Java Utililty Methods BufferedReader Read

Set<String> blackList = new HashSet<String>();
try (BufferedReader br = new BufferedReader(new FileReader(new File(blackListPath)))) {
    for (String line; (line = br.readLine()) != null;) {
        String s = line.trim().toLowerCase();
        blackList.add(s);
return blackList;
...

FileInputStream fi = new FileInputStream(file_path);
InputStreamReader in = new InputStreamReader(fi, "big5");
BufferedReader br = new BufferedReader(in);
HashSet<String> result = new HashSet<String>();
String s = null;
while ((s = br.readLine()) != null) {
    s = s.substring(s.indexOf(":") + 1, s.length());
    String[] tokens = s.split(",");
...

BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));
return getDataFromReaderUsingSplit(br);

char[] data = null;
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(f), enc));
char[] tmp = new char[4096];
int num = 0;
try {
    while ((num = br.read(tmp)) > 0) {
        if (data == null) {
            data = new char[num];
...

Map<String, String> commonMisspellingsMap = null;
if (commonMisspellingsFileLocation != null) {
    commonMisspellingsMap = new HashMap<String, String>();
    BufferedReader br = null;
    FileReader fr = null;
    try {
        fr = new FileReader(commonMisspellingsFileLocation);
        br = new BufferedReader(fr);
...

BufferedReader fread = null;
try {
    fread = new BufferedReader(new InputStreamReader(new FileInputStream(filename), "UTF-8"));
    String line;
    while ((line = fread.readLine()) != null) {
        if (line.startsWith("#"))
            continue;
        if (line.startsWith(key + "="))
...

Map<String, String> data = new HashMap<String, String>();
try (BufferedReader br = new BufferedReader(new FileReader(conf))) {
    String line;
    while ((line = br.readLine()) != null) {
        if (line.startsWith("#")) {
            continue;
        String[] args = line.split("=");
...

BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(configFile)));
try {
    String line;
    while ((line = br.readLine()) != null) {
        String[] strArray = line.split("=");
        if (strArray.length != 2)
            continue;
        String prop = strArray[0];
...

if (file == null) {
    throw new IllegalArgumentException();
if (!file.exists() || file.isDirectory()) {
    return null;
BufferedReader br = null;
try {
...

BufferedReader reader = null;
String login = null;
String password = null;
String token = null;
try {
    reader = new BufferedReader(new FileReader(credentials));
    login = readLine(reader);
    password = readLine(reader);
...