Can I catch multiple Java exceptions in the same catch clause

Question

In Java  I want to do something like this   try                  catch     code to catch IllegalArgumentException  SecurityException               IllegalAccessException  and NoSuchFieldException at the same time          someCode           instead of   try                  catch  IllegalArgumentException e        someCode      catch  SecurityException e        someCode      catch  IllegalAccessException e        someCode      catch  NoSuchFieldException e        someCode        Is there any way to do this

User · Answer

It is very simple  try         Your code here    catch  IllegalArgumentException   SecurityException   IllegalAccessException               NoSuchFieldException e          Handle exception here

User · Answer

No  one per customer prior to Java 7  You can catch a superclass  like java lang Exception  as long as you take the same action in all cases  try          some code   catch Exception e      All exceptions are caught here as all are inheriting java lang Exception     e printStackTrace       But that might not be the best practice   You should only catch an exception when you have a strategy for actually handling it - and logging and rethrowing is not  quot handling it quot    If you don t have a corrective action  better to add it to the method signature and let it bubble up to someone that can handle the situation

User · Answer

Yes  Here s the way using pipe      separator   try                     catch       catch IllegalArgumentException   SecurityException   IllegalAccessException   NoSuchFieldException e

User · Answer

A cleaner  but less verbose  and perhaps not as preferred  alternative to user454322 s answer on Java 6  i e   Android  would be to catch all Exceptions and re-throw RuntimeExceptions  This wouldn t work if you re planning on catching other types of exceptions further up the stack  unless you also re-throw them   but will effectively catch all checked exceptions   For instance   try          CODE THAT THROWS EXCEPTION   catch  Exception e        if  e instanceof RuntimeException               this exception was not expected  so re-throw it         throw e        else              YOUR CODE FOR ALL CHECKED EXCEPTIONS            That being said  for verbosity  it might be best to set a boolean or some other variable and based on that execute some code after the try-catch block

User · Answer

If there is a hierarchy of exceptions you can use the base class to catch all subclasses of exceptions  In the degenerate case you can catch all Java exceptions with   try            catch  Exception e       someCode        In a more common case if RepositoryException is the the base class and PathNotFoundException is a derived class then   try            catch  RepositoryException re       someCode      catch  Exception e       someCode        The above code will catch RepositoryException and PathNotFoundException for one kind of exception handling and all other exceptions are lumped together  Since Java 7  as per  OscarRyz s answer above   try            catch  IOException   SQLException ex

User · Answer

Catch the exception that happens to be a parent class in the exception hierarchy  This is of course  bad practice  In your case  the common parent exception happens to be the Exception class  and catching any exception that is an instance of Exception  is indeed bad practice - exceptions like NullPointerException are usually programming errors and should usually be resolved by checking for null values

User · Answer

For kotlin  it s not possible for now but they ve considered to add it  Source But for now  just a little trick   try          code   catch ex Exception        when ex            is SomeException          is AnotherException - gt                   handle                   else - gt  throw ex

User · Answer

Within Java 7 you can define multiple catch clauses like   catch  IllegalArgumentException   SecurityException e

User · Answer

In pre-7 how about     Boolean   caught   true    Exception e    try                 caught   false      catch  TransformerException te         e   te      catch  SocketException se         e   se      catch  IOException ie         e   ie        if  caught         someCode       You can reference Exception e here

User · Answer

This has been possible since Java 7  The syntax for a multi-catch block is  try            catch  IllegalArgumentException   SecurityException   IllegalAccessException               NoSuchFieldException e       someCode       Remember  though  that if all the exceptions belong to the same class hierarchy  you can simply catch that base exception type  Also note that you cannot catch both ExceptionA and ExceptionB in the same block if ExceptionB is inherited  either directly or indirectly  from ExceptionA  The compiler will complain  Alternatives in a multi-catch statement cannot be related by subclassing   Alternative ExceptionB is a subclass of alternative ExceptionA  The fix for this is to only include the ancestor exception in the exception list  as it will also catch exceptions of the descendant type

User · Answer

Not exactly before Java 7 but  I would do something like this    Java 6 and before  try               catch  Exception exc      if  exc instanceof IllegalArgumentException    exc instanceof SecurityException          exc instanceof IllegalAccessException    exc instanceof NoSuchFieldException           someCode         else if  exc instanceof RuntimeException         throw  RuntimeException  exc            else       throw new RuntimeException exc             Java 7  try               catch   IllegalArgumentException   SecurityException            IllegalAccessException  NoSuchFieldException exc      someCode

[java] Can I catch multiple Java exceptions in the same catch clause?

Examples related to java

Examples related to exception

Examples related to try-catch

Examples related to multi-catch