch(Exception ex) { {some logic} throw ex; }
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Software Development Trainer

What do you mean by rethrow? Are you trying to ask if one can raise the exception again once it's handled in catch? If yes, then yeah we can. We need to use throw keyword. Something like this try{ //code } catch (exception ex) { //log the exception or do whatever you want. throw...
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What do you mean by rethrow? Are you trying to ask if one can raise the exception again once it's handled in catch? If yes, then yeah we can. We need to use throw keyword. Something like this try{ //code } catch (exception ex) { //log the exception or do whatever you want. throw ex;//rethrow exception } read less
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If you develop your own library which makes use of a third-party library that throws an exception. Now there are two options for us: 1. don't catch it (not a better option) 2. catch it and log it somewhere, then rethrow it By rethrowing, we propgate this exception to the caller (client) of your...
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If you develop your own library which makes use of a third-party library that throws an exception. Now there are two options for us: 1. don't catch it (not a better option) 2. catch it and log it somewhere, then rethrow it By rethrowing, we propgate this exception to the caller (client) of your library and request it to catch the excpetion. This way your delegating the responsibility of handling this excpetion to the caller of our library read less
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Java Web Application Development and Aptitude Trainer

yes you can.
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Java Tutor

yes...you can using catch block with appropriate Exception argument
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Talent with Professional Experience

Yes you can rethrow an exception by throwing an exception inside catch block provided we are able to catch the Exception properly. If we are not sure what kind of Exception is caught; in that case we can catch the super Excepiton class incatch block and then throw any other exception
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Java Technical Leader

try { } catch(Exception ex) { }
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Java Technical Leader

try { // code here } catch(Exception ex) { throw ex; } but this is not advisable hust catch the same exception and re-throw it. If you want to make your application specific message then you can try this.
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