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The ucar.units Java package is for decoding and encoding formatted unit specifications (e.g. "m/s"), converting numeric values between compatible units (e.g. between "m/s" and "knot"), and for performing arithmetic operations on units (e.g. dividing one unit by another, or raising a unit to a power).

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/*
 * Copyright (c) 1998-2018 University Corporation for Atmospheric Research/Unidata
 * See LICENSE for license information.
 */
package ucar.units;

/**
 * Provides support for attempting to redefine a base quantity in a database.
 * 
 * @author Steven R. Emmerson
 */
public class QuantityExistsException extends UnitException {
	private static final long	serialVersionUID	= 1L;

	/**
	 * Constructs from the base quantity being redefined.
	 */
	public QuantityExistsException(final BaseQuantity quantity) {
		this("Base quantity \"" + quantity + " already exists");
	}

	/**
	 * Constructs from an error message.
	 * 
	 * @param msg
	 *            The error message.
	 */
	private QuantityExistsException(final String msg) {
		super(msg);
	}
}