[java] int <-> byte[] 변환

// byte[] -> int
	public int bytesToInt(byte[] b ){
		int temp1 = (int) (b[3]) & 0xff;
		int temp2 = ((int) (b[2]) & 0xff) << 8;
		int temp3 = ((int) (b[1]) & 0xff) << 16;
		int temp4 = ((int) (b[0]) & 0xff) << 24;
		int temp = temp1 + temp2 + temp3 + temp4;
		return  temp;
	}	
	//int --> byte[]	
	public byte[] intToBytes(int i){
		byte[] b = new byte[4];
		b[0] = (byte)((i &  0xff000000) >> 24);
		b[1] = (byte)((i &  0x00ff0000) >> 16);
		b[2] = (byte)((i &  0x0000ff00) >> 8);
		b[3] = (byte)(i &  0x000000ff);		
		return b;
	}