Thread: numerical conversion methods..

i was looking for any methods in Math package that can convert any number such as [DECIMAL-OCTAL],
[BINARY-OCTAL], [HEXA-OCTAL], [BINARY-HEXA], ETC.. (my proffesor told me,) but i cant find any of it,

are there any methods such like that? or should i define my own class to perform this tasks?

How about this:

        System.out.println(Integer.toHexString(195012));
        System.out.println(Integer.toBinaryString(195012));
        System.out.println(Integer.toOctalString(195012));

Expected output would be:

2f9c4
101111100111000100
574704

// Json

Damn! thats it!!! that's what i've been looking for! tnx sir JSon!!!! your really awesome!
i never knew that those methods were in Integer class..I thought it was in Math. Im using netbeans but i didnt notice all of those methods when everytime im using that class

my question is, regarding with OCTAL conversion.. why is it converted into String?
(i understand a liitle bit with hexa and binary) ..

and how could i reverse those methods?

if i input

10001110011

and i want it to convert into a Decimal? or
if i input

CABACABACABA

and i want it to convert into a Decimal?


hmm.

Ok, let me extend my first example.

        System.out.println("195012 hex: " + Integer.toHexString(195012));
        System.out.println("195012 binary: " + Integer.toBinaryString(195012));
        System.out.println("195012 octal: " + Integer.toOctalString(195012));
        System.out.println("From hex: " + Integer.decode("#2f9c4"));
        System.out.println("From binary: " + Integer.parseInt("101111100111000100", 2));
        System.out.println("From octal: " + Integer.decode("0574704"));

Output:

195012 hex: 2f9c4
195012 binary: 101111100111000100
195012 octal: 574704
From hex: 195012
From binary: 195012
From octal: 195012

// Json

WOW TNX AGAIN SIR JSON!!

TNX A LOT!!

ahh so thats the purpose of the .decode() method of Integer Class... tnx again!!

but why .parseInt in binary?

System.out.println("From binary: " + Integer.parseInt("101111100111000100", 2));

Because there does not appear to be a decode for the binary number.

// Json

Indeed

// Json