Java Utililty Methods Convert via ByteBuffer

List of utility methods to do Convert via ByteBuffer

  1. HOME
  2. Java
  3. C
  4. Convert via ByteBuffer

Description

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

Method

byte[]intToBytes(final int value)
Convert an int into a byte array. 
synchronized (intBuffer) {
    intBuffer.clear();
    intBuffer.putInt(value);
    return intBuffer.array();
byte[]intToBytes(final int x)
Converts an int value into an array of 4 bytes. 
final ByteBuffer buffer = ByteBuffer.allocate(4);
buffer.putInt(x);
return buffer.array();
byte[]intToBytes(int i, byte[] backingStore, int offset)
Convert a Java int to a 4-byte array. 
ByteBuffer byteBuffer = ByteBuffer.allocate(NUM_BYTES_IN_INT);
byteBuffer.putInt(i);
return byteBuffer.array();
byte[]intToBytes(int n)
int To Bytes 
byte[] bytes = new byte[Integer.SIZE / 8];
ByteBuffer b = ByteBuffer.wrap(bytes);
b.asIntBuffer().put(n);
return bytes;
byte[]intToBytes(int tagId)
int To Bytes 
ByteBuffer byteBuffer = ByteBuffer.allocate(1).putInt(tagId);
byte[] bytes = byteBuffer.array();
return bytes;
byte[]intToBytesLE(int value)
int To Bytes LE 
return ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(value).array();
byte[]intToBytesWithLen(int x, int len)
Write a big-endian integer into the least significant bytes of a byte array. 
if (len <= 4) {
    return trailingBytes(intToBytes(x), len);
} else {
    ByteBuffer bb = ByteBuffer.allocate(len);
    bb.position(len - 4);
    bb.putInt(x);
    assert bb.remaining() == 0;
    return bb.array();
...
byte[]long2bytes(long num)
longbytes 
ByteBuffer buffer = ByteBuffer.allocate(8).order(ByteOrder.LITTLE_ENDIAN);
buffer.putLong(num);
return buffer.array();
longlongFromBytes(byte[] array)
long From Bytes 
if (array.length != Long.BYTES) {
    throw new IllegalArgumentException(String.format("Invalid array lenght:%d", array.length));
ByteBuffer bb = ByteBuffer.allocate(Long.BYTES);
bb.put(array);
bb.flip();
return bb.getLong();
longlongFromBytes(byte[] value)
long From Bytes 
return ByteBuffer.wrap(value).getLong();