Java Utililty Methods Text File Read Line

List of utility methods to do Text File Read Line

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Description

The list of methods to do Text File Read Line are organized into topic(s).

Method

String[]readLines(String filename)
Read all lines of a file. 
return readLines(new File(filename));
ListreadLines(String filename)
Returns a list of text lines from the specified file. 
List<String> lines = new ArrayList<String>();
BufferedReader in = new BufferedReader(new FileReader(filename));
String line;
while ((line = in.readLine()) != null) {
    lines.add(line);
in.close();
return lines;
...
String[]readLines(String filename)
read Lines 
FileReader fileReader = new FileReader(filename);
BufferedReader bufferedReader = new BufferedReader(fileReader);
List<String> lines = new ArrayList<String>();
String line = null;
while ((line = bufferedReader.readLine()) != null) {
    lines.add(line);
bufferedReader.close();
...
String[]readLines(String fileName)
read Lines 
return readLines(new FileInputStream(fileName));
String[]readLines(String filename)
read Lines 
List<String> result = new ArrayList<String>();
BufferedReader br = new BufferedReader(new FileReader(filename));
String strLine;
while ((strLine = br.readLine()) != null) {
    result.add(strLine);
br.close();
return result.toArray(new String[result.size()]);
...
ListreadLines(String fileName)
read Lines 
List<String> lines = new ArrayList<String>();
try (InputStream in = new FileInputStream(fileName);
        BufferedReader br = new BufferedReader(new InputStreamReader(in))) {
    String line = null;
    while ((line = br.readLine()) != null) {
        lines.add(line);
return lines;
ListreadLines(String filename)
Read the lines of a file into a list of strings, with each line represented as its own string. 
List<String> lines = Lists.newArrayList();
try {
    BufferedReader in = new BufferedReader(new FileReader(filename));
    String line;
    while ((line = in.readLine()) != null) {
        if (line.trim().length() > 0) {
            lines.add(line);
    in.close();
} catch (IOException e) {
    throw new RuntimeException(e);
return lines;
ArrayListreadLines(String fileName)
read Lines 
BufferedReader reader;
try {
    reader = openReader(fileName);
} catch (IOException e1) {
    System.out.println("Couldn't read file " + fileName);
    return null;
String line;
...
ListreadLines(String filename)
Just return each line of the file as String 
ArrayList<String> retval = new ArrayList<String>();
try {
    BufferedReader in = new BufferedReader(new FileReader(filename));
    String curLine = in.readLine();
    while (curLine != null) {
        retval.add(curLine.trim());
        curLine = in.readLine();
    return retval;
} catch (IOException ioe) {
    System.out.println(String.format("Bad file(name): %s\n", ioe.toString()));
    return null;
LinkedListreadLines(String filename)
read Lines 
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(filename), ENCODING));
LinkedList<String> lines = new LinkedList<String>();
while (true) {
    String line = reader.readLine();
    if (line == null)
        break;
    if (line.length() == 0)
        continue;
...