Java获取当月的天数的代码，java当月天数,Calendar c

Java获取当月的天数的代码，java当月天数,Calendar c

Calendar   cal   =   Calendar.getInstance();     cal.set(Calendar.YEAR,2002);     cal.set(Calendar.MONTH,6);//7月     int   maxDate   =   cal.getActualMaximum(Calendar.DATE);