多选题

知识点：Java 7/10（多选） Given the following...

Question

知识点：Java 7/10（多选）
Given the following code fragment, please select the correct descriptions of generated output

public class Parent{
    public int m = 0
    public void doAction1(){
        System.out.println(m)
    }
    public void doAction2(){
        System.out.println(m)
    }
}

public class Child extends Parent {
    public int m = 1

    public void doAction1() {
        System.out.println(m)
    }

    public static void main(String[] args) {
        Parent parent = new Child()
        parent.doAction1()
        parent.doAction2()
        System.out.println(parent.m)
        Child child = (Child)parent
        System.out.println(child.m)
        child.doAction1()
    }
}

A. 1 is printed in the first line.

B. 0 is printed in the second line.

C. 0 is printed in the third line.

D. 0 is printed in the fourth line.

E. 0 is printed in the fifth line.