java

• class is the fundamental unit in java
  • classes are located and loaded at runtime as needed`
• use double quotes always
• add members to a List

private List<Product> products = new ArrayList<Product>();
products.addAll(List.of(
            new Product("1", "potato"),
            new Product("2", "onions"),
            new Product("3", "chips"),
            new Product("4", "fruits")
        ));

• addAll function can add and use it with List.of
• [[Instant]] seems to be a good util provided natively with java.time package
• AtomicLong gives a thread safe way to generate unique ids and is present in the java.util.concurrent package