小编use*_*470的帖子

我有界面:

interface operations{  
    void sum();  
}   

我想要上课:

class matrix implements operations {  
    @override   
    void sum(matrix m) {  
    } 
}

class vector3D implements operations {  
    @override  
    void sum(vecor3D v) {  
    }
}

这该怎么做？我试过这样的事情:

interface operations < T > {  
    <T> void sum(T t);  
}

class matrix implements operations<matrix>{
    @Override
    void sum(matrix m){};
    }
}

class vector3D implements operations<vector3D>{
    @Override
    void sum(vector3D v){};
}

但它不起作用.

是否可以选择为两个变量执行一个setter/getter？或者唯一的选择是两个单独的setter/getter,如下所示:

int var1;
int var2;

public int var1 
    {
    get { return var1; }
    set { var1 = value; }
    }

public int var2 
    {
    get { return var2; }
    set { var2 = value; }
    }