我试图使一个整数和一个自然数的接口，但我无法使它任何人都可以告诉我我得到的错误alp1.java： 9：错误：wholeNumber不是抽象的，不覆盖抽象方法add（int，int）在数字类wholeNumber实现数字{^alp1.java:40：错误：naturalNumber不是抽象的，不覆盖抽象方法add（int，int）在数字类naturalNumber实现数字{

 interface number{
public void validateNumber(int num);
public void add(int num1,int num2);
public void subtract(int num1,int num2);
public void multiply(int num1,int num2);
public void divide(int num1,int num2);
}

class wholeNumber implements number{
public void validateNumber(int num){
    if(num<-46340 || num>46340){
        System.out.println("Wrong input");
    }
}

public void sum(int n1,int n2){
    int sum=n1+n2;
    System.out.println("SUM "+sum);
}
public void subtract(int n1,int n2){
    int ans=n1-n2;
    System.out.println("subtract "+ans);
}
public void multiply(int n1,int n2){
    int ans=n1*n2;
    System.out.println("multiply "+ans);
}
public void divide(int n1,int n2){
    if(n2==0){
        System.out.println("divide 0");
    }
    else{
        int ans=n1/n2;
        System.out.println("divide "+ans);
    }
    
}
 }

  class naturalNumber implements number{
public void validateNumber(int num){
    if(num<0|| num>46340){
        System.out.println("Wrong input");
    }
}

public void sum(int n1,int n2){
    int sum=n1+n2;
    System.out.println("SUM "+sum);
}
public void subtract(int n1,int n2){
    int ans=n1-n2;
    System.out.println("subtract "+ans);
}
public void multiply(int n1,int n2){
    int ans=n1*n2;
    System.out.println("multiply "+ans);
}
public void divide(int n1,int n2){
    if(n2==0){
        System.out.println("divide 0");
    }
    else{
        int ans=n1/n2;
        System.out.println("divide "+ans);
    }
    
}
 }

class alp1{

public static void main(String []args){
    // if(args[0]=="whole"){
    //  wholeNumber obj=new wholeNumber();

    // }
    for(int i=0;i<args.length;i++)
        {System.out.println(args[i]);}
}
}