Nowhere Man questions

Nowhere Man answers

• This was written in java 12 but if I run it on java 15, it throws an exception error [duplicate]
• JSON parse error: Cannot deserialize value of type `java.time.LocalDateTime` from String
• Sorting expression in spring data JPA
• Using a triple nested for loop to increase the length and count of the rows printed
• Get substring between "first two" occurrences of a character
• How to check two argument in java is either one of them null or both
• How to add values in duplicated key Map in Java 8
• Combining two lists to make a unique list (based on certain field logic)