class father1
{
	int f;
	//췽
	public father1()
	{
		f=1;
		System.out.println("޲ι췽");
	}
	public father1(int f)
	{
		this.f=f;
	}
}
class son1 extends father1
{
	int s;
	//췽
	public son1()
	{
		s=1;
		System.out.println("޲ι췽");
	}
	public son1(int f,int s)
	{
		//øĹ췽ԳԱfʼ
		super(f);
		//this.f=f;
		this.s=s;
	}
	//иԱֵ
	public void print()
	{
		System.out.println("f="+f+",s="+s);
	}
}
public class SuperCallConstructorDemo4_11 {
	public static void main(String[] args) {
		son1 s1=new son1();
		son1 s2=new son1(15,20);
		s1.print();
		s2.print();
	}
}
