Android Utililty Methods File Read

List of utility methods to do File Read

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Description

The list of methods to do File Read are organized into topic(s).

Method

Stringread(File path, int i)
Read file in line i 
try {
    if (i == 1) {
        return new Scanner(path).nextLine();
    } else {
        for (int j = 1; j < i; j++) {
            new Scanner(path).nextLine();
        return new Scanner(path).nextLine();
...
StringreadFile(File file)
read File 
StringBuffer fileData = new StringBuffer(1000);
BufferedReader reader = new BufferedReader(new FileReader(file));
char[] buf = new char[1024];
int numRead = 0;
while ((numRead = reader.read(buf)) != -1) {
    String readData = String.valueOf(buf, 0, numRead);
    fileData.append(readData);
    buf = new char[1024];
...
byte[]readFile(String filepath)
read File 
byte[] result = null;
try {
    File file = new File(filepath);
    if (file.length() <= Integer.MAX_VALUE) {
        result = new byte[(int) file.length()];
        RandomAccessFile raf = new RandomAccessFile(file, "r");
        raf.readFully(result);
} catch (FileNotFoundException e) {
} catch (IOException e) {
return result;
StringreadFileAsString(String filePath)
read File As String 
BufferedReader reader = new BufferedReader(new FileReader(filePath));
String line;
String results = "";
while ((line = reader.readLine()) != null) {
    results += line;
reader.close();
return results;
...
byte[]readFileToByte(File file)
read File To Byte 
ByteArrayOutputStream bos = new ByteArrayOutputStream(
        (int) file.length());
BufferedInputStream in = null;
try {
    in = new BufferedInputStream(new FileInputStream(file));
    int buf_size = 1024;
    byte[] buffer = new byte[buf_size];
    int len = 0;
...
StringreadFileToString(String fileName)
read File To String 
FileInputStream fis = new FileInputStream(fileName);
String out = readInputStream(fis);
fis.close();
return out;
StringreadFileToString(String pathToFile)
read File To String 
byte[] buffer = readFileToByteArray(pathToFile);
if (buffer != null) {
    return new String(buffer);
return null;
StringreadFromFile(String filename)
read From File 
File file = new File(filename);
byte b[] = null;
try {
    if (file.exists()) {
        b = new byte[(int) file.length()];
        InputStream fi = new FileInputStream(file);
        fi.read(b);
        fi.close();
...
StringreadInstallationFile(File installation)
read Installation File 
RandomAccessFile f = new RandomAccessFile(installation, "r");
byte[] bytes = new byte[(int) f.length()];
f.readFully(bytes);
f.close();
return new String(bytes);
StringreadStringFromFile(File file)
read String From File 
FileReader reader = null;
try {
    reader = new FileReader(file);
    StringBuffer stringBuffer = new StringBuffer();
    char[] buffer = new char[1024];
    int count = 0;
    while ((count = reader.read(buffer)) != -1) {
        stringBuffer.append(buffer, 0, count);
...