Define your own Custom Formatter : Log Formatter « Log « Java Tutorial

1. Java Tutorial
2. Log
3. Log Formatter

import java.util.logging.Formatter;
import java.util.logging.LogRecord;

public class CustomFormatter extends Formatter {
  public synchronized String format(LogRecord record) {
    String methodName = record.getSourceMethodName();
    String message = record.getMessage();
    StringBuffer buffer = new StringBuffer(50);
    buffer.append(methodName);
    buffer.append("=");
    buffer.append(message);
    return buffer.toString();
  }
}