JAVA 实现接口方法时报错 implement a supertype method

Question

public interface MultimediaControl {
public void play();
public void stop();
public void previous();
public void next();
}

public class AudioPlayer extends Product implements MultimediaControl {
String audioSpecification;
ItemType mediaType;

@Override //The method play() of type AudioPlayer must override or 
 implement a supertype method
public void play() {
    System.out.println("Playing");
}

@Override //The method stop() of type AudioPlayer must override or 
 implement a supertype method
public void stop() {
    System.out.println("Stopped");
}

@Override //The method previous() of type AudioPlayer must override or 
 implement a supertype method
public void previous() {
    System.out.println("To the previous");
}

@Override
public void next() //The method next() of type AudioPlayer must override or 
 implement a supertype method{
    System.out.println("To the Next");
}

public AudioPlayer(String name, ItemType Type) {
    super(name); //The constructor Product(String) is undefined
    mediaType = Type;
}

}

还有构造函数中调用父类带参构造函数, 父类中的构造函数 :
public Product(String Name) {
name = Name;
serialNumber = currentProductionNumber;
manufacturedOn = new Date();
}
明明有带String参数的构造?为什么会提示这些错误呢

Answer 1

我测试过了，没有问题啊，你是用Eclipse自动提示完成实现接口方法的吗？
先定义类实现接口后，使用Eclipse自动提示ctrl+1，选择实现接口方法，就能自动生成方法了。

没有问题的，你可以重新生成下代码，或者保存下文件。
父类构造函数调用没有问题的。