Java Utililty Methods CSV from

List of utility methods to do CSV from

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Description

The list of methods to do CSV from are organized into topic(s).

Method

void addAllFromCSV(List list, String csv)
add All From CSV

csv = csv.trim();
if (csv.isEmpty()) {
 return;
String[] values = csv.split(",");
for (String s : values) {
 list.add(s.trim());

String convertListToCSVString(List itemsList)
convert List To CSV String

StringBuilder csvString = new StringBuilder();
if (itemsList != null && !itemsList.isEmpty()) {
 for (Long item : itemsList) {
 if (csvString.length() > 0) {
 csvString.append(COMMA_SEPARATOR);
 csvString.append(item.toString());
 } else {
 csvString.append(item.toString());
...

String convertListToCSVString(List list)
convert List To CSV String

StringBuilder result = new StringBuilder();
String comma = "";
for (String element : list) {
 result.append(comma);
 result.append(element);
 comma = ",";
return result.toString();
...

String convertStringListToCSV(List inputStringList)
Utility to convert List of Strings to CSV string.

if (inputStringList == null || inputStringList.size() == 0) {
 return null;
StringBuilder sb = new StringBuilder();
for (String inputString : inputStringList) {
 sb.append(inputString).append(',');
sb.deleteCharAt(sb.length() - 1);
...

String convertStringListToCSV(List source)
convert String List To CSV

String finalString = "";
if (source != null && !source.isEmpty()) {
 for (String s : source) {
 if (s != null) {
 finalString = finalString.isEmpty() ? finalString + getValidCsvValue(s)
 : finalString + "," + getValidCsvValue(s);
return finalString;

int countMaxColumnSizeByArray(List csvs)
count Max Column Size By Array

int max = 0;
for (String[] csv : csvs) {
 if (csv.length > max) {
 max = csv.length;
return max;

List csv2list(String csvString)
Returns a list of String literals from a comma-separated value String.

List<String> outList = new ArrayList<String>();
for (String element : csvString.split(COMMA)) {
 if (!element.isEmpty()) {
 outList.add(element);
return outList;

String[] csvList(String _text, Integer[] _idx_ret)
Kommaseparierte Werteliste in String[] umwandeln.

List<String> list = new ArrayList<String>();
int idx = 0;
boolean bCont = true;
int idxr;
do {
 idxr = _text.indexOf(',', idx);
 if (idxr == -1) {
 idxr = _text.length();
...

List csvTagsToList(String tags)
csv Tags To List

List<String> tagsList = new ArrayList<String>();
if (tags != null) {
 String[] tokens = tags.split(",");
 for (int i = 0; i < tokens.length; i++) {
 tagsList.add(tokens[i].trim());
return tagsList;
...

List csvToList(String csv)
converts a string with comma separated values to a List of Strings

if (csv == null) {
 return new ArrayList<String>();
return Arrays.asList(csv.split(CSV_SEPARATOR.toString(), -1));