Applet URLConnection to servlet

in an applet i open an ObjectOutputStream to a Servlet over a URLConnection - then i write something - then i close the stream.
then i am trying to open an ObjectInputStream over the same URLConnection an i get an IOException.
thx in advance!

two URLConnections and everything ok...

Similar Messages

Applet that calls servlet

How to achieve something like this: i ve got a simple applet that calls servlet or JSp. when i get the response i would like to show it like a new page canceling the previous one with applet. Please Help. I have no idea how to using the data from response produce a new page. Nay resources hints??

In the second case:
You want to use the URL and URLConnection to POST or GET information to the server
that the applet came from (if not you have to sign the applet or set up policy).
The response from the server should be opened in a new window.
To post the data:
http://javaalmanac.com/egs/java.net/Post.html
This will get you a string, after you got that string you can use JSObject to call a javascript
method.
for example your applet:
import netscape.javascript.*; // either in jaws.jar or plugin.jar in your lib dir
..... extends Applet{
public Sting newpage;
... method that opens URLConnection and receives response in strRes
this.newpage = strRes
JSObject win;
win = JSObject.getWindow(this);
win.eval("methodThatOpensWindow()");
The html page looks like
<object ...... id="myapplet" myascript="true">
function methodThatOpensWindow(){
var win = window.open('','','');
win.document.write(document.getElementById("myapplet").newpage);
...

How to use HTTPS with JSSE URLConnection in servlet

Hi, I have a servlet that calls another servlet using the URLConnection class. This seems to work very well if I am using http. However when trying to call it using https using JSSE I get the following error:
"javax.net.ssl.SSLHandshakeException: untrusted server cert chain."
The following is the code that I am using in the servlet:
          java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
          System.getProperties().put("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
          this.servlet = new URL(servletURL);
          URLConnection conServlet = servlet.openConnection();
Both of these servlets are under IIS on my machine. I am able to execute each of the servlets from the browser using https directly. Does this sounds like an SSL certifcate problem or is that something in the Java code? Any ideas greatly appreciated.

Hi,
Perhaps you can create your own trust manager. I've found this example in another newsgroup: (please note that this example trusts everyone, but you can modify the trust manager as you wish)
if (putUrl.startsWith("https"))
//set up to handle SSL if necessary
System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
System.setProperty("javax.net.debug", "ssl,handshake,data,trustmanager");
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
//use our own trust manager so we can always trust
//the URL entered in the configuration.
X509TrustManager tm = new MyX509TrustManager();
KeyManager []km = null;
TrustManager []tma = {tm};
SSLContext sc = SSLContext.getInstance("ssl");
sc.init(km,tma,new java.security.SecureRandom());
SSLSocketFactory sf1 = sc.getSocketFactory();
HttpsURLConnection.setDefaultSSLSocketFactory (sf1);
m_url = new URL (putUrl);
class MyX509TrustManager implements X509TrustManager {
public boolean isClientTrusted(X509Certificate[] chain) {
return true;
public boolean isServerTrusted(X509Certificate[] chain) {
return true;
public X509Certificate[] getAcceptedIssuers() {
return null;
}Hope this helps,
Kurt.

Applet in a servlet

I have an applet class in my webserver directory. How do i call it within a servlet .What should be the values for code and codebase properties. Kindly send me an example code if possible.
Bye for now
Thanx in advance
Naveen

You don't call an applet from a servlet. But if you want to include the applet in the HTML generated by the servlet, there are no special rules that apply because a servlet generated the HTML. Just follow the usual rules for applets embedded in HTML.

Advantages and Disadvantages of Applet over JSP/servlet

Can some one please let me know what are the major advantages and disadvantages of using Applets over JSP/Servlet technology?

Well, a servlet / jsp is generated on the server, an applet on the client side. That's the most important difference.
Appelt's usually are for little applications like games and stuff, you can run in a browser.
Servlets are for dynamic pages, for example database-viewing and stuf...

How to forward an applet page to servlet/jsp?

I have an applet in imageMap.jsp file. This applet displays a map. When user enters the page of imageMap.jsp, they will see the map . If user clicks a point of the map, the latitude and longitude of that point should be sent to Search.java servlet and search results should replace the current page.
My Search.java servlet works well.
I think I should add mouse event in the applet. I can use MouseEvent.getX() and MouseEvent.getY() in the applet to get latitude and longitude. But I do not know how to go from this applet to servlet. How can I forward applet page to servlet?

The <jsp:plugin> action is used in pages to generate client specific HTML tags involving download and execution of the applet that is specified in the tag.

Sending an image from an applet to a servlet

I have sucessfully set up a Serializable connection between my applet and my servlet. However if i try to pass an object that implements the serializable interface that has a BufferedImage object encapsulated in it... a NotSerializableException is thrown... The reason i am doing this is that i have to save the image to disk (Server Side).. If someone could advise me on a way to solve this problem or provide a better solution to my problem i would grateful

Implementing Serializable isn't enough to make a class serializable: every not-transient field must implement Serializable too.
Said this, you can marshal an array of int (arrays are serializable of course!) containing your pixels:
//Applet side
BufferedImage img;
Raster r=img.getRaster();
int[] pixels=r.getPixels(0,0,r.getWidth(),r.getHeight());
//serialize pixels, possibly along with width, height and imageType of BufferedImage
//Servlet side
int[] pixels;
//deserialize pixels and possibly width,height and imageType
BufferedImage img=new BufferedImage(width,height,imageType);
img.getRaster().setPixels(0,0,width,height);Hope it helps

High performance writing Chinese from an Applet to a Servlet

Hi,
I am using DataOutput/InputStreams to wrtie UTF (Chinese Characters from an Applet to a servlet) Now, I already HAVE the chinese characters in the applets memory and I need to write them to the servlet. I am using the "writeUTF()" and "readUTF" methods in the Input and output Streams. Now I want to replace the Data Streams with buffered Streams to improve performance. What is the equivalent method for buffereed Streams?
DataOutputStream output = new DataOutputStream(connection.getOutputStream());
output.writeUTF(chineseString);
output.close();
DataInputStream input = new DataInputStream(connection.getInputStream());
String response = input.readUTF();
input.close();
Thanks.
Regards,
Carlos

Hi Carlos,
I don't think there is a method for buffered streams that is exactly equivalent to writeUTF, but you could use the character stream reader/writer pair as follows:
OutputStreamWriter osw = new OutputStreamWriter(connection.getOutputStream (), "UTF8");
Writer output = new BufferedWriter(osw);
InputStreamReader isr = new InputStreamReader(connection.getInputStream (), "UTF8");
Reader input = new BufferedReader(isr);     now, however, since these classes don't have a read/write String method you will need to write out your string character by character followed by an end of Line:
loop through characters in output String:
     output.write(aChar)
output.newline ()and then read it back in as a line using:
input.readLine() Post back if it's unclear.
Regards,
Joe

How to call a Applet from a servlet and vice versa...?

Hi all
Can anyone help me how to call a applet from a servlet and vice versa. When the applet is called it should contact the database (oracle8i) and get the data. When i submit the applet form the data in the applet should be saved in the database.
Thanks in advance
Kamalakannan

Sweep is correct about requestDispatcher being another approach for inter-servlet delegation; the only issue that i recall with this approach is that it defaults the method of the destination servlet to the one it was called from...for example, calling servlet2 from within servlet1.post() resulted in the dispatcher attempting to utilize servlet2.post() - i believe that i searched for a parameterize solution to no avail :( (ended up handling the request by placing a "fake" doPost() in servlet2 that simply called servlet2.doGet())
however, if your application is functioning correctly on your pc/webserver then the problem may be external to servlet communication (e.g. client webserver's ports not configured or blocked, missing runtime classes, etc.)
my suggestion would be to set aside the programmatic concerns for the moment - what is the response if you open a browser on a client's machine and access the URL in question (i.e. http://clientserver:port/stefanoServlet)? If it will not respond to access in this manner then it certainly won't when your application calls for it.
It's possible that there is a coding error but, given the info supplied, i'd start examining the environment, first. Let us know if you have any luck with the test i recommended or not (please provide abundant detail). Or, if you've found the solution then you may want to post back with a quick blub so the next person knows how to escape the trap.
D

How can I use URLConnection to use applet communication with servlet?

I want to send a String to a servlet in applet.I now use URLConnection to communicat between applet and servlet.
====================the applet code below=========================
import java.io.*;
import java.applet.Applet;
import java.awt.*;
import java.net.*;
//I have tested that in applet get data from servlet is OK!
//Still I will change to test in applet post data to a servlet.
public class TestDataStreamApplet extends Applet
String response;
String baseurl;
double percentUsed;
String total;
public void init()
try
java.net.URL url = new java.net.URL(getDocumentBase(),"/servlet/dataStreamEcho");
//String currenturl=new String("http://lib.nju.edu.cn");
java.net.URLConnection con = url.openConnection();
//URL currentPage=getCodeBase();
// String protocol=currentPage.getProtocol();
// String host=currentPage.getHost();
//int port=currentPage.getPort();
// String urlSuffix="/servlet/dataStreamEcho";
// URL url=new URL(protocol,host,port,urlSuffix);
// URLConnection con=url.openConnection();
con.setUseCaches(false);
con.setDoOutput(true);
con.setDoInput(true);
ByteArrayOutputStream byteout = new ByteArrayOutputStream();
PrintWriter out=new PrintWriter(byteout,true);
String currenturl=new String("http://lib.nju.edu.cn");
String var1=this.encodedValue(currenturl); //encode the data
String data="currenturl="+var1;
out.print(data);
out.flush();
con.setRequestProperty("Content-Length",String.valueOf(byteout.size()));
con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
byteout.writeTo(con.getOutputStream());
BufferedReader in=new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
while((line=in.readLine())!=null)
     System.out.println(line);
catch (Exception e)
e.printStackTrace();
private String encodedValue(String rawValue)
     return(URLEncoder.encode(rawValue));
=========================The servlet code below=====================
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class DataStreamEcho extends HttpServlet
{public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
      res.setContentType("text/plain");
      PrintWriter out = res.getWriter();
      Runtime rt = Runtime.getRuntime();
      out.println(rt.freeMemory());
      out.println(rt.totalMemory());
      response.setContentType("text/html; charset=GBK");
      request.setCharacterEncoding("GBK");
      PrintWriter out = response.getWriter();
      HttpSession session=request.getSession();
      ServletContext application=this.getServletContext();
      String currenturl=(String)session.getAttribute("currenturl");
      out.print(currenturl);
=============================================================
I have done up,but I found the program don't run as I have thought.
Can you help me to find where is wrong?Very thank!

You are trying to pass the current URL to the servlet
from the applet, right?
Well, what I put was correct. Your servlet code is
trying to read some information from session data.
request.getInputStream() is not the IP address of
anything...see
http://java.sun.com/products/servlet/2.2/javadoc/javax
servlet/ServletRequest.html#getInputStream()
Please read
http://www.j-nine.com/pubs/applet2servlet/Applet2Servle
.htmlNo,you all don't understand I.
I want to send an Object to the server from a applet on a client.not url only.I maybe want to send a JPEG file instead.
All I want is how to communicate with a servlet from an applet,send message to servlet from client's applet.
for example,Now I have a method get the desktop picture of my client .and I want to send it to a server with a servlet to done it.How can I write the applet and servlet program?
Now my program is down,But can only do string,can't not done Object yet.Can anyone help me?
=======================applet=============================
public void init()
try
java.net.URL url = new java.net.URL(getDocumentBase(),"/servlet/dataStreamEcho");
//String currenturl=new String("http://lib.nju.edu.cn");
java.net.URLConnection con = url.openConnection();
//URL currentPage=getCodeBase();
// String protocol=currentPage.getProtocol();
// String host=currentPage.getHost();
//int port=currentPage.getPort();
// String urlSuffix="/servlet/dataStreamEcho";
// URL url=new URL(protocol,host,port,urlSuffix);
// URLConnection con=url.openConnection();
con.setUseCaches(false);
con.setDoOutput(true);
con.setDoInput(true);
ByteArrayOutputStream byteout = new ByteArrayOutputStream();
PrintWriter out=new PrintWriter(byteout,true);
String currenturl=new String("http://lib.nju.edu.cn");
String var1=this.encodedValue(currenturl); //encode the data
String data="currenturl="+var1;
out.print(data);
out.flush();
con.setRequestProperty("Content-Length",String.valueOf(byteout.size()));
con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
byteout.writeTo(con.getOutputStream());
con.connect();
BufferedReader in=new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
while((line=in.readLine())!=null)
     System.out.println(line);
catch (Exception e)
e.printStackTrace();
=======================servlet=============================
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
     response.setContentType("text/html; charset=GBK");
//request.setCharacterEncoding("GBK");
PrintWriter out = response.getWriter();
HttpSession session=request.getSession();
ServletContext application=this.getServletContext();
//String currenturl=(String)session.getAttribute("currenturl");
String currenturl=(String)request.getParameter("currenturl");
out.print(currenturl);
File fileName=new File("c:\\noname.txt");
fileName.createNewFile();
FileOutputStream f=new FileOutputStream(fileName); //I just write the String data get from
//applet to a file for a test.
byte[] b=currenturl.getBytes();
f.write(b);
f.close();
}

How do i make http connection from an applet to a servlet

i am not able to make a http connection from the applet to servlet
my code for servlet is as follows
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class newDatabaseServlet extends HttpServlet {
//      Connection con;
// Statement stmt;
     public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
          resp.setContentType("text/content");
          System.out.println("megha");
          String mthd[] = req.getParameterValues("event");
          System.out.println(mthd.length);
          System.out.println(mthd);
          System.out.println(req.getQueryString());
          // System.out.println("megha");
PrintWriter fw = new PrintWriter(new FileOutputStream(new File("e:/JRun/servers/default/default-app/mycontent.txt")));
String s = "this text comes from servlet";
fw.print(s);
fw.flush();
          if(mthd[0].equalsIgnoreCase("callEditor")) {
               openEditor(req,resp);
public void openEditor(HttpServletRequest req, HttpServletResponse resp) {
     /* try {
          Class.forName("oracle.jdbc.driver.OracleDriver");
     con = DriverManager.getConnection("jdbc:oracle:thin:@pc6:1521:oradba","test","test");
     catch(Exception e) {
          e.printStackTrace();
          try {
               resp.sendRedirect("/RunApp1.html");
          catch(IOException e) {
               e.printStackTrace();
/*try {
     Class.forName("oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection("jdbc:oracle:thin:@pc6:1521:oradba","test","test");
     catch(Exception e) {
     e.printStackTrace();
     resp.setContentType("text/html");
     PrintWriter output = resp.getWriter();
     try {
stmt = con.createStatement();
String strContent = "select * from edTable where newsid = 2";
ResultSet rs = stmt.executeQuery(strContent);
if(rs.next()) {
               String newsText = rs.getString(2);
/* StringBuffer buf = new StringBuffer();
               buf.append("<B>servlet</B>");
               try {
               resp.sendRedirect("RunApp");
          catch(IOException e) {
               e.printStackTrace();
//               output.println(buf.toString());
//          output.close();
my code for applet is
import javax.swing.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.awt.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
public class EdApplet extends JApplet {
public void init() {
     Container c;
     c = getContentPane();
JPanel but = new JPanel();
c.add(but,BorderLayout.NORTH);
final JEditorPane je = new JEditorPane();
JScrollPane jsp = new JScrollPane(je);
HTMLEditorKit ht = new HTMLEditorKit();
je.setEditorKit(ht);
je.setEditable(true);
HTMLDocument mdoc = (HTMLDocument)ht.createDefaultDocument();
StyleSheet mcontext =mdoc.getStyleSheet();
je.setDocument(mdoc);
c.add(jsp,BorderLayout.CENTER);
JPanel bot = new JPanel();
c.add(bot,BorderLayout.SOUTH);
JButton save = new JButton("save");
but.add(save);
String str = getInitialText();
     je.setText(str);
     String servletUrl="http://pc7:8100/servlet/newDatabaseServlet";
try{
               URL servletURL = new URL(servletUrl);
               URLConnection servletConnection = servletURL.openConnection();
          servletConnection.setRequestProperty("event","saveText");
          servletConnection.setDoOutput(true);
          servletConnection.setUseCaches(false);
     catch(Exception e) {
//          je.setText(e.printStackTrace());
     ActionListener lst = new ActionListener() {
          public void actionPerformed(ActionEvent ae) {
               String save = je.getText();
               saveText(save,je);
     save.addActionListener(lst);
//je.setText("<B>this</B>");
//URLConnection servletConnection = null;
/* try {
          String servletUrl="http://pc7:8100/servlet/newDatabaseServlet";
          URL myUrl = new URL(servletUrl);
          servletConnection = myUrl.openConnection();
          servletConnection.setDoOutput(true);
          servletConnection.setUseCaches(false);
     /*     BufferedReader br = new BufferedReader(new InputStreamReader(servletConnection.getInputStream()));
String t = br.readLine();
je.setText(t);
     catch(Exception e) {
          e.printStackTrace();
/* ActionListener lst = new ActionListener() {
          public void actionPerformed(ActionEvent ae) {
               BufferedReader br = new BufferedReader(new InputStreamReader(servletConnection.getInputStream()));
               String t = br.readLine();
je.setText(t);
click.addActionListener(lst);
/*void String changeText(UrlConnection con) {
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream));
String t = br.readLine();
return t;
public String getInitialText()
     //String me = null;
     URLConnection textConnection = null;
     StringBuffer sb = new StringBuffer();
     try {
               String textUrl="http://pc7:8100/mycontent.txt";
               URL myUrl = new URL(textUrl);
               textConnection = myUrl.openConnection();
               textConnection.setDoInput(true);
               textConnection.setUseCaches(false);
               BufferedReader br = new BufferedReader(new InputStreamReader(textConnection.getInputStream()));
               // me = (String)servletConnection.getContent();
               String s = null;
               while((s = br.readLine())!=null) {
                    sb.append(s);
          catch(Exception e) {
                         e.printStackTrace();
               return sb.toString();
     public void saveText(String saveStr,JEditorPane je) {
          //String saveStr = je.getText();
          //String servletUrl="http://pc7:8100/servlet/newDatabaseServlet?event='saveText'&newsid='2'";
          //String servletGet="http://pc7:8100/servlet/newDatabaseServlet";
          String servletUrl="http://pc7:8100/servlet/newDatabaseServlet";
          //String servletUrl = servletGet + "?"
          //     + URLEncoder.encode("event") + "="
     // + URLEncoder.encode("saveText");
//     je.setText(servletUrl);
          try {
          URL servletURL = new URL(servletUrl);
          URLConnection servletConnection = servletURL.openConnection();
     //     servletConnection.setRequestProperty("event","saveText");
     servletConnection.setRequestProperty(
     "User-Agent","Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)");
          //System.out.println("from applet");
          servletConnection.setDoOutput(true);
          servletConnection.setUseCaches(false);
          //Propertiew prop = new Properties();
     //     prop.put("event","saveText");
          PrintStream out = new PrintStream(servletConnection.getOutputStream());
out.println("event");
out.close();
     catch(IOException e) {
          je.setText(e.toString());
kindly tell me what is the error
what is the best method of doing this
thanking u in anticipation
megha sood

omg O_o
We cannot debug your code, but:
Did you try the servlet directly from your browser? Does it work?
Best regards from Germany,
r.v.

Applet talking to Servlet - Please help!!!

Hi,
Below is the code for a very simple servlet. After that is the code for an applet that sends a query to the servelt. After that is the .html file that invoques the applet. At the bottom is my directory structure and the location of my files. This is what happens:
1. When I type in the browser: "http://localhost:8080/servlet/myApp/TestingServlet", two things happen:
a) I get the html greeting "Welcome to ..." on the browser.
b) The tomcat console displays "Hello from TestingServlet...".
2. When I type in the browser: "http://localhost:8080/myApp/TestApp.html", I expect to see the message in the tomcat window as in b) above; but nothing is displayed there. Apparently the applet doesn't find the servlet.
I hope you can point to me what I'm doing wrong.
Thanks,
Miguel
// this is the servlet code: TestingServlet.java
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class TestingServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
System.out.println("Hello form TestingServlet...");
PrintWriter out = response.getWriter();
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Servlet Testing</TITLE>");
out.println("</HEAD>");
out.println("<BODY>");
out.println("Welcome to the Servlet Testing Center");
out.println("</BODY>");
out.println("</HTML>");
// here is the applet: TestApp.java
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
import java.util.*;
public class TestApp extends JApplet {
public void init() {
String inline = "http://localhost:8080/servlet/myApp/TestingServlet";
debWindow.prnt("Request: " + inline);
try {
URL url = new URL(inline);
URLConnection connection = url.openConnection();
connection.setDoOutput(true);
} catch (IOException ex) {
// this is the TestApp.html file
<HTML> <HEAD>
<TITLE>Test/TITLE></HEAD>
<BODY>
<APPLET CODE="TestApp.class"
WIDTH = 500 HEIGHT = 400 MYSCRIPT>
</APPLET></BODY></HTML>
My directory structure is as follows (all in one computer):
tomcat
webapps
myApp
WEB-INF
classes
myApp contains TestApp.class and TestApp.html
classes contains TestingServlet.class

This bit:
} catch (IOException ex) {
}Insures that you will never see any helpful exception messages. Change it to
} catch (IOException ex) {
System.out.println("Error: " + ex.toSting());
}Or some such and then look at your Java console and see what it says. My guess is you are getting a security exception at or around the openConnection call.
Good luck
Lee

How can my applet communicate with servlet via HTTPS?

hi all,
I'm using jdk1.4.2_03. Tomcat 4.1.27/29.
My applet used to communicate to serlvet/JSP via http protocol. However, I wish to apply SSL in my tomcat standalone. Is there any implication towards my existing applet to servlet codes?
For example,
URL servletURL = new URL("http://www.myhost.com/Shopping");
// open connection between applet and servlet
URLConnection servletConnection = servletURL.openConnection();
servletConnection.setDoOutput(true); // allow connection do output
servletConnection.setDoInput(true); // allow connection do input
servletConnection.setUseCaches(false);
servletConnection.setRequestProperty("Content-Type", "application/octet-stream");
ObjectInputStream input = new ObjectInputStream(servletConnection.getInputStream());
resultset = (Vector)input.readObject(); //get Object from Servlet
input.close();

http://java.sun.com/j2se/1.4.2/docs/api/javax/net/ssl/HttpsURLConnection.html
I never used it though, you can check for some code here:
http://javaalmanac.com/cgi-bin/search/find.pl?words=HttpsURLConnection

Need Help in reading data from URLConnection in servlets

hi i created GUI which sends d username n password to the servlets via URLConnection.n am sending the same to Server program via sockets.but when i read d data in the servlet am getting only null value...need help here....
This is my button's ActionPerformed code
private void LoginActionPerformed(java.awt.event.ActionEvent evt) {
String uname = UserName.getText();
char [] pwd = PassWord.getPassword();
String pword = new String(pwd);
try
String url = "http://localhost:8080/MIMServlets/hit";
URL ucon = new URL(url);
URLConnection conn = ucon.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
          conn.setUseCaches (false);
conn.setDefaultUseCaches (false);
conn.setRequestProperty("Content-Type", "text/plain");
System.out.println(uname);
     System.out.println(pword);
     PrintWriter out = new PrintWriter( conn.getOutputStream() );
BufferedReader in = new BufferedReader(
new InputStreamReader(
conn.getInputStream()));
     out.print(uname);
out.print(pword);
     out.close();
String inputLine = in.readLine();
Status.setText(inputLine);// TODO add your handling code here:
}catch(MalformedURLException e)
System.out.println("Exception"+e);
catch(IOException e1)
System.out.println("Exception"+e1);
This is my Servlet code........
import java.io.*;
import java.net.*;
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MIMServlets extends HttpServlet
PrintWriter out,out1;
     BufferedReader in,in1;
     String host = "localhost";
     String fromServer = "";
     String username,password;
     int a;
     public void init()
out=null;
out1=null;
public void doPost(HttpServletRequest request,HttpServletResponse
               response)throws ServletException,IOException
          response.setContentType("text/html");
          out=response.getWriter();
          try{
          InetAddress address = InetAddress.getByName(host);
Socket theSocket = new Socket(address, 4444);
out1 = new PrintWriter(theSocket.getOutputStream(),true);
in = new BufferedReader(new InputStreamReader(theSocket.getInputStream()));
in1 = new BufferedReader(new InputStreamReader(request.getInputStream()));
          String username = in1.readLine();
          String password = in1.readLine();
System.out.println(username);
          System.out.println(password);
out1.println(username);
          out1.println(password);
          out1.println("Yahoo");
          out1.flush();
while ((fromServer = in.readLine()) != null)
out.println("From Server: " + fromServer);
          break;
     out1.close();
in.close();
theSocket.close();
     }catch(IOException e)
System.out.println("Exception");
System.exit(-1);
          public void destroy()
     out.close();
thanks in advance.......

Follow below example to using FM 'READ_TEXT'
DATA BEGIN OF i_tlines OCCURS 0.
        INCLUDE STRUCTURE tline.
DATA END   OF i_tlines.
DATA: w_textname(70) TYPE c.
w_textname = vbdkr-vbeln.
CALL FUNCTION 'READ_TEXT'
    EXPORTING
      client                        = sy-mandt
      id                            = 'Z006'
      language                      = 'E'
      name                          = w_textname
      object                        = 'VBBK'
    TABLES
      lines                         = i_tlines.
IF sy-subrc = 0.
    READ TABLE i_tlines INDEX 1.
    t_in-m1 = i_tlines-tdline.   "Now t_in_m1 will have the value
ENDIF.
Regards,
SaiRam

Sending a linked list from an applet to a servlet

Does anyone know how I can go about creating a file in an applet and then writing it to my server? The applet collects lots of useful data and I want to store it on my server (Apache 1.3.26 running on Windows XP) for use at a later date. To complicate things further, the applet stores all the data as a linkedList of double[][]'s.
I believe I may need to make a servlet to run serverside, but how do i send the linkedList to the servlet to create the file?
Anyone know how I'd go about doing this?
Cheers,
Dan

1 Use java.net.URL to connect to your server side servlet
2 Obtain the OutputStream of the URL by calling URL.openConnection().getOutputStream()
3 Wrap the OutputStram in step 2 with java.io.ObjectOutputStream
4 Write the data array in the applet to the ObjectOutputStream
5. In the servlet, read the data array using ObjectInputStream on the servlet request's input stream

Applet URLConnection to servlet

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