编辑代码

class Main {
	public static void main(String[] args) {
        //JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。
		MamalInt m =new MamalInt();
        m.eat();
        m.travel();
	}
}
interface animal{
    public static final int a =5;
    public void eat();
    public void travel();


}
abstract class Animall{
    public abstract void eat();

}
class MamalInt implements Animal{
    private int age;
    public void setAge(int age){
        this.age=age;
    }
    public int getAge(){
        return age;
    }
    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;
    }
}