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 {@code null} 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 }