Java BigDecimal from toBigDecimal(Number n)

Description

Converts any number to a BigDecimal, suited for comparison and (monetary) arithmetic.

License

Apache License

Parameter

Parameter	Description
n	The number

Declaration

public static BigDecimal toBigDecimal(Number n) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2009, 2010 Innovation Gate GmbH
 * /*  ww  w. j a  v a2 s  .  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 java.math.BigInteger;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

public class Main {
    /**
     * Converts any number to a BigDecimal, suited for comparison and (monetary) arithmetic.
     * This class uses conversions that avoid rounding errors by forced conversion for the 
     * Number types from JRE. Fallback for other types is to convert them to Double.
     * @param n The number
     */
    public static BigDecimal toBigDecimal(Number n) {

        if (n instanceof BigDecimal) {
            return (BigDecimal) n;
        }
        if (n instanceof Long) {
            return new BigDecimal((Long) n);
        } else if (n instanceof Integer) {
            return new BigDecimal((Integer) n);
        } else if (n instanceof Float) {
            return new BigDecimal((Float) n);
        } else if (n instanceof Double) {
            return new BigDecimal((Double) n);
        } else if (n instanceof Short) {
            return new BigDecimal((Short) n);
        } else if (n instanceof Byte) {
            return new BigDecimal((Byte) n);
        } else if (n instanceof BigInteger) {
            return new BigDecimal((BigInteger) n);
        } else if (n instanceof AtomicInteger) {
            return new BigDecimal(n.intValue());
        } else if (n instanceof AtomicLong) {
            return new BigDecimal(n.longValue());
        } else {
            return new BigDecimal(n.doubleValue());
        }

    }
}

Related

1. toBigDecimal(final String string)
2. toBigDecimal(final String value)
3. toBigDecimal(Integer num)
4. toBigDecimal(JsonValue val)
5. toBigDecimal(long seconds, int nanoseconds)
6. toBigDecimal(Number n)
7. toBigDecimal(Number n)
8. toBigDecimal(Number n)
9. toBigDecimal(Number num)