以下代码输出结果为：？<p>Class intWrap {</p><p>int x;}</p><p>Public class Main {</p><p>public static void main(String] args) {</p><p>intWrap i = new intWrap();</p><p>i.x = 10;</p><p>intWrap j = new intWrap();</p><p>j.x = 20;</p><p>swap(i, j);</p><p>System.out.println("i.x = " + i.x + ", j.x = " + j.x);</p><p>}</p><p>public static void swap(intWrap i, intWrap j) {</p><p>int temp = i.x;</p><p>i.x = j.x;</p><p>j.x = temp;</p><p>}}</p>