001/* IntegerSyntax.java -- 002 Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038package javax.print.attribute; 039 040import java.io.Serializable; 041 042/** 043 * <code>IntegerSyntax</code> is the abstract base class of all attribute 044 * classes having an integer as value. 045 * 046 * @author Michael Koch (konqueror@gmx.de) 047 */ 048public abstract class IntegerSyntax implements Cloneable, Serializable 049{ 050 private int value; 051 052 /** 053 * Creates a <code>IntegerSyntax</code> with the given value. 054 * 055 * @param value the integer to set 056 */ 057 protected IntegerSyntax(int value) 058 { 059 this.value = value; 060 } 061 062 /** 063 * Creates a <code>IntegerSyntax</code> with the given integer value 064 * and checks if the value lies inside the given bounds.. 065 * 066 * @param value the integer to set 067 * @param lowerBound the lower bound for the value 068 * @param upperBound the upper bound for the value 069 * 070 * @exception IllegalArgumentException if value < lowerBound 071 * or value > upperBound 072 */ 073 protected IntegerSyntax(int value, int lowerBound, int upperBound) 074 { 075 if (value < lowerBound 076 || value > upperBound) 077 throw new IllegalArgumentException("value not in range"); 078 079 this.value = value; 080 } 081 082 /** 083 * Returns the value of this object. 084 * 085 * @return The integer value. 086 */ 087 public int getValue() 088 { 089 return value; 090 } 091 092 /** 093 * Tests if the given object is equal to this object. 094 * 095 * @param obj the object to test 096 * 097 * @return <code>true</code> if both objects are equal, 098 * <code>false</code> otherwise. 099 */ 100 public boolean equals(Object obj) 101 { 102 if(! (obj instanceof IntegerSyntax)) 103 return false; 104 105 return value == ((IntegerSyntax) obj).getValue(); 106 } 107 108 /** 109 * Returns the hashcode for this object. 110 * 111 * @return The hashcode. 112 */ 113 public int hashCode() 114 { 115 return value; 116 } 117 118 /** 119 * Returns the string representation for this object. 120 * 121 * @return The string representation. 122 */ 123 public String toString() 124 { 125 return "" + value; 126 } 127}