how to print an exception using logger

Question

I have a situation in which I want to print all the exception caught in catch block using logger    try           File file   new File  C   className   mkdir            fh   new FileHandler  C   className  className log            logger addHandler fh           logger setUseParentHandlers false           SimpleFormatter formatter   new SimpleFormatter            fh setFormatter formatter         catch  Exception e            logger info e           i got the error logger cannot be applied to java io Exception     My concern is if I do so many thing in try block and I keep only one catch block as catch Exception e   Then is there any way using logger that print any kind of exception caught in catch block    Note  we are using java util logging Logger API

User · Answer

Try to log the stack trace like below   logger error  Exception        e

User · Answer

You should probably clarify which logger are you using   org apache commons logging Log interface has method void error Object message  Throwable t   and method void info Object message  Throwable t    which logs the stack trace together with your custom message  Log4J implementation has this method too   So  probably you need to write   logger error  BOOM    e     If you need to log it with INFO level  though  it might be a strange use case   then   logger info  Just a stack trace  nothing to worry about   e     Hope it helps

User · Answer

Use  LOGGER log Level INFO   Got an exception    e    or  LOGGER info  Got an exception      e getMessage

User · Answer

You can use this method to log the exception stack to String   public String stackTraceToString Throwable e        StringBuilder sb   new StringBuilder        for  StackTraceElement element   e getStackTrace              sb append element toString             sb append   n              return sb toString

[java] how to print an exception using logger?

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