单选题 在Java中,以下程序编译运行后的输出结果为( ).public class Test {int x, y;Test(int x, int y) {//一个带参构造器this.x = x;this.y = y;}public static void main(String[] args) {Test pt1, pt2;pt1 = new Test(3, 3);pt2 = new Test(4, 4);System.out.print( pt1.x+pt2.x);}}