Java character encoding to HTML ISO-8859-1

Question

I have a byte[] containing the value -110 (and other negative values). When I convert it to string I need it to display a ’ (right single quote). Currently, I am getting a question mark (?)

The ’ aligns to the special ASCII character #146 mentioned in this page but I am now stuck as to how I can input -110 or 146 (-110+256) and be a ’ value. I have also trued Any advice would be greatly appreciated.

byte[] b = {-110,84};
System.out.println(new String(b, Charset.forName("Windows-1252"))); //Displays ?T . The desired output should be ’T
System.out.println(new String(b, Charset.forName("UTF-8"))); //Displays ?T . The desired output should be ’T
System.out.println(new String(b, Charset.forName("ISO-8859-1"))); //Displays ?T . The desired output should be ’T

Your console probably can't print that character. When I try your code, it works fine with the first variant. — assylias
– assylias, Commented Nov 7, 2017 at 12:04
Your link doesn't work, but U+0092 is a private use character. Note that ASCII doesn't contain anything over 127 - there's no such thing as "special ASCII". It looks like the character you want (the ’ you pasted) is U+2019. That's not part of ISO-8859-1. — Jon Skeet
– Jon Skeet, Commented Nov 7, 2017 at 12:04
The page you've now linked claims that "In ISO-8859-1, the characters from 128 to 159 are not defined." That's not quite true - it's true for ISO 8859-1, but not for ISO-8859-1. (See Wikipedia) The page you linked to isn't terribly clear, but I suspect the part you're looking at is using Windows-1252, but that your console doesn't support it. — Jon Skeet
– Jon Skeet, Commented Nov 7, 2017 at 12:07
Take it from a person with umlauted characters in his name: There is an extended ASCII for every language, dialect, OS and/or phase of the moon, so it's probably a good idea to use Unicode. — Haem
– Haem, Commented Nov 7, 2017 at 12:15
@HeikkiMäenpää: I'd try to avoid the term "extended ASCII" entirely, as it causes pretty much nothing but confusion. — Jon Skeet
– Jon Skeet, Commented Nov 7, 2017 at 13:11

Chris · Accepted Answer · 2017-11-15 18:10:02Z

1

Thanks for the responses as John Skeet points out in his reply, the Java program needed to recognize the input data Windows-1252 and the Windows command line wasn't set to the code page either.

Setting the command line codepage to Windows-1252 was done by running

chcp 1252

Starting the Java program to use Windows-1252 as the default was done by adding the following parameter

-Dfile.encoding="Windows-1252"

answered Nov 15, 2017 at 18:10

Chris

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