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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups;

import org.jgroups.annotations.Immutable;

/**
 * We're using the scheme described at http://www.jboss.com/index.html?module=bb&op=viewtopic&t=77231
 * for major, minor and micro version numbers. We have 5 bits for major and minor version numbers each and
 * 6 bits for the micro version.
 * This gives:
 * X = 0-31 for major versions
 * Y = 0-31 for minor versions
 * Z = 0-63 for micro versions
 *
 * @author Bela Ban
 * Holds version information for JGroups.
 */
@Immutable
public class Version {
    public static final short  major = 3;
    public static final short  minor = 6;
    public static final short  micro = 2;
    public static final String description=major + "." + minor + "." + micro + ".Final";

    public static final short  version=encode(major, minor, micro);
    public static final String string_version=print(version);

    private static final int   MAJOR_SHIFT = 11;
    private static final int   MINOR_SHIFT = 6;
    private static final int   MAJOR_MASK  = 0x00f800; // 1111100000000000 bit mask
    private static final int   MINOR_MASK  = 0x0007c0; //      11111000000 bit mask
    private static final int   MICRO_MASK  = 0x00003f; //           111111 bit mask
    


    /**
     * Prints the value of the description and cvs fields to System.out.
     * @param args
     */
    public static void main(String[] args) {
        System.out.println("\nVersion:      " + description);
    }


    /**
     * Returns the catenation of the description and cvs fields.
     * @return String with description
     */
    public static String printDescription() {
        return "JGroups " + description;
    }

    /**
     * Returns the version field as a String.
     * @return String with version
     */
    public static String printVersion() {
        return string_version;
    }


    /**
     * Compares the specified version number against the current version number.
     * @param v short
     * @return Result of == operator.
     */
    public static boolean isSame(short v) {
        return version == v;
    }

    /** Method copied from http://www.jboss.com/index.html?module=bb&op=viewtopic&t=77231 */
    public static short encode(int major, int minor, int micro) {
        return (short)((major << MAJOR_SHIFT) + (minor << MINOR_SHIFT) + micro);
    }

    /** Method copied from http://www.jboss.com/index.html?module=bb&op=viewtopic&t=77231 */
    public static String print(short version) {
        int major=(version & MAJOR_MASK) >> MAJOR_SHIFT;
        int minor=(version & MINOR_MASK) >> MINOR_SHIFT;
        int micro=(version & MICRO_MASK);
        return major + "." + minor + "." + micro;
    }


    public static short[] decode(short version) {
        short major=(short)((version & MAJOR_MASK) >> MAJOR_SHIFT);
        short minor=(short)((version & MINOR_MASK) >> MINOR_SHIFT);
        short micro=(short)(version & MICRO_MASK);
        return new short[]{major, minor, micro};
    }

    /**
     * Checks whether ver is binary compatible with the current version. The rule for binary compatibility is that
     * the major and minor versions have to match, whereas micro versions can differ.
     * @param ver
     * @return
     */
    public static boolean isBinaryCompatible(short ver) {
        if(version == ver)
            return true;
        short tmp_major=(short)((ver & MAJOR_MASK) >> MAJOR_SHIFT);
        short tmp_minor=(short)((ver & MINOR_MASK) >> MINOR_SHIFT);
        return major == tmp_major && minor == tmp_minor;
    }


    public static boolean isBinaryCompatible(short ver1, short ver2) {
        if(ver1 == ver2)
            return true;
        short[] tmp=decode(ver1);
        short tmp_major=tmp[0], tmp_minor=tmp[1];
        tmp=decode(ver2);
        short tmp_major2=tmp[0], tmp_minor2=tmp[1];
        return tmp_major == tmp_major2 && tmp_minor == tmp_minor2;
    }

}