8.3 泛型方法

package chapter08;
public class ArrayAlg {
    public static <T> T getMiddle(T... a) {
        return a[a.length/2];
    }
    public static void main(String[] args) {
        String a = ArrayAlg.<String>getMiddle("abc", "def");
        System.out.println(a);
    }
}