这个写interface 和 class就能完成。
这个主要用到接口和实现的问题:
如有帮助请在我的回答上点个【采纳】
myItfc接口:
package com.test.server;
public interface myItfc {
public double area(double a);
}
测试类:
package com.test.server;
public class TestInterface implements myItfc {
@Override
public double area(double a) {
// TODO Auto-generated method stub
return a*a*a;
}
public static void main(String[] args) {
TestInterface t = new TestInterface();
System.out.println(t.area(2));
}
}
package T1;
public class Test implements MyItfc {
@Override
public double area(double param) {
// TODO Auto-generated method stub
return Math.pow(param, 3);
}
public static void main(String[] args) {
Test test = new Test();
System.out.println(test.area(10));
}
}
interface MyItfc {
double area(double param);
}