Robin Topper questions

Robin Topper answers

• Java Stream: Grouping and counting by multiple fields
• Split a list into sublists based on a condition with Stream api
• Stream filter/reduction on duplicated entries
• Java - List<Integer> sort, comparator and overflow
• How to calculate time difference between two dates using LocalDateTime in Java 8?
• Convert an loop (while and for) to stream
• DateTimeParseException: Text could not be parsed: Unable to obtain LocalDateTime from TemporalAccessor
• Collectors.toMap of Map<String, List<Object>> are not able to resolve