Translating a String containing a binary value to Hex
15,478
Solution 1
Try using Integer.parseInt(binOutput, 2)
instead of Integer.parseInt(binOutput)
Solution 2
Ted Hopp beat me to it, but here goes anyway:
jcomeau@intrepid:/tmp$ cat test.java; java test 000010001010011
public class test {
public static void main(String[] args) {
for (int i = 0; i < args.length; i++) {
System.out.println("The value of " + args[i] + " is " +
Integer.toHexString(Integer.parseInt(args[i], 2)));
}
}
}
The value of 000010001010011 is 453
Author by
N-Aero
Updated on June 15, 2022Comments
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N-Aero almost 2 years
I am trying to translate a String that contains a binary value (e.g. 000010001010011) to it's Hex value.(453)
I've been trying several options, but mostly I get a converted value of each individual character. (0=30 1=31)
I have a function that translates my input to binary code through a non-mathematical way, but through a series of "if, else if" statements. (the values are not calculated, because they are not standard.) The binary code is contained in a variable String "binOutput"
I currently have something like this:
String bin = Integer.toHexString(Integer.parseInt(binOutput));
But this does not work at all.
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RRTW over 10 yearsGood answer, thanks, and what if I want "00000001" to be output as "01", not just only "1" ?
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Ted Hopp over 10 years@RRTW - Are you asking about the inverse problem: converting an integer value to a string? This can be done in a variety of ways:
Integer.toString()
,String.format
, and a few others. Your requirement is not clear. Do you always want a leading zero? Do you always want at least two digits? Something else? -
RRTW over 10 yearsYes I want leading zero always :-), as your hint, I'll try done this with String.format, thanks~
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Ted Hopp over 10 years@RRTW - If you want to format a non-negative integer value as a binary string with a leading zero, you can simply use
"0" + Integer.toString(value, 2)
. (That will generate "00" for zero, so you might want a special check for that case.)