package generic;import java.io.Serializable;import java.util.Comparator;public class GeneriThree {    public static void main(String[] args) {        // TODO Auto-generated method stub    }        /**     * 类型擦除     *      * 原始类型：     * 删除类型参数的泛型类型名。     *      * 擦除类型变量并替换为限定类型（无限定的变量用Object）     */        //Pair
     
       的原始类型如下        class Pair{                private Object first;        private Object second;        public Object getFirst() {            return first;        }        public void setFirst(Object first) {            this.first = first;        }        public Object getSecond() {            return second;        }        public void setSecond(Object second) {            this.second = second;        }            }        //再如：原始类型    /*class Interval
      
        & Serializable> implements Serializable{                private static final long serialVersionUID = 1L;         private T low;        private T upper;                public  Interval(T first,T second){            if (first.compareTo(second)<=0) {                 low = first;                 upper = second;            }        }    }*/        //限定类型    class Interval implements Serializable{                private static final long serialVersionUID = 1L;         private Comparable low;        private Comparable upper;                        public  Interval(Comparable first,Comparable second){            if (first.compareTo(second)<=0) {                 low = first;                 upper = second;            }        }    }            }