Java BigDecimal getWithoutTrailingZeroes(@Nullable final BigDecimal aValue)

Description

Get the passed BigDecimal without any trailing zeroes.

License

Apache License

Parameter

Parameter	Description
aValue	The BigDecimal to be modified. May be <code>null</code>.

Return

null if the input value is null.

Declaration

@Nullable
@CheckReturnValue
public static BigDecimal getWithoutTrailingZeroes(@Nullable final BigDecimal aValue) 

Method Source Code

//package com.java2s;
/**/*from  w  ww  .  ja va2  s  .co m*/
 * Copyright (C) 2014-2017 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.math.BigDecimal;

import javax.annotation.CheckReturnValue;

import javax.annotation.Nullable;

public class Main {
    /**
     * Get the passed String as a BigDecimal without any trailing zeroes.
     *
     * @param sValue
     *        The String to be used as a BigDecimal to be modified. May be
     *        <code>null</code>.
     * @return <code>null</code> if the input value is <code>null</code>.
     */
    @Nullable
    @CheckReturnValue
    public static BigDecimal getWithoutTrailingZeroes(@Nullable final String sValue) {
        if (sValue == null)
            return null;

        return getWithoutTrailingZeroes(new BigDecimal(sValue));
    }

    /**
     * Get the passed BigDecimal without any trailing zeroes. Examples:
     * <ul>
     * <li>new BigDecimal ("0.00000000") --&gt; 0</li>
     * <li>new BigDecimal ("10") --&gt; 10</li>
     * <li>new BigDecimal ("10.00000000") --&gt; 10</li>
     * <li>new BigDecimal ("10.1") --&gt; 10.1</li>
     * <li>new BigDecimal ("10.10000000") --&gt; 10.1</li>
     * <li>new BigDecimal ("10.345") --&gt; 10.345</li>
     * <li>new BigDecimal ("10.3450000000") --&gt; 10.345</li>
     * </ul>
     *
     * @param aValue
     *        The BigDecimal to be modified. May be <code>null</code>.
     * @return <code>null</code> if the input value is <code>null</code>.
     */
    @Nullable
    @CheckReturnValue
    public static BigDecimal getWithoutTrailingZeroes(@Nullable final BigDecimal aValue) {
        if (aValue == null)
            return null;

        // stripTrailingZeros does not work for "0"!
        if (BigDecimal.ZERO.compareTo(aValue) == 0)
            return BigDecimal.ZERO;

        final BigDecimal ret = aValue.stripTrailingZeros();
        // Avoid stuff like "6E2"
        return ret.scale() >= 0 ? ret : ret.setScale(0);
    }
}

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