Java Version Compare VersionComparer(String a, String b, boolean includeEqual)

Description

Version Comparer

License

Open Source License

Declaration

public static boolean VersionComparer(String a, String b, boolean includeEqual) 

Method Source Code

//package com.java2s;
/*/*from  w w w  .j  ava  2 s  .c o m*/
 * Copyright 2013 etao.com All right reserved. This software is the
 * confidential and proprietary information of etao.com ("Confidential
 * Information"). You shall not disclose such Confidential Information and shall
 * use it only in accordance with the terms of the license agreement you entered
 * into with etao.com .
 */

public class Main {

    public static boolean VersionComparer(String a, String b, boolean includeEqual) {
        if (a == null || b == null) {
            return false;
        }
        String regex = "^([0-9]+\\.)+([0-9]+)$";
        if (!a.matches(regex) || !b.matches(regex)) {
            return false;
        }
        if (a.equals(b)) {
            return includeEqual;
        }
        String as[] = a.split("\\.");
        String bs[] = b.split("\\.");
        int i = 0;
        while (as.length > i && bs.length > i) {
            int ai = Integer.parseInt(as[i]);
            int bi = Integer.parseInt(bs[i]);
            if (ai > bi) {
                return true;
            }
            if (ai < bi) {
                return false;
            }
            i++;
        }
        while (as.length > i) {
            int ai = Integer.parseInt(as[i]);
            if (ai > 0) {
                return true;
            }
            i++;
        }
        return false;
    }
}

Related

1. versionCompare(String fromVersion, String toVersion)
2. versionCompare(String str1, String str2)
3. versionCompare(String str1, String str2)
4. versionCompare(String userVersion, String supportVersion)
5. versionCompare(String ver1, String ver2)