Java Utililty Methods InputStreamReader Read

final InputStream input_stream = new FileInputStream(file);
final BufferedReader buffered_reader = new BufferedReader(new InputStreamReader(input_stream));
final List<Character> character_list = new ArrayList<>();
String line;
try {
    while ((line = buffered_reader.readLine()) != null) {
        if (fix)
            line = line.replace('\t', ' ');
...

StringBuilder sb = new StringBuilder();
FileInputStream in = null;
BufferedReader br = null;
try {
    in = new FileInputStream(file);
    br = new BufferedReader(new InputStreamReader(in));
    String data = null;
    while ((data = br.readLine()) != null) {
...

FileInputStream fstream = null;
List<String> contents = null;
try {
    fstream = new FileInputStream(directoryLocation.concat(fileName));
    DataInputStream in = new DataInputStream(fstream);
    BufferedReader br = new BufferedReader(new InputStreamReader(in));
    String strLine;
    contents = new ArrayList<String>();
...

InputStream is = ClassLoader.getSystemResourceAsStream(file);
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String content = "";
String line;
try {
    while ((line = br.readLine()) != null)
        content = content + line + "\n";
} catch (IOException e) {
...

FileInputStream fis = null;
BufferedReader br = null;
StringBuffer sb = new StringBuffer();
String temp = "";
try {
    fis = new FileInputStream(filepath);
    br = new BufferedReader(new InputStreamReader(fis, "utf-8"));
    while ((temp = br.readLine()) != null) {
...

StringBuffer fileData = new StringBuffer(1000);
BufferedReader reader = new BufferedReader(new InputStreamReader(refClass.getResourceAsStream(filePath)));
char[] buf = new char[1024];
int numRead = 0;
while ((numRead = reader.read(buf)) != -1) {
    String readData = String.valueOf(buf, 0, numRead);
    fileData.append(readData);
    buf = new char[1024];
...

try {
    InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(filename);
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    StringBuilder stringBuilder = new StringBuilder();
    String line;
    while ((line = br.readLine()) != null) {
        stringBuilder.append(line);
    br.close();
    return stringBuilder.toString();
} catch (Exception e) {
    e.printStackTrace();
return null;

List<String> lines = new ArrayList<String>();
try {
    FileInputStream fis = new FileInputStream(file);
    BufferedReader read = new BufferedReader(new InputStreamReader(fis));
    String line;
    while ((line = read.readLine()) != null) {
        lines.add(line);
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
return lines;

List<String> lines = readFileIntoLines(file);
List<Long> dest = new ArrayList<Long>();
for (String s : lines) {
    dest.add(Long.parseLong(s));
return dest;

return new Iterator<String>() {
    InputStream fstream = new FileInputStream(filePath);
        if (filePath.getName().endsWith(".gz")) {
            fstream = new GZIPInputStream(fstream);
    DataInputStream in = new DataInputStream(fstream);
...