Android Utililty Methods File Read

File f = new File(filePath);
if (!f.canRead())
    throw new IOException();
BufferedReader in = new BufferedReader(new FileReader(filePath));
String template = "";
String line;
while ((line = in.readLine()) != null) {
    template += line;
...

String text = null;
InputStream is = null;
if (null != file) {
    try {
        is = new FileInputStream(file);
        text = readTextInputStream(is);
        ;
    } finally {
...

char c[] = null;
BufferedReader reader = null;
try {
    File f = new File(str);
    reader = new BufferedReader(new InputStreamReader(
            new FileInputStream(f)));
    int len = (int) f.length();
    c = new char[len];
...

FileInputStream fin = null;
byte fileContent[] = null;
try {
    fin = new FileInputStream(file);
    fileContent = new byte[(int) file.length()];
    fin.read(fileContent);
} catch (FileNotFoundException e) {
} catch (IOException ioe) {
...

InputStream iS;
iS = resources.getAssets().open(fileName);
byte[] buffer = new byte[iS.available()];
iS.read(buffer);
ByteArrayOutputStream oS = new ByteArrayOutputStream();
oS.write(buffer);
oS.close();
iS.close();
...

byte[] result = null;
try {
    File file = new File(pathToFile);
    if (file.length() <= Integer.MAX_VALUE) {
        result = new byte[(int) file.length()];
        @SuppressWarnings("resource")
        RandomAccessFile raf = new RandomAccessFile(file, "r");
        raf.readFully(result);
...