以下代码输出结果为：class Main {public static void swap(Integer i, Integer j) { Integer temp = new Integer(i); i = j; j = temp; } public static void main(String[] args) { Integer i = new Integer(10); Integer j = new Integer(20); swap(i, j); System.out.println("i = " + i + ", j = " + j); }}
（A）i = 10, j = 20
（B）i = 20, j = 10
（C）i = 10, j = 10
（D）i = 20, j = 20
参考答案
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