JAVA生成消息序列

public class MsgSeqGenerator
{

private static AtomicLong id = new AtomicLong(0);

private static String moduleId;

public static void setModuleId(String moduleId)
{
MsgSeqGenerator.moduleId = moduleId;
}

public static String getMsgSeq()
{
String msgSeq;
if (StringUtils.isEmpty(moduleId))
{
id.compareAndSet(0xFFFFFFFFL, 0);
long seq = id.incrementAndGet();
msgSeq = String.format("%08X", seq);
}
else
{
id.compareAndSet(0xFFFFFL, 0);
long seq = id.incrementAndGet();
msgSeq = moduleId + String.format("%05X", seq);
}

return msgSeq;
}

}