Class VersionComparator

  • All Implemented Interfaces:
    java.util.Comparator<java.lang.String>

    public class VersionComparator
    extends java.lang.Object
    implements java.util.Comparator<java.lang.String>
    Compares 2 different version strings.

    The version strings must be valid integers separated by . (dots).

    Date: 09.11.2011

    Author:
    James R. Perkins
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int compare​(java.lang.String o1, java.lang.String o2)  
      static int compareVersion​(java.lang.String version1, java.lang.String version2)
      Compares the first version to the second version and returns, 0 if they are equal, a value less than 0 if the first version is less than the second version or a value greater than 0 if the first version is greater than the second version.
      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
      • Methods inherited from interface java.util.Comparator

        equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
    • Method Detail

      • compareVersion

        public static int compareVersion​(java.lang.String version1,
                                         java.lang.String version2)
        Compares the first version to the second version and returns, 0 if they are equal, a value less than 0 if the first version is less than the second version or a value greater than 0 if the first version is greater than the second version.
        Parameters:
        version1 - the first version to compare.
        version2 - the second version to compare.
        Returns:
        a value of 0 if the versions are equal, less than 0 if version1 is less than version2, a value greater than 0 if version1 is greater than version2.
      • compare

        public int compare​(java.lang.String o1,
                           java.lang.String o2)
        Specified by:
        compare in interface java.util.Comparator<java.lang.String>