类实现扩展另一个接口的接口

Question

I want to implement an interface in my class that extends from another interface, but I get the follow error:

Class1 is not abstract and does not override abstract method method2(param1,param2) in Interface2

public class Class1 implements Interface1 {       
    public Class1() {
        //some init
    }

    @Override
    public Object method1(Object param1) {
        //some code
    }

    @Override
    public void method2(Object param1, Object param2) {
        //some code
    }         
}

public interface Interface1 extends Interface2 {       
     //some specific code
}

public interface Interface2 {
    public Object method1(Object param1);
    public void method2(Object param1, Object param2);
}

Why doesn't it work and what do I have to do, to make it work?

Answer 1

provide the type for the parameters param1 and param2 try this

  public class Class1 implements Interface1 {       
    public Class1() {
        //some init
    }

    @Override
    public Object method1(String param1) {
        //some code
        return null;
    }

    @Override
    public void method2(String param1,String param2) {
        //some code
    }         
}


 interface Interface1 extends Interface2 {       
     //some specific code
}


 interface Interface2 {
    public Object method1(String param1);
    public void method2(String param1,String param2);
}