unable to show image characters in java class

Question

I supposed to show/atleast print attached characters in a string String str = (attached)

 System.out.println("Str : "+Str);

But I am unable to print the exact chars. I did use UTF 8 and 16 encode.

Thanks in advance

Answer 1

You have what is known as a double encoding.

You have the three character sequence "你好吗" which you correctly point out is encoded in UTF-8 as E4BDA0 E5A5BD E59097.

But now, start encoding each byte of THAT encoding in UTF-8. Start with E4. What is that codepoint in UTF-8? Try it! It's C3 A4!

You get the idea.... :-)

Here is a Java app which illustrates this:

public class DoubleEncoding {
    public static void main(String[] args) throws Exception {
        byte[] encoding1 = "你好吗".getBytes("UTF-8");
        String string1 = new String(encoding1, "ISO8859-1");
        for (byte b : encoding1) {
            System.out.printf("%2x ", b);
        }
        System.out.println();
        byte[] encoding2 = string1.getBytes("UTF-8");
        for (byte b : encoding2) {
            System.out.printf("%2x ", b);
        }
        System.out.println();
    }
}