seq.java

移动CMPP2.0 Java SDK

package cmpp.v2_0;

public class Seq
{
    public 	static Class 	seqclass = (new Seq()).getClass();
    private static  int 	sn;
    private static  int 	MaxSeq;

    public Seq()
    {
    		sn = 0;
    		MaxSeq = 0x7fffffff;
    }

    public Seq(int min, int max)
    {
        if (min >= max || max > 0x7fffffff)
        {
        	sn = 0;
           	MaxSeq = 0x7fffffff;
        }
        else
        {
        	sn = 0;
        	MaxSeq = max;
        }
    }

    public int getsn()
    {
        return sn;
    }

    public  synchronized static void computeSequence()
    {
        if(sn >= MaxSeq)
            sn = 0;
        else
            sn++;
    }
    
    public static void main(String args[]) {
    	Seq.computeSequence();
    }

}