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	private static byte[] get4bytes(long l)	{		// break down to bytes		byte a[] = new byte[4];		a[0] = (byte)(l >> 24);		a[1] = (byte)(l >> 16);		a[2] = (byte)(l >> 8);		a[3] = (byte)(l >> 0);		// assemble back		// ll != l.		long ll = (unsigned(a[0]) << 24) | (unsigned(a[1]) << 16) | (unsigned(a[2]) <<8) | unsigned(a[3]);		System.err.println("original " + l);		System.err.println("new      " + ll);                // output:                // original 33996344                // new      33963576		return a;	}		static byte unsigned(byte b)	{		if (b < 0)		{			b += 128;		}		return b;	}