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     @java.io.Serial
  41     private static final long serialVersionUID = 18890531L;
  42 
  43     private String flags;
  44 
  45     /**
  46      * Constructs an instance of this class with the specified flags.
  47      *
  48      * @param  f
  49      *         The set of format flags which contain a duplicate flag.
  50      */
  51     public DuplicateFormatFlagsException(String f) {
  52         if (f == null)
  53             throw new NullPointerException();
  54         this.flags = f;
  55     }
  56 
  57     /**
  58      * Returns the set of flags which contains a duplicate flag.
  59      *
  60      * @return  The flags
  61      */
  62     public String getFlags() {
  63         return flags;
  64     }
  65 
  66     public String getMessage() {
  67         return String.format("Flags = '%s'", flags);
  68     }
  69 }