接口的使用 Java PTA

Question

这种错误怎么改呀

下面是代码

public interface ComputeWeight{
  double ComputeWeight();
}
public class ComputeWeight implements Television
{
    double w1;
    Television(double w1)
    {
        super();
        this.w1 = w1;
    }
    return double w1;
} 
public class ComputeWeight implements AirConditioner
{
    double w2;
    AirConditioner(double w2)
    {
        super();
        this.w2 = w2;
    }
    return w2;
} 
public class ComputeWeight implements WashMachine
{
   double w3;
    WashMachine(double w3)
    {      
        super();
        this.w3 = w3；  
    }
    return w3;
} 
public class Truck {
  private ComputeWeight goods[];
   Truck(ComputerWeight[] goods) 
   {
        super();
        this.goods = goods;
    }
 public double getTotalWeight()
  {
     double sum = 0;
     for (i = 0;i<goods.length ;i++)
     {
     type=input.nextInt();                
            if (type==1)                                
               sum = sum +16.6;
            else if (type==2)
                sum = sum + 40.0;
            else if (type==3)
                sum = sum +60.0;
     }
     return sum;
   }  
 }

Answer 1

构造方法 要和 当前类 同名， 你都是 和 父类或接口同名 ，这是错误的