Java Utililty Methods BufferedReader Read

Set<String> list = new HashSet<String>();
File file = new File(listName);
if (file.exists()) {
    try (BufferedReader br = new BufferedReader(new FileReader(file))) {
        for (String line; (line = br.readLine()) != null;)
            list.add(line.trim().toLowerCase());
return list;

String result = "";
try {
    BufferedReader in = new BufferedReader(new FileReader(filename));
    String str;
    if (defaultitem != null) {
        result = result + linePrefix + defaultitem + lineSuffix;
    while ((str = in.readLine()) != null) {
...

try {
    int dim = Integer.parseInt(in.readLine());
    String[] vals = in.readLine().split("\\s+");
    long[] ret = new long[dim];
    for (int i = 0; i < ret.length; i++) {
        ret[i] = Long.parseLong(vals[i]);
    return ret;
...

StringBuilder metadataBuilder = new StringBuilder();
BufferedReader reader = new BufferedReader(new FileReader(file));
String line;
while ((line = reader.readLine()) != null) {
    metadataBuilder.append(line).append('\n');
reader.close();
Gson gson = new Gson();
...

List<String> list = new ArrayList<String>();
FileReader fr;
try {
    fr = new FileReader(metaFile);
    BufferedReader reader = new BufferedReader(fr);
    String s = reader.readLine();
    while (s != null) {
        list.add(s);
...

BufferedReader br = new BufferedReader(in);
String line;
while ((line = br.readLine()) != null) {
    if (line.startsWith("#")) {
        continue;
    if (line.trim().length() == 0) {
        continue;
...

BufferedReader reader = null;
try {
    reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName), "UTF-8"));
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
} catch (FileNotFoundException e) {
    e.printStackTrace();
String line = null;
try {
    while ((line = reader.readLine()) != null) {
        line = line.trim();
        if (line.length() == 0 || line.charAt(0) == '#')
            continue;
        String[] halves = line.split("=");
        String mm = halves[0].trim();
        String roman = halves[1].trim();
        dictionary.put(mm, roman);
        if (modelPairs != null) {
            if (!modelPairs.containsKey(roman))
                modelPairs.put(roman, new ArrayList<String>());
            modelPairs.get(roman).add(mm);
} catch (IOException ex) {
    ex.printStackTrace();
try {
    reader.close();
} catch (IOException ex) {
    ex.printStackTrace();

Map<String, List<String>> rtrn = new HashMap<String, List<String>>();
String line;
BufferedReader br = new BufferedReader(new FileReader(mapName));
while ((line = br.readLine()) != null) {
    String[] lineSplit = line.split("\t");
    String n1 = lineSplit[0];
    String n2 = lineSplit[1];
    if (reverseMap) {
...

File file = new File(fileName);
FileReader fileReader = new FileReader(file);
BufferedReader bufferedReader = new BufferedReader(fileReader);
String line;
try {
    if ((line = bufferedReader.readLine()) != null) {
        String[] tmp_res = line.split(" ");
        int[] res = new int[tmp_res.length];
...

BufferedReader reader = new BufferedReader(new FileReader(fileName));
Map<Integer, Integer> result = new HashMap<Integer, Integer>();
String line;
while ((line = reader.readLine()) != null) {
    String[] tokens = line.split(" ");
    assert (tokens.length == 2);
    int lit = Integer.parseInt(tokens[0]);
    int partition = Integer.parseInt(tokens[1]);
...