这里面的空的地方要写什么呢，麻烦大哥们给讲解一下！！

Question

interface IA{ void m1(); void m2(); } _____ class MyClassA implements IA{ public void m1(){} } class MyClassB extends MyClassA{ _______________ {} }

Answer 1

问题还没关闭？？？？笑尿

Answer 2

interface IA{
void m1();
void m2();
}

public class MyClassA implements IA{
    public void m1(){}

}
public class MyClassB extends MyClassA{
    public void m2() {
    
    }
}

Answer 3

interface IA{
void m1();
void m2();
}

public abstract class MyClassA implements IA{
    public void m1(){}

}
public class MyClassB extends MyClassA{
    public void m2() {
    
    }
}