java随机生成用户名（qq、手机、邮箱、虚拟姓名等格式用户名）

代码简单干净，易于扩展。 随机生成用户名样例： 339063 77188 fengjr1980@yeah.net 97133 xupe19870102@sohu.com 18955990722 2145028 25070167 299966 13329809029 18739552501 77223 725525865 cheng1991 chub1974 13290062609 wangf19750725 caot19850619 545121 qianih19760611@msn.com 15208376363 xieww1979 shixd0904@126.com 18035677437 80892 18967033182 18923271615 15506730128 19741 fangi0713 15829813954 58285 yuanr19730429 shenpk 79607 15430 15226507276 13905108731 71852 qianmp19900629 15578331045 28116 18636868380 41560 zhengk1009@qq.com chuh19901023 269195 5678146 29585 18416167445 konghs1014 13404997586 30505 13647749758 13153649262 18779413966 wangqq1985 18906839566 18915522113 13392180833 1539516 zhaod19960502@ask.com 422424 heee0615 fengc@163.com 39174 xuyv19780415 15463681074 700812 73013 xuh0513 15505384990 hedd19940702 54021 xum19930812 youy1991 qiner 18033283015 yangwc 57195 qinu shenk0513 zhoufg 94597 95435 zhanvn1985 qiankh0104@ask.com kongw1993 zhuhv 15922309734 15015131852 15617928674 13135363801 18249225151 81438 13163635474 18615772400 hes0510 460915 wum19781014 491159 shenh1973 625701 34613 15732006897 fengdk1985 18517435664 13412117745 10157 chuza1993@163.com zhaokk0810@sina.com 34270 7744626 sunb0122 71114 91762 18506579548 yangmy0227 18791566645 13250565847 jiangvk1977 15250922291 37579 wangci1965 wangpq wango19850516 18531237843 18589683471 hegl1990 18714299209 zhant@gmail.com 29016 zhux1969 xiez1113 zhengtw 15490897758 18917969768 18149215132 18608279756 17149 18644736737 zhaov19880816 xuy@aol.com 5854142 18408454618 qinl1988 xubl1990 18852302621 18985792169 42928 18622907192 fanggs19960616@163.com 25150 47585 15086377222 617299 13447565144 668953950 4342797 18638890078 fangiq0615 zhuo19701127@ask.com 421528 15690966759 18058824538 18194138008 15770603106 heag0813 15793392577 470979 18402649812 1791830 18397977938 shukj19960528 87052642 chulu0119 jiangj1986 13210747847 47359 80638214 zhuey0405 94017 13636960571 18939715988 yuani0529@msn.com 58081 caodm1989 18420167788 139516038