Java Utililty Methods Text File Read by Encode

StringBuffer sb = new StringBuffer();
try {
    BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file), charset));
    String line = br.readLine();
    while (line != null) {
        sb.append(line).append("\n\r");
        line = br.readLine();
    br.close();
    return sb.toString();
} catch (Exception e) {
    return null;

if (file == null)
    return null;
BufferedReader bf = new BufferedReader(new InputStreamReader(new FileInputStream(file), charsetName));
String content;
StringBuilder sb = new StringBuilder();
while (true) {
    content = bf.readLine();
    if (content == null) {
...

BufferedReader br = new BufferedReader(new InputStreamReader(fis, encoding));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
    sb.append(line);
    sb.append('\n');
return sb.toString();
...

BufferedReader buff = new BufferedReader(new InputStreamReader(is, encoding));
String content = getContent(buff);
buff.close();
return content;

FileInputStream fis = new FileInputStream(file);
return getStreamAsString(fis, encoding);

return new String(getFileContentAsBytes(file), encoding);

FileInputStream is = new FileInputStream(file);
return new String(getStreamContentAsBytes(is), encoding);

StringBuilder text = new StringBuilder();
String newLine = System.getProperty("line.separator");
try (Scanner scanner = new Scanner(new FileInputStream(filePath), fileEncoding)) {
    boolean isFirstLine = true;
    while (scanner.hasNextLine()) {
        if (isFirstLine) {
            text.append(scanner.nextLine());
            isFirstLine = false;
...

StringBuilder contents = new StringBuilder();
char[] buffer = new char[2048];
int count;
try {
    try (Reader in = new InputStreamReader(stream, encoding)) {
        while ((count = in.read(buffer)) > 0) {
            contents.append(buffer, 0, count);
} catch (IOException ioe) {
    return null;
return contents.toString();

return getContents(new FileInputStream(filename), encoding);