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Category: Questions

Gson returns Json object with `=` instead of `:` [closed]

Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 1 year ago. Improve this question Here is my code: The assertion fails because: Why does my expected object

How to map a CSV to Object with List using CsvMapper?

I’m trying to map a Csv file to an Object what instances List of Objects using CsvMapper, is that even possible? Example: Content of Csv file (without header): Field 1: name Field 2: gender Field 3: hobby (List comma separated) Field 4: relation Example class: Thank you in advance. Answer I found myself a solution: I used common-cdv (apache) as

Divide a list into fixed number of list in java

I am trying to figure out an efficient way to divide a list into a fixed number of list Example 1 Input – [1,2,3,4,5,6,7,8] Number of lists – 4 Output- [1,2], [3,4], [5,6],[7,8] Example 2 Input – [1,2,3,4,5,6,7,8,9,10] Number of lists – 4 Output- [1,2,3], [4,5,6], [7,8],[9,10] Not necessarily the order of elements should be fixed I tried few examples

Kotlin to Java migration

I am unable to translate(from Kotlin to Java) or understand this statement service.connectionListener = { addConnection(it) } which is found in the inner class of the following file: I was unable to translate the above statement (commented out): Answer This code in Kotlin: Corresponds to this code in Java: It is assumed that Service class is written in Kotlin and

Get the last element of each entry in a LinkedHashMap?

I have a map and I want to extract the last value for each key from that map, but I can’t get it: Extract: i.e. the last NUM entries for each key Answer You can use reduce to extract the last value from Map<String,String> and then collect them using toMap into LinkedHashMap to save the insertion order But as a

How to use getContentPane in independent class?

I want to set background color by key pressed event. This is my code (using independent class) But I can’t use getContentPane with an error “Cannot make a static reference to the non-static method getContentPane() from the type JFrame” How can I solve this problem? Answer Your KeyCharEx.getContentPane() is trying to call a static method in the KeyCharEx class that

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