Calendar ctemp=Calendar.getInstance();
Calendar ccheckDate=Calendar.getInstance();
Calendar ccheckInEnd=Calendar.getInstance();
ccheckDate.setTime(checkDate);//Date 转 Calendar
ccheckInEnd.setTime(checkInEnd);
//calendar的set 和 get
ctemp.set(Calendar.YEAR, ccheckDate.get(Calendar.YEAR));
ctemp.set(Calendar.MONTH, ccheckDate.get(Calendar.MONTH));
ctemp.set(Calendar.DATE, ccheckDate.get(Calendar.DATE));
ctemp.set(Calendar.HOUR_OF_DAY, ccheckInEnd.get(Calendar.HOUR_OF_DAY));
ctemp.set(Calendar.MINUTE, ccheckInEnd.get(Calendar.MINUTE));
Date checkInEndTime = ctemp.getTime();//Calendar 转Date