信1407-2班20142897程怀远 课后题第一小题 10.17

public class Console {
private static int i;
public Console()
{
i++;//每new一个对象i+1
}
public  int getNum()
{
return i;//返回创建对象个数
}

}
class Finaly
{
public static void main(String[] args)
{
int num;
Console a = new Console();
Console b = new Console();//创建两个对象并初始化
num = b.getNum();
System.out.println("共有对象个数为 " +num );
}
}