Java Number Round roundOff(double fraction, int precision)

Description

Rounds off fraction to the given amount of precision.

License

Open Source License

Parameter

Parameter	Description
fraction	a parameter
precision	a parameter

Declaration

public static double roundOff(double fraction, int precision) 

Method Source Code

//package com.java2s;
/*//  ww  w.  ja va 2s.  co  m
 * Copyright (c) 2015, Alachisoft. All Rights Reserved.
 *
 * 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.
 */

public class Main {
    /**
     * Rounds off fraction to the given amount of precision. Faster than
     * DecimalFormat
     *
     * @param fraction
     * @param precision
     * @return
     */
    public static double roundOff(double fraction, int precision) {
        int i = 0;
        int finalNum = 1;
        while (i++ < precision) {
            finalNum *= 10;
        }
        return (double) Math.round(fraction * finalNum) / finalNum;
    }
}

Related

1. roundNumber(double theNumber, int places)
2. roundNumber(float input, float rounding)
3. roundNumber(String n)
4. roundNumberTo(double value, int decimals)
5. roundNumberToDouble(double value, int decimals)
6. roundOffAmt(double dAmt)
7. roundOffFileCount(int fileCount)
8. roundOffTo2DecPlaces(double val)
9. roundOffValues(double[] doubles)