Java BigInteger Calculate getVersionString(BigInteger versionNumber)

Description

get Version String

License

Apache License

Declaration

public static String getVersionString(BigInteger versionNumber) 

Method Source Code

//package com.java2s;
/**//from w  w w  . j  a v  a 2s . c om
 * Copyright (C) 2014 Holger Hopmann (h.hopmann@uni-muenster.de)
 *
 * 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.BigInteger;

public class Main {
    private static final int MAX_DIVISIONS = 5;

    public static String getVersionString(BigInteger versionNumber) {

        StringBuilder versionStringBuilder = new StringBuilder();
        BigInteger integerMask = BigInteger.valueOf(Integer.MAX_VALUE);

        for (int i = 0; i < MAX_DIVISIONS; i++) {
            int division = (short) versionNumber.shiftRight((Integer.SIZE * (MAX_DIVISIONS - 1 - i)))
                    .and(integerMask).intValue();

            if (versionStringBuilder.length() != 0) {
                versionStringBuilder.append(".");
            }
            versionStringBuilder.append(division);
        }

        return versionStringBuilder.toString();
    }
}

Related

1. getRadixNumberInString(BigInteger integerNumber, int radix)
2. getRandomBigInteger(int bits)
3. getRandomInteger(BigInteger n, Random rand)
4. getSize(BigInteger number)
5. getValueWithUnit(BigInteger value, final int places)
6. greater(BigInteger i1, BigInteger i2)
7. hexEncode(BigInteger bigInteger)
8. increment(BigInteger integer)
9. int2zpBin(BigInteger num, int len)