|
|
| AJAX: Redefining Web Applications |
| |
|
</tr>
</table>
</br>
<table border=”1">
<tr>
<td align=”center” colspan=”5">
Key pressed:
<input type=”text” readonly id=”keypressed”
maxlength=”2" size=”2">
</td>
</tr>
<tr>
<td align=”center”>Binary</td>
<td align=”center”>Octal</td>
<td align=”center”>Decimal</td>
<td align=”center”>Hexadecimal</td>
</tr>
<tr>
<td align=”center”>
<input type=”text” readonly id=”binary”>
</td>
<td align=”center”>
<input type=”text” readonly id=”octal”>
</td>
<td align=”center”>
<input type=”text” readonly id=”decimal”>
</td>
<td align=”center”>
<input type=”text” readonly
id=”hexadecimal”>
</td>
</tr>
</table>
</body>
</html>
CharacterDecoderUsingJSONServlet.java
import java.io.IOException;
import java.rmi.ServerException;
import javax.servlet.http.*;
public class
CharacterDecoderUsingJSONServlet extends
HttpServlet {
public void doGet( HttpServletRequest
request, HttpServletResponse response
)throws ServerException, IOException {
String strEnteredKey = |
|
request.getParameter(“key”);
StringBuffer resp = null;
if( strEnteredKey!=”” ){
int num = Integer.parseInt(strEnteredKey);
resp = new StringBuffer
(“\r\n{\”conversion\”:{“);
resp.append(“\r\n\”binary\”:
\””+Integer.toBinaryString(num)+”\”,”);
resp.append(“\r\n\”octal\”:
\””+Integer.toString(num,8)+”\”,”);
resp.append(“\r\n\”decimal\”: \””+num+”\”,”);
resp.append(“\r\n\”hexadecimal\”:
\””+Integer.toString(num,16)+”\”}”);
resp.append(“\r\n}”);
response.setContentType(“text/xml”);
response.setHeader(“Cache-Control”, “nocache”);
response.getWriter().write(resp.toString());
}
else{
resp = new
StringBuffer(“\r\n{\”conversion\”:{“);
resp.append(“\r\n\”binary\”: \”?\”,”);
resp.append(“\r\n\”octal\”: \”?\”,”);
resp.append(“\r\n\”decimal\”: \”?\”,”);
resp.append(“\r\n\”hexadecimal\”: \”?\”}”);
resp.append(“\r\n}”);
response.setContentType(“text/xml”);
response.setHeader(“Cache-Control”, “nocache”);
response.getWriter().write(resp.toString());
}}}
Output:
|
|
Nov
2007 | Java Jazz Up | 55 |
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