/*** * @Title: test_exchange* @Description: 该方法的主要作用:交换两个数* @param 设定文件 * @return 返回类型:void * @throws*/@Testpublic void test_exchange(){int num1 = 10;int num2 = 20;int exchange = 0;System.out.println("原来的数:"+num1+"\t"+num2);exchange = num1;num1 = num2;num2 = exchange;System.out.println("交换之后的数:"+num1+"\t"+num2);}