32 Bit Standard:
1 Bit for Positive/Negative value of the number. 8 Bits for the Exponent and 24 Bits for Mantisse.
8 Bits for Exponent, that means 1 * 2^7 + 1 * 2^6 + ... = 255 When the maximum Exponent is 127, then the minimum Exponent should be -128, so that 126 + 128 = 255.
But why is Java saying that the minimum Exponent is -126? 255 - (127+126)= 2, so there are two numbers which we are not using.