阅读下面的程序,写出该程序的输出结果: package threeArrayLenth; public class threeArrayLenth { public static void main(String[] args) { // TODO Auto-generated method stub int[][] x; x = new int [3][]; x[0]=new int[3]; x[1]=new int[6]; int xlen = 0; xlen = x[1].length; System.out.println("xlen = " + xlen); } }