OnJava8-Examples/exceptions/LoggingExceptions.java

// exceptions/LoggingExceptions.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// An exception that reports through a Logger
// {ErrorOutputExpected}
import java.util.logging.*;
import java.io.*;

class LoggingException extends Exception {
  private static Logger logger =
    Logger.getLogger("LoggingException");
  public LoggingException() {
    StringWriter trace = new StringWriter();
    printStackTrace(new PrintWriter(trace));
    logger.severe(trace.toString());
  }
}

public class LoggingExceptions {
  public static void main(String[] args) {
    try {
      throw new LoggingException();
    } catch(LoggingException e) {
      System.err.println("Caught " + e);
    }
    try {
      throw new LoggingException();
    } catch(LoggingException e) {
      System.err.println("Caught " + e);
    }
  }
}
/* Output:
___[ Error Output ]___
Jul 27, 2016 10:50:30 AM LoggingException <init>
SEVERE: LoggingException
        at
LoggingExceptions.main(LoggingExceptions.java:20)

Caught LoggingException
Jul 27, 2016 10:50:30 AM LoggingException <init>
SEVERE: LoggingException
        at
LoggingExceptions.main(LoggingExceptions.java:25)

Caught LoggingException
*/