JAVA：覆盖接口方法
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时间：2020-08-14 08:55:57 来源:igfitidea点击:
JAVA: override interface method
提问by user3308470
I have interface:
我有接口：
interface operations{
void sum();
}
and I want to have classes:
我想上课：
class matrix implements operations {
@override
void sum(matrix m) {
}
}
class vector3D implements operations {
@override
void sum(vecor3D v) {
}
}
How to do this? I tried something like this:
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){};
}
but it doesn't work.
但它不起作用。
采纳答案by fabian
Don't add a type parameters to the interface andthe type. Also you should specify the generic parameters of the interface you implement:
不要在接口和类型中添加类型参数。您还应该指定您实现的接口的通用参数：
interface operations<T> {
void sum(T t);
}
class matrix implements operations<matrix> {
@Override
public void sum(matrix m){
}
}
class vector3D implements operations<vecor3D> {
@Override
public void sum(vecor3D v){
}
}
