郁闷。。接口问题。我太菜了。。

Question

呵呵！！！value哪来的？Double类里可没有这个变量！

Answer 1

//anotherDouble.value
 私有的，不能访问//double thisVal = value;这个value是哪儿来的？

Answer 2

1。public interface Comparable{
public int compareTo(Object o);
}
2。public class Double implements Comparable{

public int compareTo(Object o){

    anotherDouble = (Double)o;
    double anotherVal =anotherDouble.value;
             double thisVal = anotherVal;
return 0;
}  
}

Answer 3

1。public interface Comparable{
public int compareTo(Object o);
}
2。public class Double implements Comparable{
     private double value;
     public void setValue(double value){
this.value = value;}
     public double getValue(){
return this.value;}

public int compareTo(Object o){
           if(!(o instance of Double)) return -1;

    anotherDouble = (Double)o;
    setValue(anotherDouble .getValue());
             return 0;
}  
}