Java Utililty Methods FileInputStream Read

List of utility methods to do FileInputStream Read

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Description

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

Method

byte[]readFile(File file)
read File 
FileInputStream fis = new FileInputStream(file);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[4096];
int read;
while ((read = fis.read(buf)) != -1) {
    baos.write(buf, 0, read);
fis.close();
...
StringreadFile(File file)
read File 
String text = "";
FileInputStream fileIS = null;
DataInputStream dataIS = null;
try {
    fileIS = new FileInputStream(file);
    dataIS = new DataInputStream(fileIS);
    int length = dataIS.available();
    byte[] buffer = new byte[length];
...
byte[]readFile(File file)
read a file and return file context as a byte[] 
InputStream inStream = new FileInputStream(file);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int n;
byte[] buf = new byte[4096];
do {
    n = inStream.read(buf);
    if (n >= 0)
        bos.write(buf, 0, n);
...
byte[]readFile(File file)
read File 
FileInputStream fis = new FileInputStream(file);
byte[] buff = new byte[(int) file.length()];
fis.read(buff);
fis.close();
return buff;
StringreadFile(File file)
read File 
FileInputStream fis = new FileInputStream(file);
byte[] buffer = new byte[fis.available()];
while (fis.available() != 0) {
    fis.read(buffer);
fis.close();
return new String(buffer);
StringreadFile(File file)
read File 
try (FileInputStream in = new FileInputStream(file)) {
    byte[] bytes = readFully(in);
    return new String(bytes, "UTF-8");
byte[]readFile(File file)
read File 
int length = (int) file.length();
FileInputStream fis = new FileInputStream(file);
byte[] result = new byte[length];
int pos = 0;
while (pos < length) {
    pos += fis.read(result, pos, length - pos);
fis.close();
...
StringreadFile(File file)
Read the contents of a file as a single string. 
InputStream is = new FileInputStream(file);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[4096];
int read;
while ((read = is.read(buf)) != -1) {
    baos.write(buf, 0, read);
is.close();
...
byte[]readFile(File file)
Reads a file in binary format 
byte[] b = new byte[(int) file.length()];
try {
    FileInputStream fs = new FileInputStream(file);
    fs.read(b);
    fs.close();
} catch (FileNotFoundException e) {
    System.out.println("File Not Found.");
    e.printStackTrace();
...
byte[]readFile(File file)
read File 
try {
    if (file.length() > 1 << 30) {
        throw new ArrayIndexOutOfBoundsException("File is too big");
    byte[] data = new byte[(int) file.length()];
    FileInputStream fis = new FileInputStream(file);
    try {
        int n = 0;
...