解释一下orderQueue.add(new Order(Integer.valueOf(substr[1]), Integer.valueOf(substr[2]), substr[3]));

这行代码的作用是向 orderQueue 队列中添加一个 Order 对象，这个 Order 对象的构造函数接受三个参数：第一个参数是一个整数，代表订单的编号；第二个参数也是一个整数，代表订单的数量；第三个参数是一个字符串，代表订单的描述信息。具体来说，这行代码会将 substr 数组的第二个和第三个元素转化为整数，将 substr 数组的第四个元素作为字符串传入 Order 的构造函数中，然后将得到的 Order 对象添加到 orderQueue 队列的末尾。

相关问题

Integer.valueOf(substr[2]), substr[3])用法

这是Java语言中将字符串转换为整数的方法，使用两个参数，第一个参数是需要转换的字符串，第二个参数是指定转换的进制数。例如，Integer.valueOf("10", 2)将字符串"10"转换为二进制数值，即2。而Integer.valueOf("10", 10)将字符串"10"转换为十进制数值，即10。

Poco::strToInt(variable.component.substr(delimiter + 1), number, 10)

This line of code uses the Poco C++ library to convert a substring of a given variable (named "component") into an integer value. The substring is determined by the position of the first occurrence of a specified delimiter character (delimiter + 1) and the end of the string. The converted integer value is stored in a variable named "number" and is assumed to be in base 10 (specified by the last parameter, which is the radix or base).

For example, if the variable "component" contains the string "42|hello", and the delimiter character is '|', then this line of code will set the "number" variable to the integer value 0x2A (which is equivalent to decimal 42) by converting the substring "hello" after the delimiter character.