Here you can find the source of getLoggerLevel(Logger logger)
public static int getLoggerLevel(Logger logger)
//package com.java2s; /*//from w ww . jav a 2 s .c o m * Copyright 2014 NAVER Corp. * * 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 org.slf4j.Logger; import org.slf4j.spi.LocationAwareLogger; public class Main { public static final int TRACE_LEVEL = LocationAwareLogger.TRACE_INT; public static final int DEBUG_LEVEL = LocationAwareLogger.DEBUG_INT; public static final int INFO_LEVEL = LocationAwareLogger.INFO_INT; public static final int WARN_LEVEL = LocationAwareLogger.WARN_INT; public static final int ERROR_LEVEL = LocationAwareLogger.ERROR_INT; public static final int DISABLE_LEVEL = LocationAwareLogger.ERROR_INT + 10; public static int getLoggerLevel(Logger logger) { if (logger == null) { throw new NullPointerException("logger must not be null"); } if (logger.isTraceEnabled()) { return TRACE_LEVEL; } if (logger.isDebugEnabled()) { return DEBUG_LEVEL; } if (logger.isInfoEnabled()) { return INFO_LEVEL; } if (logger.isWarnEnabled()) { return WARN_LEVEL; } if (logger.isErrorEnabled()) { return ERROR_LEVEL; } return DISABLE_LEVEL; } }