Java Utililty Methods File Read

StringBuffer strBuffer = new StringBuffer();
BufferedReader in = new BufferedReader(new FileReader(file), bufferSize);
String tempStr = in.readLine();
strBuffer.append(tempStr);
while ((tempStr = in.readLine()) != null) {
    strBuffer.append("\n").append(tempStr);
in.close();
...

String content = new String();
FileReader fileReader = null;
try {
    fileReader = new FileReader(pFile);
} catch (FileNotFoundException e) {
    e.printStackTrace();
    return null;
BufferedReader bufferedReader = new BufferedReader(fileReader);
String line = null;
try {
    while ((line = bufferedReader.readLine()) != null) {
        content += line;
} catch (IOException e) {
    e.printStackTrace();
    return null;
try {
    fileReader.close();
} catch (IOException e) {
    e.printStackTrace();
return content;

final ByteArrayOutputStream out = new ByteArrayOutputStream();
final BufferedInputStream in = new BufferedInputStream(new FileInputStream(f));
final byte[] buffer = new byte[40960];
while (in.available() > 0) {
    final int s = in.read(buffer);
    out.write(buffer, 0, s);
in.close();
...

try (BufferedReader br = new BufferedReader(new FileReader(file))) {
    String line = null;
    final StringBuilder sb = new StringBuilder();
    while ((line = br.readLine()) != null) {
        if (Thread.currentThread().isInterrupted()) {
            throw new InterruptedException();
        sb.append(line);
...

if ((srcFile != null) && srcFile.exists() && srcFile.isFile()) {
    BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(srcFile)));
    StringBuffer contentOfFile = new StringBuffer();
    String line;
    while ((line = br.readLine()) != null) {
        contentOfFile.append(line);
    return contentOfFile.toString();
...

final StringBuilder sb = new StringBuilder();
BufferedReader br = null;
try {
    final InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
    if (is == null)
        throw new Exception("File '" + fileName + "' not found!");
    br = new BufferedReader(new InputStreamReader(is, "ISO-8859-15"));
    String nextLine = "";
...

BufferedReader reader = null;
try {
    final int size = 1024;
    reader = new BufferedReader(new FileReader(p_filename), size);
    char[] buffer = new char[1];
    final StringBuffer content = new StringBuffer();
    while (reader.read(buffer) != -1) {
        content.append(buffer);
...

FileInputStream fis = new FileInputStream(aFile);
int x = fis.available();
byte b[] = new byte[x];
fis.read(b);
return new String(b);

return Arrays.asList(getFileContent(filePath).split("\\n"));

File file = new File(filePath);
if (!file.exists() || !file.isFile()) {
    return null;
List<String> content = new ArrayList<String>();
try {
    FileInputStream fileInputStream = new FileInputStream(file);
    InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
...