Binary Operations

[MarcoGT]

Hi,

i had to do some mathematical operations with binary numbers...; but i see
tha this is not implmented in Java; where can i find something for example?

Thanks.

Bye

 

[Collin VanDyck]

Hi,

i had to do some mathematical operations with binary numbers...; but i see
tha this is not implmented in Java; where can i find something for example?

Thanks.

Bye

You can certainly do binary operations.

You have the standard bitwise AND (&) and the bitwise OR (|) that you would
have in other languages. Also, the Integer class let's you take any int and
give you the binary string representation:

int x = 7;
Integer.toBinaryString(x); // this returns "111"

So what exactly is it you are trying to do? Please try and give more
information.

-CV

 

[Michael Borgwardt]

i had to do some mathematical operations with binary numbers...; but i see
tha this is not implmented in Java;

What "mathematical operations" are you talking about? Java definitely has all
the usual mathematical operations (+, -, *, /), which have nothing to do with
the numbers' base (which is a property of their representation, not the
numbers itself). It also internally uses a binary format and offers
appropriate bitwise operations (AND, OR, etc.) and finally you can easily
convert between numerical variables and a binary String reprentations.

So what exactly do you want to do and why do you believe it's not implemented
in Java?

 

[MarcoGT]

So what exactly is it you are trying to do? Please try and give more
information.

I need to do sums ed subractions;

for example i tried to make 111+1 and the result was 112...why?

Thanks

 

[Christophe Vanfleteren]

I need to do sums ed subractions;

for example i tried to make 111+1 and the result was 112...why?

Thanks

Because 111 + 1 is 112 ofcourse

Seriously, all math in java is base 10 by default.

What you can do is retrieve your base 2 numbers in String form, convert them
to an int using Integer.parseInt("111",2), and add those ints. To get the
resulting base 2 representation, use Integer.toBinaryString on the sum, as
someone has mentioned before.