Home Discussion Discuss: Convert Hexadecimal into Binary and Long

• hm?anon September 2, 2011 at 2:19 AM

how can this work? converting the string hex to int is not gonna fly - > what if the hex number happens to contain an (A-F) hex val? how would int handle that?

• Wrongnufan October 12, 2011 at 10:04 PM

Wow, this is pretty wrong.. hexavalue 14 = 16^1*1 + 16^0*4 = 20 in dec.. but 20 in dec is NOT 1110 in bin.. It's 10100. Integer.toBinaryString(i) needs a decimal number, but you put in 14 meaning hex.

• Thanx!!java_p November 6, 2011 at 1:43 AM

thank u very much for this splendid piece of code!!

• ConvertAlex January 25, 2012 at 3:38 PM

What about I enter a hexa value like: A, B, 9B ?

• ConverterAlex January 25, 2012 at 3:42 PM

And one thing more, .toBinaryString() does not return first digits if this are "0". Integer.toBinaryString(3) return 11 not 0011.

• 64 bit Hex to binary conversionMonesh Kumar February 24, 2012 at 3:07 PM

public class HexData { public static void main(String[] args) { String hexData = "0023456789ABCDEF"; long longData; String binData = null; int balZero = 0; System.out.println("Hex Data : " + hexData); longData = Long.parseLong(hexData, 16); System.out.println("Long Data : " + longData); binData = Long.toBinaryString(longData); balZero = (64 - (binData.length()-1)); for(int i=1;i<balZero;i++) { binData = "0" + binData; } System.out.println("Bin Data : " + binData); } }

• Rectify mistake Manjeet Harsh March 29, 2012 at 2:03 AM

The logic of conversion from Hexadecimal to Integer is wrong. 14 should have been converted into 10100 binary equivalent. And the binary 1110 is equivalent to E in Hexadecimal.

• ErrorVibhav Sinha August 5, 2012 at 9:45 PM

How can you parseInt a String having non digit characters. It is giving error.

• Hexidecimal to Binary Conversion FixPancho Delgado August 10, 2012 at 8:20 AM

int i = Integer.parseInt(hex); should be int i = Integer.parseInt(hex,16); to accomodate a-f Change that and it works great - Thank you so much for the example.

• this is longdfjk August 23, 2012 at 3:36 PM

Is it??

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