1 /*
2 * Copyright 2000-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any 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 }
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