1 /* 2 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 package java.util.logging; 28 29 import java.io.*; 30 import java.text.*; 31 import java.util.Date; 32 33 /** 34 * Print a brief summary of the LogRecord in a human readable 35 * format. The summary will typically be 1 or 2 lines. 36 * 37 * @since 1.4 38 */ 39 40 public class SimpleFormatter extends Formatter { 41 42 Date dat = new Date(); 43 private final static String format = "{0,date} {0,time}"; 44 private MessageFormat formatter; 45 46 private Object args[] = new Object[1]; 47 48 // Line separator string. This is the value of the line.separator 49 // property at the moment that the SimpleFormatter was created. 50 private String lineSeparator = java.security.AccessController.doPrivileged( 51 new sun.security.action.GetPropertyAction("line.separator")); 52 53 /** 54 * Format the given LogRecord. 55 * <p> 56 * This method can be overridden in a subclass. 57 * It is recommended to use the {@link Formatter#formatMessage} 58 * convenience method to localize and format the message field. 59 * 60 * @param record the log record to be formatted. 61 * @return a formatted log record 62 */ 63 public synchronized String format(LogRecord record) { 64 StringBuffer sb = new StringBuffer(); 65 // Minimize memory allocations here. 66 dat.setTime(record.getMillis()); 67 args[0] = dat; 68 StringBuffer text = new StringBuffer(); 69 if (formatter == null) { 70 formatter = new MessageFormat(format); 71 } 72 formatter.format(args, text, null); 73 sb.append(text); 74 sb.append(" "); 75 if (record.getSourceClassName() != null) { 76 sb.append(record.getSourceClassName()); 77 } else { 78 sb.append(record.getLoggerName()); 79 } 80 if (record.getSourceMethodName() != null) { 81 sb.append(" "); 82 sb.append(record.getSourceMethodName()); 83 } 84 sb.append(lineSeparator); 85 String message = formatMessage(record); 86 sb.append(record.getLevel().getLocalizedName()); 87 sb.append(": "); 88 sb.append(message); 89 sb.append(lineSeparator); 90 if (record.getThrown() != null) { 91 try { 92 StringWriter sw = new StringWriter(); 93 PrintWriter pw = new PrintWriter(sw); 94 record.getThrown().printStackTrace(pw); 95 pw.close(); 96 sb.append(sw.toString()); 97 } catch (Exception ex) { 98 } 99 } 100 return sb.toString(); 101 } 102 }