public boolean equals(Timestamp ts) {
return ts != null && getTime() == ts.getTime() && getNanos() == ts.getNanos();
}
public boolean before(Timestamp ts) {
return (getTime() < ts.getTime()) || (getTime() == ts.getTime() && getNanos() < ts.getNanos());
}
public int compareTo(Timestamp o) {
int sign = Long.signum(getTime() - o.getTime());
return sign == 0 ? getNanos() - o.getNanos() : sign;
}
public boolean after(Timestamp ts) {
return (getTime() > ts.getTime()) || (getTime() == ts.getTime() && getNanos() > ts.getNanos());
}