concat byte arrays from list code example

Example 1: java combine to byte[]

byte[] one = getBytesForOne();
byte[] two = getBytesForTwo();
byte[] combined = new byte[one.length + two.length];

System.arraycopy(one,0,combined,0         ,one.length);
System.arraycopy(two,0,combined,one.length,two.length);

Example 2: java combine to byte[]

byte[] one = getBytesForOne();
byte[] two = getBytesForTwo();
byte[] combined = new byte[one.length + two.length];

for (int i = 0; i < combined.length; ++i)
{
    combined[i] = i < one.length ? one[i] : two[i - one.length];
}