I am trying to iterate through a CSV file in Java. It iterates through the entire file, but will get to the end of the file and try to read the next blank line and throw an error. My code is below. Like I typed, this works fine until it gets to the end of the file. When it gets
Tag: csv
OpenCSV Avoid using FileWriter and return InputStream
I am using OpenCsv and the new CSVWriter() method takes a Writer as an argument. What I am trying to achieve is that to avoid writing to the file system and instead return an InputStream. I am not sure how to go about this. Not very familiar with Streams also I am using JAVA 7. Is it possible that I
Apache commons csv skip lines
How to skip lines in input file with apache commons csv. In my file first few lines are garbage useful meta-information like date, etc. Can’t find any options for this. Answer Use FileReader.readLine() before starting the for-loop. Your example:
Java – Write hashmap to a csv file
I have a hashmap with a String key and String value. It contains a large number of keys and their respective values. For example: I would like to write this hashmap to a csv file such that my csv file contains rows as below: I tried the following example here using the supercsv library: http://javafascination.blogspot.com/2009/07/csv-write-using-java.html. However, in this example, you
Reading line breaks in CSV which are quoted in the file in FlatfileItemReader of spring batch
I am trying to parse a CSV file with FlatFileItemReader. This CSV contains some quoted newline characters as shown below. But this parsing is failing with required fields are 2 but actual is 1. What I am missing in my FlatFileReader configuration? Answer out of the box the FlatFileItemReader uses a SimpleRecordSeparatorPolicy, for your usecase commented part goes over 2
How to isolate an instance of a class with SuperCsv?
Actually I have a class ArticleModele where I store the content of the columns of the .csv, but I don’t know how to access to a particular instance of the class which corresponds to a particular row in the .csv. Here is my code: And here is the class: Answer The code returns with last result, as it overwrites articleModele.
How to sort data in a CSV file using a particular field in Java?
I want to read a CSV file in Java and sort it using a particular column. My CSV file looks like this: Considering I want to sort it using the third column, my output should look like: After some research on what data structure to use to hold the data of CSV, people here suggested to use Map data structure
Opening CSV with UTF-8 BOM via Excel
I create csv file with data by the means of java. And I faced the following well-known issue: the letters in Portuguese were displayed by the wrong way in Excel (when opening by double click). I solved this by UTF-16LE+BOM, but excel started to recognize tabs as columns separators instead of commas. So I looked up for another solution and
Open CSV to export resultset to string type
I want to export the result set of the SQL query to a CSV file. I am using opencsv to export to CSV file. I am using below code to achieve it. But the problem I face is, it automatically exports to the datatype of the database column which is from resultset. Example: if I a column with datatype as
Skip first line while reading CSV file in Java
I am writing a parser code to read a .csv file and parse it to XML. This is the code I have and it works, except I would like it to skip the first line in the file. So I decided to set up a HashMap but it doesn’t seem to work: This is a snippet of the main part