Java Stream GroupingBy: Efficiently Group Objects by Image Name

The code is using streams to perform a grouping operation on a list of objects of type "OilObject" based on their "imageName" property. \n\nIn the first line, the "stream()" method is called on the "slot" list to convert it into a stream. Then, the "collect()" method is called with the "Collectors.groupingBy()" collector. This collector groups the objects based on the "imageName" property and creates a "Map" where the keys are the distinct "imageName" values and the values are lists of "OilObject" objects with the same "imageName".\n\nUsing streams and the "groupingBy()" collector allows for a concise and efficient way to group objects based on a specific property. It eliminates the need for manual iteration and conditionals to perform the grouping operation.