public boolean judge(){
   Calendar c1 = Calendar.getInstance();
   Calendar c2 = Calendar.getInstance();
   Calendar c3 = Calendar.getInstance();
   c1.set(2008,8,7,9,22);
   c2.set(2008,8,17,9,20);
   c3.set(2008,8,8,22,20);
   long l1 = c1.getTimeInMillis();
   long l2 = c2.getTimeInMillis();
   long l3 = c3.getTimeInMillis();
   if(l3>l1&&l3<l2){
       return true;
   }else{
       return false;
   }
}

------解决方案--------------------
可以转换成 GregorianCalendar，再利用其方法比较
不过还是用long 比较方便些
如3楼的方法