How to write custom Log handler : Log « Language Basics « Java

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How to write custom Log handler

    
// : c15:CustomHandler.java
//How to write custom handler
//From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
//www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;

public class CustomHandler {

  private static Logger logger = Logger.getLogger("CustomHandler");

  private static List strHolder = new ArrayList();

  public static void main(String[] args) {
    logger.addHandler(new Handler() {
      public void publish(LogRecord logRecord) {
        strHolder.add(logRecord.getLevel() + ":");
        strHolder.add(logRecord.getSourceClassName() + ":");
        strHolder.add(logRecord.getSourceMethodName() + ":");
        strHolder.add("<" + logRecord.getMessage() + ">");
        strHolder.add("\n");
      }

      public void flush() {
      }

      public void close() {
      }
    });
    logger.warning("Logging Warning");
    logger.info("Logging Info");
    System.out.print(strHolder);
  }
} ///:~



           
         
    
    
    
  

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