Here you can find the source of createFormatter()
static Formatter createFormatter()
//package com.java2s; /*/* ww w. ja va 2 s.c o m*/ * Copyright 2013-2014 Odysseus Software GmbH * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.text.MessageFormat; import java.util.Date; import java.util.logging.Formatter; import java.util.logging.LogRecord; public class Main { static Formatter createFormatter() { return new Formatter() { final MessageFormat messageFormat = new MessageFormat("{0}{1,date,HH:mm:ss} {2} - {3}{4}\n"); @Override public synchronized String format(LogRecord record) { Object[] arguments = new Object[] { String.format("%-8s", record.getLevel()), new Date(record.getMillis()), record.getLoggerName() == null ? "<Unknown Logger>" : record.getLoggerName().substring(record.getLoggerName().lastIndexOf('.') + 1), record.getMessage() == null ? "<No Message>" : record.getMessage(), record.getThrown() == null ? "" : ", " + record.getThrown() }; return messageFormat.format(arguments); } }; } }