Java integer to byte array

Question

I got an integer: 1695609641

when I use method:

String hex = Integer.toHexString(1695609641);
system.out.println(hex); 

gives:

6510f329

but I want a byte array:

byte[] bytearray = new byte[] { (byte) 0x65, (byte)0x10, (byte)0xf3, (byte)0x29};

How can I make this?

Answer 1

using Java NIO's ByteBuffer is very simple:

byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array();

for (byte b : bytes) {
   System.out.format("0x%x ", b);
}

output:

0x65 0x10 0xf3 0x29