Java Utililty Methods File Content Read

InputStream in = null;
byte[] content = new byte[(int) file.length()];
in = new FileInputStream(file);
int i = 0;
int tmp = 0;
while ((tmp = in.read()) != -1) {
    content[i] = (byte) tmp;
    i++;
...

FileReader reader = new FileReader(file);
char[] content = new char[(int) file.length()];
reader.read(content, 0, content.length);
return new String(content);

FileReader fileReader = new FileReader(file);
char[] ioBuffer = new char[1024];
StringBuffer content = new StringBuffer();
int number = -1;
while ((number = fileReader.read(ioBuffer)) != -1) {
    content.append(ioBuffer, 0, number);
return content.toString();
...

Writer swriter = null;
Reader reader = null;
try {
    reader = new FileReader(file);
    swriter = new StringWriter();
    int len = 0;
    char[] buffer = new char[1024];
    while ((len = reader.read(buffer)) > 0) {
...

BufferedReader br = new BufferedReader(new FileReader(file));
String content = "";
String strLine;
while ((strLine = br.readLine()) != null) {
    content += strLine + "\n";
return content;

Scanner scanner = null;
String content = null;
Exception reThrow = null;
if (file != null && file.length() > 0) {
    try {
        scanner = new Scanner(file);
        content = scanner.useDelimiter("\\A").next();
    } catch (Exception e) {
...

File file = new File(filename);
if (!file.exists()) {
    return null;
StringBuffer result = new StringBuffer();
FileInputStream fis = new FileInputStream(file);
InputStreamReader reader = new InputStreamReader(fis, "UTF-8");
LineNumberReader lineReader = new LineNumberReader(reader);
...

String content = null;
File file = new File(filename);
if (!file.exists()) {
    return null;
try {
    FileReader reader = new FileReader(file);
    char[] chars = new char[(int) file.length()];
...

File file = new File(fileName);
if (!file.exists() || !file.isFile() || !file.canRead()) {
    return null;
StringBuffer fileData = new StringBuffer();
BufferedReader reader = new BufferedReader(new FileReader(file));
char[] buf = new char[1024];
int numRead = 0;
...

File file = new File(filename);
if (!file.exists()) {
    return null;
FileInputStream fis = new FileInputStream(file);
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buff = new byte[1024];
int len = 0;
...