CsvParseMithunJavaVersion.java

amitsen01ei

Feb 17th, 2024

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import java.io.*;
import java.time.*;
import java.util.*;
public class CsvParseMithun {
public static void main(String[] args) {
var startTime = Instant.now();
String filePath = "/Users/amitsen01ei/Downloads/uuids-medium.csv";
var frequencyMap = new HashMap<Character, Integer>();
try (var reader = new BufferedReader(new FileReader(filePath))) {
String line;
while ((line = reader.readLine()) != null) {
String[] fields = line.split(",");
for (var field : fields) {
for (var ch : field.toCharArray()) {
frequencyMap.merge(ch, 1, Integer::sum);
}
}
}
} catch (IOException e) {
System.err.println(e.getMessage());
}
frequencyMap.forEach((key, value) -> System.out.println(STR."\{key} = \{value}"));
long executionTime = Duration.between(startTime, Instant.now()).getSeconds();
System.out.println(STR."Execution Time: \{executionTime} s");
}
}

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