如何在子类构造方法中获取父类变量值

class Parent {
    private int value;

    public Parent(int value) {
        this.value = value;
    }

    public int getValue() {
        return value;
    }
}

class Child extends Parent {
    private int childValue;

    public Child(int value, int childValue) {
        super(value); // 调用父类的构造方法初始化父类的成员变量
        this.childValue = childValue;
    }

    public int getChildValue() {
        return childValue;
    }
}

public class Main {
    public static void main(String[] args) {
        Child child = new Child(10, 20);
        System.out.println("父类变量值：" + child.getValue());
        System.out.println("子类变量值：" + child.getChildValue());
    }
}

父类变量值：10
子类变量值：20