package generic;public class GenericOne {    public static void main(String[] args) {        // TODO Auto-generated method stub        GenericOne.
     
      getMiddle("a","b","c");    }        /**     * 泛型可以被不同类型的对象重用     *      * 构造函数可以省略泛型类型     */        //定义简单泛型类    class Pair
      
       {        private T first;        private T second;                public Pair(){}        public Pair(T first, T second) {            super();            this.first = first;            this.second = second;        }        public T getFirst() {            return first;        }        public void setFirst(T first) {            this.first = first;        }        public T getSecond() {            return second;        }        public void setSecond(T second) {            this.second = second;        };    }        //泛型方法，可以定义在泛型或非泛型方法中    //在方法名的方扩号内定义具体的类    public static 
       
        T getMiddle(T ... a){        return a[a.length/2];    }}