Java reals IEEE754

http://people.uncw.edu/tompkinsj/133/numbers/Reals.htm
float
| 1bit sign |  8 bit exponent | 23 bit mantissa |
double
| 1bit sign | 11 bit exponent | 52 bit mantissa |

sign: 0 + 1 -
exponent: exponent - 127 for float, exponent - 1023 for double
mantissa: normalized 1-plus fraction

print bits of 1.0D      00111111 11110000 00000000 00000000 00000000 00000000 00000000 00000000

(0000 00000000 00000000 00000000 00000000 00000000 00000000 + 1) * 2 ^ (0111111 1111 - 1023) = 1.0

public class TestIEEE754	{
	public static void printBits(final long l)	{
		for ( int i = 63; i >= 0; --i )
		{
			final long	bit	=	0x1L << i;
			System.out.print((l & bit) != 0 ? "1" : "0");
			if ( 0 == i % 8 ) System.out.print(" ");
		}
		System.out.println();
	}
	//	http://people.uncw.edu/tompkinsj/133/numbers/Reals.htm
	public static void main(final String[] args)	{
		final long	l	=	1L;
		System.out.println("Double.longBitsToDouble(" + l + ")\t" +
				Double.longBitsToDouble(l));
		System.out.print("print bits of " + l + "L\t");
		printBits(l);
		System.out.println("Double.longBitsToDouble(" + l + ")\t" +
				Double.longBitsToDouble(l));

		final double	d	=	1.0D;
		System.out.println("\nDouble.toHexString(" + d + ")\t" +
				Double.toHexString(d));
		System.out.println("Double.doubleToLongBits(" + d + ")\t" +
				Double.doubleToLongBits(d));
		System.out.print("print bits of " + d + "D\t");
		printBits(Double.doubleToLongBits(d));
		System.out.println("Double.doubleToRawLongBits(" + d + ")\t" +
				Double.doubleToRawLongBits(d));
		System.out.print("print bits of " + d + "D\t");
		printBits(Double.doubleToRawLongBits(d));
	}
}