Source for java.lang.AssertionError

   1: /* AssertionError.java -- indication of a failed assertion
   2:    Copyright (C) 2002, 2005  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.lang;
  40: 
  41: /**
  42:  * An assertion error normally occurs as a result of the <code>assert</code>
  43:  * statement added in JDK 1.4, to indicate that an assertion failed. There
  44:  * are enough constructors to ensure that
  45:  * <code>new AssertionError(<em>expression</em>)</code> will work for all
  46:  * expressions, regardless of type, as if the error message were given by
  47:  * the string <code>"" + <em>expression</em></code>. This extends Error,
  48:  * because you usually do not want to inadvertently trap an assertion failure.
  49:  *
  50:  * @author Eric Blake (ebb9@email.byu.edu)
  51:  * @since 1.4
  52:  * @status updated to 1.4
  53:  */
  54: public class AssertionError extends Error
  55: {
  56:   /**
  57:    * Compatible with JDK 1.4+.
  58:    */
  59:   private static final long serialVersionUID = -5013299493970297370L;
  60: 
  61:   /**
  62:    * Construct an AssertionError with no detail message.
  63:    */
  64:   public AssertionError()
  65:   {
  66:   }
  67: 
  68:   /**
  69:    * Construct an AssertionError with the string conversion of the given
  70:    * object as its error message. If the object is a Throwable, it is also
  71:    * set as the cause of this error.
  72:    *
  73:    * @param msg the source of the error message
  74:    * @see Throwable#getCause()
  75:    */
  76:   public AssertionError(Object msg)
  77:   {
  78:     super("" + msg);
  79:     if (msg instanceof Throwable)
  80:       initCause((Throwable) msg);
  81:   }
  82: 
  83:   /**
  84:    * Construct an AssertionError with the string conversion of the given
  85:    * boolean as its error message.
  86:    *
  87:    * @param msg the source of the error message
  88:    */
  89:   public AssertionError(boolean msg)
  90:   {
  91:     super(msg ? "true" : "false");
  92:   }
  93: 
  94:   /**
  95:    * Construct an AssertionError with the string conversion of the given
  96:    * char as its error message.
  97:    *
  98:    * @param msg the source of the error message
  99:    */
 100:   public AssertionError(char msg)
 101:   {
 102:     super(String.valueOf(msg));
 103:   }
 104: 
 105:   /**
 106:    * Construct an AssertionError with the string conversion of the given
 107:    * int as its error message.
 108:    *
 109:    * @param msg the source of the error message
 110:    */
 111:   public AssertionError(int msg)
 112:   {
 113:     super(Integer.toString(msg, 10));
 114:   }
 115: 
 116:   /**
 117:    * Construct an AssertionError with the string conversion of the given
 118:    * long as its error message.
 119:    *
 120:    * @param msg the source of the error message
 121:    */
 122:   public AssertionError(long msg)
 123:   {
 124:     super(Long.toString(msg));
 125:   }
 126: 
 127:   /**
 128:    * Construct an AssertionError with the string conversion of the given
 129:    * float as its error message.
 130:    *
 131:    * @param msg the source of the error message
 132:    */
 133:   public AssertionError(float msg)
 134:   {
 135:     super(Float.toString(msg));
 136:   }
 137: 
 138:   /**
 139:    * Construct an AssertionError with the string conversion of the given
 140:    * double as its error message.
 141:    *
 142:    * @param msg the source of the error message
 143:    */
 144:   public AssertionError(double msg)
 145:   {
 146:     super(Double.toString(msg));
 147:   }
 148: }