Java-CSV-Writer

An opinionated CSV Writer

Overview

A micro-library which converts Java List<List<String>> to CSV.

How to use

This example shows how Employee data (as Collection of Employee Objects) is converted to CSV format.

import com.taragana.csv.CSVWriter;

...

List<List<String>> data = new ArrayList<>(); // CSV data holder
List<String> employee = new ArrayList<>();

// CSV headers added
employee.add("ID");
employee.add("Name");
employee.add("Mobile");
employee.add("Email");
employee.add("Gender");

result.add(employee); // Adding header

for(Employee e : employeeData) { // Individual Employee data added 
    employee = new ArrayList<>();        
    employee.add("" + e.id);
    employee.add(e.name);
    employee.add(e.mobile);
    employee.add(e.email);
    employee.add(e.gender);
        
    result.add(employee);
}
String csv = CSVWriter.encode(data)); // This method `encode` is all you need to know!

A simple example is in CSVWriterTest (written in Groovy).

List<String[]> lines = Arrays.asList(["India"], ["is"], ["great!"]);
assert CSVWriter.encode(lines).equals("\"" + lines.get(0)[0] + "\"\n\"" + lines.get(1)[0] + "\"\n\"" + lines.get(2)[0] + "\"");

You can also encode individual lines with encodeLine and cell / field with encodeField

Library Code Reports

Generate the reports with: ./gradlew check

• Test Report
• SpotBugs Report
  • Main
  • Test

Benefits

• Very small (17 logical lines of code, 62 in total including comments etc. )
• Single-purpose library without any bloat.
• Zero external dependencies
• Well tested (comes with unit tests)

Java-CSV-Writer is developed by Angsuman Chakraborty at Taragana Inc.