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JDK 1.6
  java.text. ParsePosition View Javadoc
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/*
 * @(#)ParsePosition.java	1.20 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/*
 * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved
 * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved
 *
 *   The original version of this source code and documentation is copyrighted
 * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These
 * materials are provided under terms of a License Agreement between Taligent
 * and Sun. This technology is protected by multiple US and International
 * patents. This notice and attribution to Taligent may not be removed.
 *   Taligent is a registered trademark of Taligent, Inc.
 *
 */

package java.text;


/**
 * <code>ParsePosition</code> is a simple class used by <code>Format</code>
 * and its subclasses to keep track of the current position during parsing.
 * The <code>parseObject</code> method in the various <code>Format</code>
 * classes requires a <code>ParsePosition</code> object as an argument.
 *
 * <p>
 * By design, as you parse through a string with different formats,
 * you can use the same <code>ParsePosition</code>, since the index parameter
 * records the current position.
 *
 * @version     1.20 11/17/05
 * @author      Mark Davis
 * @see         java.text.Format
 */

public class ParsePosition {

    /**
     * Input: the place you start parsing.
     * <br>Output: position where the parse stopped.
     * This is designed to be used serially,
     * with each call setting index up for the next one.
     */
    int index = 0;
    int errorIndex = -1;

    /**
     * Retrieve the current parse position.  On input to a parse method, this
     * is the index of the character at which parsing will begin; on output, it
     * is the index of the character following the last character parsed.
     */
    public int getIndex() {
        return index;
    }

    /**
     * Set the current parse position.
     */
    public void setIndex(int index) {
        this.index = index;
    }

    /**
     * Create a new ParsePosition with the given initial index.
     */
    public ParsePosition(int index) {
        this.index = index;
    }
    /**
     * Set the index at which a parse error occurred.  Formatters
     * should set this before returning an error code from their
     * parseObject method.  The default value is -1 if this is not set.
     * @since 1.2
     */
    public void setErrorIndex(int ei)
    {
        errorIndex = ei;
    }

    /**
     * Retrieve the index at which an error occurred, or -1 if the
     * error index has not been set.
     * @since 1.2
     */
    public int getErrorIndex()
    {
        return errorIndex;
    }
    /**
     * Overrides equals
     */
    public boolean equals(Object obj)
    {
        if (obj == null) return false;
        if (!(obj instanceof ParsePosition))
            return false;
        ParsePosition other = (ParsePosition) obj;
        return (index == other.index && errorIndex == other.errorIndex);
    }

    /**
     * Returns a hash code for this ParsePosition.
     * @return a hash code value for this object
     */
    public int hashCode() {
        return (errorIndex << 16) | index;
    }

    /**
     * Return a string representation of this ParsePosition.
     * @return  a string representation of this object
     */
    public String toString() {
        return getClass().getName() +
            "[index=" + index +
            ",errorIndex=" + errorIndex + ']';
    }
}

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