ascii - Java StringBuilder Appending Vertical-Tab Character Fails -

i receive data inputstream , have ascii character 11 vertical tab. can see vertical tab 11 in debugger. try append character stringbuilder appended , length increased.

however, problem when string returned ascii character lost when doing stringbuilder.tostring().tochararray() ascii character 11 can seen.

i need see in string ascii character 11.

public static void main(string[] args) {      // receive data inputstream      int read = inputstream.read();      stringbuilder stringbuilder = new stringbuilder();      stringbuilder.append((char) read); // /u000b ' '      stringbuilder.append("h");      system.out.println(stringbuilder.tostring()); // prints h      char[] characters = stringbuilder.tostring().tochararray(); // length 2 } 

how can achived?

edit:

i need see ascii character in original string in debugger. example:

public string getoriginalstring() {     return originalstring; }  public string process(string originalstring) {      return modifiedstring; } 

edit:

public string buildmessage(inputstream inputstream) throws exception {     stringbuilder message = null;     if(inputstream != null) {         message = new stringbuilder();         bufferedinputstream bufferedinputstream = new bufferedinputstream(inputstream);         int byteread = bufferedinputstream.read();         while(byteread != -1) {             char value = (char) byteread;             message.append(value);             // check how many bytes available             if(bufferedinputstream.available() != 0) {                 byteread = bufferedinputstream.read();             }             else {                 // avoid blocking of data                 break;             }         }     }     char[] characters = message.tostring().tochararray(); // returns length 2     return message.tostring(); }  public static void main(string[] args) {     string = buildmessage(inputstream);     char[] characters = i.tochararray(); // ascii characters lost     stringbuilder stringbuilder = new stringbuider(i);     char[] characters2 = stringbuilder.tostring().tochararray(); // ascii characters lost } 

a vertical tab white-space, can not "see it". expect visual appear of vertical tab be? vertical tab ascii character a historical artefact, dating days teletypes. has has no accepted special meaning vdus , windoing systems displaying text.