Java tutorial
/* * Copyright 2000-2018 Vaadin Ltd. * * 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. */ package com.vaadin.client; import java.util.logging.Level; import java.util.logging.Logger; import com.google.gwt.logging.client.LogConfiguration; import com.vaadin.client.debug.internal.VDebugWindow; /** * A helper class to do some client side logging. * * @deprecated as of 7.1, use {@link Logger} from java.util.logging instead. */ @Deprecated public class VConsole { private static VDebugWindow impl; /** * Used by ApplicationConfiguration to initialize VConsole. * * @param console */ static void setImplementation(VDebugWindow console) { impl = console; } public static void log(String msg) { if (LogConfiguration.loggingIsEnabled(Level.INFO)) { // Check for null, so no NullPointerException is generated when // formatting (#12588) getLogger().log(Level.INFO, msg == null ? "null" : msg); } } public static void log(Throwable e) { if (LogConfiguration.loggingIsEnabled(Level.INFO)) { // Check for null, so no NullPointerException is generated when // formatting (#12588) getLogger().log(Level.INFO, e.getMessage() == null ? "" : e.getMessage(), e); } } public static void error(Throwable e) { if (LogConfiguration.loggingIsEnabled(Level.SEVERE)) { // Check for null, so no NullPointerException is generated when // formatting (#12588) getLogger().log(Level.SEVERE, e.getMessage() == null ? "" : e.getMessage(), e); } } public static void error(String msg) { if (LogConfiguration.loggingIsEnabled(Level.SEVERE)) { // Check for null, so no NullPointerException is generated when // formatting (#12588) getLogger().log(Level.SEVERE, msg == null ? "null" : msg); } } public static void printObject(Object msg) { String str; if (msg == null) { str = "null"; } else { str = msg.toString(); } log(str); } public static void dirUIDL(ValueMap u, ApplicationConnection client) { if (impl != null) { impl.uidl(client, u); } } public static void printLayoutProblems(ValueMap meta, ApplicationConnection applicationConnection) { if (impl != null) { impl.meta(applicationConnection, meta); } } private static Logger getLogger() { return Logger.getLogger(VConsole.class.getName()); } }