Override方法参数覆写

方法返回值参数可以通过继承的方式覆写

public class BaseEntity {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

public class SubEntity extends BaseEntity {

    private Integer age;

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

}

public interface BaseInterface {

    BaseEntity submit();
}

public interface SubInterface extends BaseInterface {

    @Override
    SubEntity submit();
}

public class TestInterface {
    
    @Test
    public void test1()
    {
        SubInterface subInterface=new SubInterface()
        {
            @Override
            public SubEntity submit() {
                SubEntity entity=new SubEntity();
                entity.setName("test");
                return entity;
            }
        };
        SubEntity entity=subInterface.submit();
    }
}