Read from classpath

As you can pass any java.io.Reader to the CsvReader class, you can read CSV data from any source that provides a Reader or can be converted to a Reader. This includes reading from the classpath.

Example

In the following example, a CSV file is read from the classpath.

ExampleCsvReaderWithClasspathInput.java

package example;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.StandardCharsets;

import de.siegmar.fastcsv.reader.CsvReader;
import de.siegmar.fastcsv.reader.CsvRecord;

/**
 * Example for reading CSV data from a file in the classpath.
 */
public class ExampleCsvReaderWithClasspathInput {

    public static void main(final String[] args) throws IOException {
        try (CsvReader<CsvRecord> csv = CsvReader.builder().ofCsvRecord(readFromClasspath("/example.csv"))) {
            csv.forEach(System.out::println);
        }
    }

    static Reader readFromClasspath(final String name) throws FileNotFoundException {
        final var in = ExampleCsvReaderWithClasspathInput.class.getResourceAsStream(name);
        if (in == null) {
            throw new FileNotFoundException("Resource not found on classpath: " + name);
        }
        return new InputStreamReader(in, StandardCharsets.UTF_8);
    }

}

You also find this source code example in the FastCSV GitHub repository.