接口和扩展中的变量

// interface que contém constantes
interface iconst {
    int min = 0;
    int max = 10;
    string errormsg = "boundary error";
}

class iconstd implements iconst {
    public static void main(string[] args) {
        int nums[] = new int[max];
        for (int i = min; i < 11; i++) {
            if (i >= max)
                system.out.println(errormsg);
            else {
                nums[i] = i;
                system.out.print(nums[i] + " ");
            }
        }
    }
}

// Interface A
interface A {
    void meth1();
    void meth2();
}

// Interface B estende A
interface B extends A {
    void meth3();
}

// Classe que implementa A e B
class MyClass implements B {
    public void meth1() {
        System.out.println("Implement meth1().");
    }

    public void meth2() {
        System.out.println("Implement meth2().");
    }

    public void meth3() {
        System.out.println("Implement meth3().");
    }
}

class IFExtend {
    public static void main(String[] args) {
        MyClass ob = new MyClass();
        ob.meth1();
        ob.meth2();
        ob.meth3();
    }
}