编辑代码

class Main{
    public static void main(String[] args){
        MammalInt m = new MammalInt();
        m.eat();
        m.travel();
    }
}
interface Animal{
    public static final int a = s;
    public void eat();
    public void travel();
}
abstract Animal{
    public abstract void eat();
}
class MammalInt implements Animal{
    public void eat(){
        System.out.println("Mammal eats");
        System.out.println("Mammal eats"+this.a);
    }
    public void travel(){
        System.out.println("Mammal travels");
    }
    public int noOfLegs(){
        return 0;
    }
}