From wikipedia
- Manufacturer, uses tools and labour to make things for sale
- Processor (manufacturing), converts a product from one form to another
- Wholesaler, sells goods or merchandise to retailers
- Merchant, a professional dealing with trade
From java definition
Represents a supplier of results. There is no requirement that a new or distinct result be returned each time the supplier is invoked.
Here are some test cases.
Gets a result.
@Test
public void testGetCurrentDate()
{
//when
Supplier<LocalDateTime> dateTimeSupplier = () -> LocalDateTime.now();
//verify
Assertions.assertNotNull(dateTimeSupplier.get());
}
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