The program first reads integer purchaseCount from input, representing the number of pairs of inputs to be read. Each pair has a string and an integer, representing the purchase's food and quantity, respectively. One Purchase object is created for each pair and added to ArrayList purchaseList. If a Purchase object's quantity is between $4$ and $20,$ both inclusive, call the Purchase object's print$()$ method.

Ex: If the input is:

$4$

daikon $4$ truffle $30$ celery $20$ plantain $21$

then the output is:

Purchase: daikon, Quantity: $4$

Purchase: celery, Quantity: $20$