Java常用类—UUID

import java.util.UUID;

public class UUIDGenerator {

    public static String getUUID(){ 
        String s = UUID.randomUUID().toString(); 
        //去掉“-”符号 
        return s.substring(0,8)+s.substring(9,13)+s.substring(14,18)+s.substring(19,23)+s.substring(24); 
    } 
    /** 
     * 获得指定数目的UUID 
     * @param number int 需要获得的UUID数量 
     * @return String[] UUID数组 
     */ 
    public static String[] getUUID(int number){ 
        if(number < 1){ 
            return null; 
        } 
        String[] ss = new String[number]; 
        for(int i=0;ireturn ss; 
    } 
    public static void main(String[] args){ 
        /*String[] ss = getUUID(1); 
        for(int i=0;i
        String ss1= getUUID();
        System.out.println(ss1);
        System.out.println(ss1.length());
    } 


}