Example A Simple Class for Version Number

public class SimpleVNO {
    // Does not override equals() or hashCode().

    private int release;
    private int revision;
    private int patch;

    public SimpleVNO(int release, int revision, int patch) {
        this.release  = release;
        this.revision = revision;
        this.patch    = patch;
    }

    public String toString() {
        return "(" + release + "." + revision + "." + patch + ")";
    }
}