I downloaded the data and read by StringBuilder and achieved this result (The content of my StringBuilder) Is there any method, library, or someone else has a solution for specifying semicolons between data? Of course, except at the end of the line. I will be grateful for your help 🙂 What I’d like to ac…
Tag: csv
Using CSVWriter to write a string array – some with quotes and some without
I see some other questions about CSVWriter writing to files and quotes. But nothing as specific as my issue. I want to print something like: abc,def,ghi,”jkl”,mno,pqr When I just write: what gets printed out is: “abc”,”def”,”ghi”,”jkl”,”mnoR…
Assign unique value to field in duplicate records group during groupingBy
According to the reply provided by devReddit here, I did grouping of CSV records (same client names) of following test file (fake data): CSV test file Client Entity Program Final Result (Grouped by Center) What I Need I need to assign a unique value to each group of repeated records, starting over each time c…
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…
How to avoid backslash before comma in CSVFormat
I am creating a CSV file using CSVFormat in java, the problem i am facing in both header and values is whenever the string is long and there is a comma the api is inserting a before the comma always. As a result the header is not forming correctly and the values in the csv file is taking next
Appending column at the end of a csv file java
I have a csv file and I have some data in it and I want to append a column in it. e.g: I want to append that Marks Column through code. The problem I’m getting is The data is getting written 2 times and also the on the first column (Except the first one). How can I prevent it from
Unable to Parse header from github CSV URL using Apache Commons
I’m trying to access the header values for each record which is present in CSV file url from github using Apache commons csv library. This is my code: When i run the application i’m getting this error: Answer You should not read line by line if you want to read first line as header because the Apa…
How can i get specific column from csv file and put that items of column into jComboBox using java?
part of my code is here: i am pretty novice in Java and can’t do the thing that i want. for example i wanna get all items from 2. column and set them into ComboBox. I tried many things, searched many sites but failed. If somebody can help me i’d be much appreciated. here you can see my output: Ans…
while Converting Object[] to String[] iam getting java.lang.ArrayStoreException for the following code
Answer This happens due to the following line: The method Javadoc states that the method throws an ArrayStoreException if an element copied from original is not of a runtime type that can be stored in an array of class newType. So if the Object[] array contains an element that is not a String, this exception …
Add data to specific record in CSV file
I have a record in a CSV file and i am trying to add some extra info (a name) to the same specific record with the following code but it does not work. There is no error shown but the info i am trying to add just does not appear. What am i missing ? Answer Here the requirement is