Java Utililty Methods InputStreamReader Read

return readFile(new InputStreamReader(new FileInputStream(file), "UTF-8"));

return readFile(file, null);

FileInputStream in = new FileInputStream(file);
InputStreamReader r1 = new InputStreamReader(in, charset);
BufferedReader r2 = new BufferedReader(r1);
StringBuffer sb = new StringBuffer();
while (true) {
    String s = r2.readLine();
    if (s == null)
        break;
...

File f = new File(file);
return readFile(f, lineBreak);

List<String> retList = new ArrayList<String>();
try {
    File inputFlie = new File(fileFullPath);
    InputStreamReader reader = new InputStreamReader(new FileInputStream(inputFlie));
    BufferedReader br = new BufferedReader(reader);
    String line = "";
    line = br.readLine();
    while (line != null) {
...

FileInputStream in = null;
try {
    in = new FileInputStream(fileName);
    return read(in);
} catch (Exception e) {
    throw new RuntimeException(e);
} finally {
    close(in);
...

File in = new File(filename);
try {
    Reader fr = new InputStreamReader(new FileInputStream(in), "UTF-8");
    char[] cbuf = new char[(int) in.length()];
    try {
        fr.read(cbuf);
        return String.valueOf(cbuf);
    } catch (Exception e) {
...

return readFile(fileName, null);

BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));
StringBuffer result = new StringBuffer();
String tmp = reader.readLine();
while (tmp != null) {
    result.append(tmp + "\n");
    tmp = reader.readLine();
reader.close();
...

java.io.BufferedReader br = new java.io.BufferedReader(new java.io.InputStreamReader(
        Thread.currentThread().getContextClassLoader().getResourceAsStream(filename)));
StringBuffer sb = new StringBuffer();
try {
    String newline = System.getProperty("line.separator");
    String tmp = null;
    while ((tmp = br.readLine()) != null) {
        sb.append(tmp);
...