大神在哪里？

class Parent{
public int value;
public Parent(){}
Parent(int value){
this.value=value;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
}
class Son extends Parent{
private int number;
public Son(int number,int value){
super(value); // 调用父类的构造方法
this.number=number;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
public Son(int number){}
public void test(){
value=8;
}
}
public class TestJava{
public static void main(String[] args){
Parent p=new Parent(10);
System.out.println(p.getValue()); //此处输出结果应该为10，如果不正确，请调试。
Son s1=new Son(18,20);
System.out.println(s1.getValue()+","+s1.getNumber());
//此处输出结果应该为18,20
Son s2=new Son(20);
System.out.println(s2.getValue()+","+s2.getNumber());
//此处输出结果应该为0,20
s2.test();
System.out.println(s2.getValue()+","+s2.getNumber());
//此处输出结果应该为8,20
}
}
@暮落秦香