What's the _____ of having a public open space where you can't eat, drink or even simply hang out for a while?[ ]

A. sense

B. matter

C. case

D. opinion

下列程序中，给出两个整数2和3，分别求2除以3和2乘以3的结果，要求调用类ex19_1的方法method()来输出相应的结果，请将程序补充完整。程序运行结果如下。
0.6666666666666666
6
源程序文件代码清单如下：
public class exl9 1

public static void main(String args[])

int n1=2,n2=3;
ex19_1 obj19_1=new ex19_1();
obj19_1.

public void method(int x,int y)

System.out.println(______);
System.out.println(______);