ascii-table

Ascii table
A borrowed ascii table in servlet format.

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Ascii table

An example ascii table, like the ASP and PHP ones found here. This was pulled from a newsgroup listing for my own use.

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class AsciiTable extends HttpServlet
{
   /**
    * Non displayed copyright message
    */
   private static final String EmbeddedCopyright ="Copyright 2001 Roedy Green, Canadian Mind Products,http://mindprod.com";

public void doGet(HttpServletRequest request,HttpServletResponse response)
   throws ServletException, IOException
   {

/* Output */
      response.setContentType("text/html");
      PrintWriter out = response.getWriter();

out.println("<html><body>\n");

out.println("<table border=\"1\" cellspacing=\"1\" bordercolor=\"#808080\" cellpadding=\"7\">\n");
 out.println("<tr><th colspan=\"6\">ASCII Table</th></tr>");
 out.println("<tr><th>Char</th><th>Dec</th><th>Hex</th><th>Octal</th><th>HTML</th><th>Notes</th></tr>");;

for ( char c=0; c<=0xff; c++ )
 {

out.println("<tr>");

/* displayable char */
 out.println("<td align=\"center\">");
 if ( c < 32 )
 {
 /* control char, e.g. Cr -> ^m */
 out.println("^"+(char)(c+64));
 }
 else if ( c == 32 )
 {
 /* space */
 out.println("&nbsp;");
 }
 else if ( c > 126 )
 {
 /* high ascii */
 out.println("&#"+Integer.toString(c)+";");
 }
 else
 {
 /* regular*/
 out.println((char) c);
 }
 out.println("</td>");

/* decimal */
 out.println("<td align=\"right\">");
 out.println(Integer.toString(c));
 out.println("</td>");

/* hex */
 out.println("<td>");
 out.println("0x"+toLZ(c,2,16));
 out.println("</td>");

/* octal */
 out.println("<td>");
 out.println(toLZ(c,4,8));
 out.println("</td>");

/* HTML code */
 out.println("<td>");
 if ( c<32 || c > 126 )
 {
 out.println("&amp;#"+Integer.toString(c)+";");
 }
 else if ( c == 32 )
 {
 /* space */
 out.println("&amp;nbsp;");
 }
 else
 {
 out.println((char) c);
 }
 out.println("</td>");

/* notes */
 out.println("<td>");
 out.println(descs(c));
 out.println("</td>");

out.println("</tr>\n");

} // end for
 out.println("</table>");
 int b = 34;
 out.println((char) b);
 out.println(Integer.toString('A'));

}

/**
    * Convert an integer to a String, with left zeroes.
    *
    * @param i      the integer to be converted
    *
    * @param len    len the length of the resulting string
    *
    * @param base   base 10=decimal 16=hex 8=octal
    *
    * @return String representation of the int e.g. 007
    */
   public final static String toLZ( int i, int len, int base)
   {
      // Since String is final, we could not add this method there.
      String s = Integer.toString(i, base);

if ( s.length() > len )
 {
 return s.substring(0,len);
 } else if ( s.length() < len ) {
 // pad on left with zeros
 return "000000000000000000000000000".substring(0,len - s.length()) + s;
 } else{
 return s;
 }
 } // end toLZ

/**
 * Get description of a character
 *
 * @param c character to describe
 *
 * @return string destribing character, or &nbsp; if none available.
 */
 static String descs( char c )
 {
 switch ( c )
 {
 case 0: return "NUL nul";
 case 1: return "SOH start of header";
 case 2: return "STX start of text";
 case 3: return "ETX end of text";
 case 4: return "EOT end oftransmission";
 case 5: return "ENQ enquiry";
 case 6: return "ACK acknowledege";
 case 7: return "BEL bell";
 case 8: return "BS backspace";
 case 9: return "HT horizonal tab";
 case 10: return "LF line feed";
 case 11: return "VT vertical tab";
 case 12: return "FF form feed";
 case 13: return "CR carriage return";
 case 14: return "SO shift out";
 case 15: return "SI shift in";
 case 16: return "DLE data link escape";
 case 17: return "DC1 device control 1,"+" XON resume transmission";
 case 18: return "DC2 device control 2";
 case 19: return "DC3 device control 3,"+ " XOFF pause transmission";
 case 20: return "DC4 device control 4";
 case 21: return "NAK negativeacknowledge";
 case 22: return "SYN synchronise";
 case 23: return "ETB end text block";
 case 24: return "CAN cancel";
 case 25: return "EM end message";
 case 26: return "SUB substitute";
 case 27: return "ESC escape";
 case 28: return "FS file separator";
 case 29: return "GS group separator";
 case 30: return "RS record separator";
 case 31: return "US unit separator";
 case 32: return "space";
 case 127: return "DEL delete";
 case 0241: return "PostScript " + "exclamdown";
 case 0242: return "PostScript " + "cent";
 case 0243: return "PostScript " + "sterling";
 case 0244: return "PostScript " + "fraction";
 case 0245: return "PostScript " + "yen";
 case 0246: return "PostScript " + "florin";
 case 0247: return "PostScript " + "section";
 case 0250: return "PostScript " + "currency";
 case 0251: return "PostScript " + "quotesingle";
 case 0252: return "PostScript " + "quotedblleft";
 case 0253: return "PostScript " + "guillemotleft";
 case 0254: return "PostScript " + "guilsinglleft";
 case 0255: return "PostScript " + "guilsinglright";
 case 0256: return "PostScript " + "fi";
 case 0257: return "PostScript " + "fl";
 case 0261: return "PostScript " + "endash";
 case 0262: return "PostScript " + "dagger";
 case 0263: return "PostScript " + "daggerdbl";
 case 0264: return "PostScript " + "periodcentered";
 case 0266: return "PostScript " + "paragraph";
 case 0267: return "PostScript " + "bullet";
 case 0270: return "PostScript " + "quotesinglbase";
 case 0271: return "PostScript " + "quotedblbase";
 case 0272: return "PostScript " + "quotedblright";
 case 0273: return "PostScript " + "guillemotright";
 case 0274: return "PostScript " + "ellipsis";
 case 0275: return "PostScript " + "perthousand";
 case 0277: return "PostScript " + "questiondown";
 case 0301: return "PostScript " + "grave";
 case 0302: return "PostScript " + "acute";
 case 0303: return "PostScript " + "circumflex";
 case 0304: return "PostScript " + "tilde";
 case 0305: return "PostScript " + "macron";
 case 0306: return "PostScript " + "breve";
 case 0307: return "PostScript " + "dotaccent";
 case 0310: return "PostScript " + "dieresis";
 case 0312: return "PostScript " + "ring";
 case 0313: return "PostScript " + "cedilla";
 case 0315: return "PostScript " + "hungarumlaut";
 case 0316: return "PostScript " + "ogonek";
 case 0317: return "PostScript " + "caron";
 case 0320: return "PostScript " + "emdash";
 case 0341: return "PostScript " + "AE";
 case 0343: return "PostScript " + "ordfeminine";
 case 0350: return "PostScript " + "Lslash";
 case 0351: return "PostScript " + "Oslash";
 case 0352: return "PostScript " + "OE";
 case 0353: return "PostScript " + "ordmasculine";
 case 0361: return "PostScript " + "ae";
 case 0365: return "PostScript " + "dotlessi";
 case 0370: return "PostScript " + "islash";
 case 0371: return "PostScript " + "oslash";
 case 0372: return "PostScript " + "oe";
 case 0373: return "PostScript " + "germancdbls";
 default: return "&nbsp";
 }
 }

}