Java Utililty Methods File Read via ByteBuffer

List of utility methods to do File Read via ByteBuffer

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Description

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

Method

ByteBufferreadShortByteArray(DataInput in)
read Short Byte Array 
int length = readShortLength(in);
ByteBuffer bb = ByteBuffer.allocate(length);
in.readFully(bb.array(), bb.position(), bb.remaining());
return bb;
StringreadString(ByteArrayInputStream bin)
read String 
int length = readInt(bin);
if (length == -1)
    return null;
if (length == 0)
    return "";
byte[] buffer = new byte[length];
bin.read(buffer);
return new String(buffer, ENCODING);
...
StringreadString(ReadableByteChannel channel)
read String 
int nameLen = readInt(channel); 
if (nameLen < 0) {
    return null;
ByteBuffer buf = ByteBuffer.allocate(nameLen * 2);
if (fillBuffer(channel, buf, true)) {
    char[] name = new char[nameLen];
    buf.rewind();
...
StringreadStringFromFile(String path)
Reads entire contents of specified file as a string. 
File file = new File(path);
byte[] encoded = new byte[(int) file.length()];
DataInputStream ds = null;
try {
    ds = new DataInputStream(new FileInputStream(file));
    ds.readFully(encoded);
} finally {
    if (ds != null) {
...
StringreadStringFromSocketChannel(SocketChannel sc)
read String From Socket Channel 
if (!sc.isOpen())
    return "";
StringBuffer resultString = new StringBuffer();
resultString.setLength(0);
ByteBuffer bbuf = ByteBuffer.allocate(BSIZE);
bbuf.clear();
try {
    int loopCounter = 0;
...
StringreadStringInUTF8(DataInput in)
read String In UTF 
int allocationBlockSize = 2000;
int capacity = allocationBlockSize;
int length = 0;
ByteBuffer buffer = ByteBuffer.allocate(allocationBlockSize);
boolean notEof = true;
while (notEof) {
    try {
        buffer.put(in.readByte());
...
ByteBufferreadToBuffer(final String filename)
Get byte buffer from file path. 
final File file = new File(filename);
final ByteBuffer bytebBuffer = ByteBuffer.allocate((int) file.length());
final FileInputStream fis = new FileInputStream(filename);
bytebBuffer.rewind();
int b = 0;
final byte[] buf = new byte[1024];
while ((b = fis.read()) != -1) {
    bytebBuffer.put((byte) b);
...
byte[]readToByteArray(String fname)
read a file into a byte array. 
File f = new File(fname);
long l = f.length();
FileInputStream fs = new FileInputStream(fname);
FileChannel fc = fs.getChannel();
ByteBuffer dst = ByteBuffer.allocate((int) l);
fc.read(dst);
byte b[] = dst.array();
fc.close();
...
intreadTwoByteInt(byte[] array, int start)
read Two Byte Int 
return ((array[start] & 255) << 8) + (array[start + 1] & 255);
StringreadTxtFromFile(File file)
read Txt From File 
ByteBuffer buffer = ByteBuffer.allocate((int) file.length());
FileInputStream in = new FileInputStream(file);
in.getChannel().read(buffer);
in.close();
return new String(buffer.array());