DiamondProblem（钻石问题）

1.C++的继承设计有问题
2.java的改进
3.遗留的问题

package diamondProblem;interface W {    static int a = 1;}interface X extends W {    static int a = 3;}class Y implements W {    static int a = 4;}public class Solution extends Y implements X {    static int a = 5;    public static void main(String[] args) {        System.out.println(Solution.a);    }}