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1   /*
2    * Copyright (c) 2003, 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  package java.util;
27  
28  /**
29   * Unchecked exception thrown when duplicate flags are provided in the format
30   * specifier.
31   *
32   * <p> Unless otherwise specified, passing a <tt>null</tt> argument to any
33   * method or constructor in this class will cause a {@link
34   * NullPointerException} to be thrown.
35   *
36   * @since 1.5
37   */
38  public class DuplicateFormatFlagsException extends IllegalFormatException {
39  
40      private static final long serialVersionUID = 18890531L;
41  
42      private String flags;
43  
44      /**
45       * Constructs an instance of this class with the specified flags.
46       *
47       * @param  f
48       *         The set of format flags which contain a duplicate flag.
49       */
50      public DuplicateFormatFlagsException(String f) {
51          if (f == null)
52              throw new NullPointerException();
53          this.flags = f;
54      }
55  
56      /**
57       * Returns the set of flags which contains a duplicate flag.
58       *
59       * @return  The flags
60       */
61      public String getFlags() {
62          return flags;
63      }
64  
65      public String getMessage() {
66          return String.format("Flags = '%s'", flags);
67      }
68  }