1 package com.exceptions;
 2
 3 import java.io.*;
 4 import java.util.logging.Logger;
 5
 6 class LoggingException extends Exception{
 7     private static Logger logger =
 8             Logger.getLogger("LoggeringException");
 9     public LoggingException(){
10         StringWriter trace = new StringWriter();
11         printStackTrace(new PrintWriter(trace));
12         logger.severe(trace.toString());
13     }
14 }
15
16 public class LoggingExceptions {
17     public static void main(String [] args)
18     {
19         try{
20             throw new LoggingException();
21         }catch(LoggingException e){
22             System.err.println("Caught"+ e);
23         }
24         try{
25             throw new LoggingException();
26         }catch(LoggingException e){
27             System.out.println("Caught"+ e);
28         }
29     }
30 }

 1 六月 22, 2014 9:32:41 下午 com.exceptions.LoggingException <init>
 2 严重: com.exceptions.LoggingException
 3     at com.exceptions.LoggingExceptions.main(LoggingExceptions.java:20)
 4
 5 Caughtcom.exceptions.LoggingException
 6 六月 22, 2014 9:32:41 下午 com.exceptions.LoggingException <init>
 7 严重: com.exceptions.LoggingException
 8     at com.exceptions.LoggingExceptions.main(LoggingExceptions.java:25)
 9
10 Caughtcom.exceptions.LoggingException

 1 /**
 2  *
 3  */
 4 package com.exceptions;
 5
 6 import java.util.logging.Logger;
 7 import java.io.*;
 8
 9 public class LoggingExceptions2 {
10
11     /**
12      * @param args
13      */
14     private static Logger logger =
15             Logger.getLogger("LoggingExceptions");
16     static void logException(Exception e){
17         StringWriter trace = new StringWriter();
18         e.printStackTrace(new PrintWriter(trace));
19         logger.severe(trace.toString());
20     }
21     public static void main(String[] args) {
22         // TODO Auto-generated method stub
23         try{
24             throw new NullPointerException();
25         }catch(NullPointerException e){
26             logException(e);
27         }
28     }
29
30 }