问题
I know that converting a decimal to binary with Integer.toBinaryString(355) = 0000000101100011 and
Integer.toBinaryString(-355) = 1111111010011101 (where I take the lower 16 bits of the 32 bit result).
What I would like to do is the other way and take a 16-bit twos's complement binary string and to convert to decimal.
i.e.
0000000000110010 = 50
1111111111001110 = -50
Rather than 1111111111001110 = 65486
How would I do this?
回答1:
You need to read the result into short.
short res = (short)Integer.parseInt("1111111111001110", 2);
System.out.println(res);
This prints -50.
回答2:
Use a short? They occupy 16 bits.
http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html
来源：https://stackoverflow.com/questions/15837899/java-twos-complement-binary-to-integer