dontcarefieldposition.java

java源代码 请看看啊 提点宝贵的意见

/*
 * @(#)DontCareFieldPosition.java	1.2 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.text;

/**
 * DontCareFieldPosition defines no-op FieldDelegate. Its
 * singleton is used for the format methods that don't take a
 * FieldPosition.
 */
class DontCareFieldPosition extends FieldPosition {
    // The singleton of DontCareFieldPosition.
    static final FieldPosition INSTANCE = new DontCareFieldPosition();

    private final Format.FieldDelegate noDelegate = new Format.FieldDelegate() {
	public void formatted(Format.Field attr, Object value, int start,
			      int end, StringBuffer buffer) {
	}
	public void formatted(int fieldID, Format.Field attr, Object value,
			      int start, int end, StringBuffer buffer) {
	}
    };

    private DontCareFieldPosition() {
	super(0);
    }

    Format.FieldDelegate getFieldDelegate() {
	return noDelegate;
    }
}