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/* FieldPosition.java -- Keeps track of field positions while formatting
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
package java.text;
/**
* This class is used by the java.text formatting classes to track
* field positions. A field position is defined by an identifier value
* and begin and end index positions. The formatting classes in java.text
* typically define constant values for the field identifiers.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Per Bothner <bothner@cygnus.com>
*/
public class FieldPosition
{
/**
* This is the field identifier value.
*/
private int field_id;
/**
* This is the beginning index of the field.
*/
private int begin;
/**
* This is the ending index of the field.
*/
private int end;
/**
* This method initializes a new instance of <code>FieldPosition</code> to
* have the specified field id.
*
* @param field_id The field identifier value.
*/
public FieldPosition (int field_id)
{
this.field_id = field_id;
}
/**
* This method returns the field identifier value for this object.
*
* @return The field identifier.
*/
public int getField ()
{
return field_id;
}
/**
* This method returns the beginning index for this field.
*
* @return The beginning index.
*/
public int getBeginIndex ()
{
return begin;
}
/**
* This method sets the beginning index of this field to the specified value.
*
* @param begin The new beginning index.
*/
public void setBeginIndex (int begin)
{
this.begin = begin;
}
/**
* This method returns the ending index for the field.
*
* @return The ending index.
*/
public int getEndIndex ()
{
return end;
}
/**
* This method sets the ending index of this field to the specified value.
*
* @param end The new ending index.
*/
public void setEndIndex (int end)
{
this.end = end;
}
/**
* This method tests this object for equality against the specified object.
* The objects will be considered equal if and only if:
* <p>
* <ul>
* <li>The specified object is not <code>null</code>.
* <li>The specified object is an instance of <code>FieldPosition</code>.
* <li>The specified object has the same field identifier and beginning
* and ending index as this object.
* </ul>
*
* @param obj The object to test for equality to this object.
*
* @return <code>true</code> if the specified object is equal to
* this object, <code>false</code> otherwise.
*/
public boolean equals (Object obj)
{
if (! (obj instanceof FieldPosition))
return false;
FieldPosition fp = (FieldPosition) obj;
return (field_id == fp.field_id
&& begin == fp.begin
&& end == fp.end);
}
/**
* This method returns a <code>String</code> representation of this
* object.
*
* @return A <code>String</code> representation of this object.
*/
public String toString ()
{
return (getClass ().getName () + "[field=" + getField () + ",beginIndex="
+ getBeginIndex () + ",endIndex=" + getEndIndex () + "]");
}
}
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