How to be familiar with Java

I am not a newer to Java.
Frankly, I am familiar with the basic principle of java.
But I don't know how to further my study.

That doesn't really tell us anything. "Familiar with the basic concept" has lots of interpretations, and beginners tend to think they're more skilled than they really are.
For beginner level stuff, check out the links below. If you find them too elementary, then you should have an idea of a particuar area you want to learn--sockets, web applications, database operations, etc.
If you just want to improve your overall skill, then study up on OO concepts, create some software, answer questions here and pay attention when you get corrected.
Beginner Resources
Sun's basic Java tutorial
Sun's New To Java Center. Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
http://javaalmanac.com. A couple dozen code examples that supplement The Java Developers Almanac.
jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
Bruce Eckel's Thinking in Java (Available online.)
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java.

Similar Messages

How to use connec with java 6.0 ?

I often use the function below to connect Database:
public Connection getConnection(){
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn=DriverManager.getConnection("jdbc:odbc:EmployeeManagerDB","sa","sa");
System.out.println("Get connection successfully!");
catch(Exception e){
System.out.println("Error: " +e);
return conn;
but now, with Java 6.0 . don't use "class.forName....for method"
can you tell me how to use it??
thanks !

but now, with Java 6.0 . don't use
"class.forName....for method" Where did you get this idea?He's perfectly correct. JDBC 4.0 takes advantage of the Java SE Service Provide mechanism in Java 6 to do away with the requirement. So, if you have Java 6 and a JDBC 4 driver (it's a mandatory feature) you simply omit the forName() call.
The only problem is that there aren't that many complete JDBC 4 drivers out there yet.

How to use Entrust with java application on unix platform

Hi all,
i have question regarding the use of Entrust with java application on unix
1)I want to use Entrust for encryption/decryption of the file in my core java application on unix platform.
What should be requiremnet for the same and how it is implemented?.
2) I want to Use Entrust for Authentication purpose in my java based web application on unix platform.
What are requirements for Entrust Authentication and how it is implemented ?

any one has solution?

How to realize them with Java Swing?

1.I want to realize the function - Save, which is similar with "save" in windows notepad - after clicking "save", a dialog box is poped up, then i can input the filename and save it. Is there any ready class like JFileChooser in Java Swing?
2.I want to set Font and color in the text area. I can do it now. But I must set the font and color b4 input the words. How can I do it like Windows Word - I just input my words, then I highlight them and select the font and colour....all highlighted words r change....can I don it with Java swing and how?
Thanks..

1.I want to realize the function - Save, which is
similar with "save" in windows notepad - after
clicking "save", a dialog box is poped up, then i can
input the filename and save it. Is there any ready
class like JFileChooser in Java Swing?JFileChooser is a Swing based dialog, use it for your problem.
>
2.I want to set Font and color in the text area. I can
do it now. But I must set the font and color b4 input
the words. How can I do it like Windows Word - I just
input my words, then I highlight them and select the
font and colour....all highlighted words r
change....can I don it with Java swing and how?
Thanks..I am currently working this, try the ElementIterator w/ the Document that your inputing, as you iterate throught the nodes, you modify the attribute sets there.
Hope this helps.
>

Do you know how to call RDF with java code?

Say me a tip!
Environment:
Linux, Reports 6i,java beans, jsp
My mission is to run a report with java code.
But I don't know how to.
Basic flow is :
On web browser, call jsp a program and
that jsp call a java module,
and the java module call a reports RDF with parameters
I don't need reponse message from rwcgi60 or rwrun60.

hello,
the easiest way is to use the regular HTTP request to either the servlet or the CGI to run a report request from within a java-class.
regards,
the oracle reports team --pw

Research - how to build OS with Java

I intend to build the basic functionality of an OS with Java.
Can anyone recommend a good book:
- that explains the OS achitecture in depth.
- gives a headstart to start programming OS concepts in Java

you only need to know two things:
- How to schedule threads
- How to create a file system

How import policy file with Java Web Start

hi everybody,
I wrote an application launched by Java Web Start.
This application encrypt data on the client side and POST them to the server.
To encrypt I use JCE packages including sunjce_provider.jar, jce1_2_1.jar and
local_policy.jar and US_export_policy.jar.
local_policy.jar and US_export_policy.jar are not packages, each of them contains
a policy file.
When I test encryption on local no problem, but when I test with Java Web Start
I've got this exception :
java.lang.ExceptionInInitializerError:
java.lang.SecurityException: Cannot set up certs for trusted CAs
It's because the application launched by Java Web Start doesn't find local_policy.jar
and US_export_policy.jar.
There's a problem in my JNLP file :
<jnlp spec="1.0+" href="http://myserver/sources/test.jnlp" codebase="http://myserver/sources">
 <information>
 <title>Java Web Start TEST</title>
 <vendor>NLE Intech</vendor>
 <description>cryptage then upload</description>
 </information>
 <security>
 <all-permissions/>
 </security>
 <resources>
 <j2se version="1.3" />
 <jar href="sunjce_provider.jar" />
 <jar href="jce1_2_1.jar" />
 <jar href="local_policy.jar" />
 <jar href="US_export_policy.jar" />
 </resources>
 <application-desc main-class="HelloWorldSwing" >
 <argument>c:\myfiletoencrypt</argument>
 </application-desc>
</jnlp>
thank you for your answer

Hi Nicolas,
If you migrate to JDK1.4 and use the signed Bouncy JAR, you could resolve the problem,
if you don't want to use unlimited cryptography.
See my posting on your other question.
Agnes
PS. There is a mistake in my other reply, the "local_policy.jar" and the other files must have
to go into JRE/LIB/SECURITY directory

How can i deal with java.security.AccessControlException?

Hi all, I need to implement JavaMail using Servlet and deploy throught J2EE deployment tool. But when i test out the servlet i will always encounter this exception thrown. How can i solve this?
java.security.AccessControlException: access denied (java.util.PropertyPermission * read,write)
This is the servlet i am testing. Please advise. Thanks in advance!
* @(#)JavaMailServlet.java 1.3 99/12/06
* Copyright 1998, 1999 Sun Microsystems, Inc. All Rights Reserved.
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
import java.io.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
* This is a servlet that demonstrates the use of JavaMail APIs
* in a 3-tier application. It allows the user to login to an
* IMAP store, list all the messages in the INBOX folder, view
* selected messages, compose and send a message, and logout.
* 
* Please note: This is NOT an example of how to write servlets!
* This is simply to show that JavaMail can be used in a servlet.
* 
* For more information on this servlet, see the
* JavaMailServlet.README.txt file.
* 
* For more information on servlets, see
* * http://java.sun.com/products/java-server/servlets/index.html
* @author Max Spivak
public class JavaMailServlet extends HttpServlet implements SingleThreadModel {
String protocol = "POP3";
String mbox = "INBOX";
* This method handles the "POST" submission from two forms: the
* login form and the message compose form. The login form has the
* following parameters: <code>hostname</code>, <code>username</code>,
* and <code>password</code>. The <code>send</code> parameter denotes
* that the method is processing the compose form submission.
public void doPost(HttpServletRequest req, HttpServletResponse res)
 throws ServletException, IOException {
// get the session
 HttpSession ssn = req.getSession(true);
 String send = req.getParameter("send");
String host = req.getParameter("hostname");
String user = req.getParameter("username");
String passwd = req.getParameter("password");
URLName url = new URLName(protocol, host, -1, mbox, user, passwd);
ServletOutputStream out = res.getOutputStream();
 res.setContentType("text/html");
 out.println("<html><body bgcolor=\"#CCCCFF\">");
 if (send != null) {
 // process message sending
 send(req, res, out, ssn);
 } else {
 // initial login
 // create
 MailUserData mud = new MailUserData(url);
 ssn.putValue("javamailservlet", mud);
 try {
 Properties props = System.getProperties();
 System.out.println("url");
 props.put("mail.smtp.host", host);
 Session session = Session.getDefaultInstance(props, null);
 session.setDebug(false);
 Store store = session.getStore(url);
 store.connect();
 Folder folder = store.getDefaultFolder();
 if (folder == null)
 throw new MessagingException("No default folder");
 folder = folder.getFolder(mbox);
 if (folder == null)
 throw new MessagingException("Invalid folder");
 folder.open(Folder.READ_WRITE);
 int totalMessages = folder.getMessageCount();
 Message[] msgs = folder.getMessages();
 FetchProfile fp = new FetchProfile();
 fp.add(FetchProfile.Item.ENVELOPE);
 folder.fetch(msgs, fp);
 // track who logged in
 System.out.println("Login from: " + store.getURLName());
 // save stuff into MUD
 mud.setSession(session);
 mud.setStore(store);
 mud.setFolder(folder);
 // splash
 out.print("<center>");
 out.print("");
 out.println("Welcome to JavaMail!</center>");
 // folder table
 out.println("<table width=\"50%\" border=0 align=center>");
 // folder name column header
 out.print("<tr><td width=\"75%\" bgcolor=\"#ffffcc\">");
 out.print("");
 out.println("FolderName</td> ");
 // msg count column header
 out.print("<td width=\"25%\" bgcolor=\"#ffffcc\">");
 out.print("");
 out.println("Messages</td> ");
 out.println("</tr>");
 // folder name
 out.print("<tr><td width=\"75%\" bgcolor=\"#ffffff\">");
 out.print("<a href=\"" + HttpUtils.getRequestURL(req) + "\">" +
 "Inbox" + "</a></td> ");
 // msg count
 out.println("<td width=\"25%\" bgcolor=\"#ffffff\">" +
 totalMessages + "</td>");
 out.println("</tr>");
 out.println("</table");
 } catch (Exception ex) {
 out.println(ex.toString());
 } finally {
 out.println("</body></html>");
 out.close();
* This method handles the GET requests for the client.
public void doGet (HttpServletRequest req, HttpServletResponse res)
 throws ServletException, IOException {
HttpSession ses = req.getSession(false); // before we write to out
ServletOutputStream out = res.getOutputStream();
 MailUserData mud = getMUD(ses);
 if (mud == null) {
 res.setContentType("text/html");
 out.println("<html><body>Please Login (no session)</body></html>");
 out.close();
 return;
 if (!mud.getStore().isConnected()) {
 res.setContentType("text/html");
 out.println("<html><body>Not Connected To Store</body></html>");
 out.close();
 return;
 // mux that takes a GET request, based on parameters figures
 // out what it should do, and routes it to the
 // appropriate method
 // get url parameters
 String msgStr = req.getParameter("message");
String logout = req.getParameter("logout");
 String compose = req.getParameter("compose");
 String part = req.getParameter("part");
 int msgNum = -1;
 int partNum = -1;
 // process url params
 if (msgStr != null) {
 // operate on message "msgStr"
 msgNum = Integer.parseInt(msgStr);
 if (part == null) {
 // display message "msgStr"
res.setContentType("text/html");
 displayMessage(mud, req, out, msgNum);
 } else if (part != null) {
 // display part "part" in message "msgStr"
 partNum = Integer.parseInt(part);
displayPart(mud, msgNum, partNum, out, res);
 } else if (compose != null) {
 // display compose form
 compose(mud, res, out);
} else if (logout != null) {
 // process logout
try {
mud.getFolder().close(false);
mud.getStore().close();
 ses.invalidate();
out.println("<html><body>Logged out OK</body></html>");
} catch (MessagingException mex) {
out.println(mex.toString());
 } else {
 // display headers
 displayHeaders(mud, req, out);
/* main method to display messages */
private void displayMessage(MailUserData mud, HttpServletRequest req,
 ServletOutputStream out, int msgNum)
 throws IOException {
 out.println("<html>");
out.println("<HEAD><TITLE>JavaMail Servlet</TITLE></HEAD>");
 out.println("<BODY bgcolor=\"#ccccff\">");
 out.print("<center>");
 out.println("Message " + (msgNum+1) + " in folder " +
 mud.getStore().getURLName() +
 "/INBOX</center>");
 try {
 Message msg = mud.getFolder().getMessage(msgNum);
 // first, display this message's headers
 displayMessageHeaders(mud, msg, out);
 // and now, handle the content
 Object o = msg.getContent();
 //if (o instanceof String) {
 if (msg.isMimeType("text/plain")) {
 out.println("<pre>");
 out.println((String)o);
 out.println("</pre>");
 //} else if (o instanceof Multipart){
 } else if (msg.isMimeType("multipart/*")) {
 Multipart mp = (Multipart)o;
 int cnt = mp.getCount();
 for (int i = 0; i < cnt; i++) {
 displayPart(mud, msgNum, mp.getBodyPart(i), i, req, out);
 } else {
 out.println(msg.getContentType());
 } catch (MessagingException mex) {
 out.println(mex.toString());
 out.println("</BODY></html>");
 out.close();
* This method displays a message part. <code>text/plain</code>
* content parts are displayed inline. For all other parts,
* a URL is generated and displayed; clicking on the URL
* brings up the part in a separate page.
private void displayPart(MailUserData mud, int msgNum, Part part,
 int partNum, HttpServletRequest req,
 ServletOutputStream out)
 throws IOException {
 if (partNum != 0)
 out.println("<hr>");
try {
 String sct = part.getContentType();
 if (sct == null) {
 out.println("invalid part");
 return;
 ContentType ct = new ContentType(sct);
 if (partNum != 0)
 out.println("Attachment Type: " +
 ct.getBaseType() + " ");
 if (ct.match("text/plain")) {
 // display text/plain inline
 out.println("<pre>");
 out.println((String)part.getContent());
 out.println("</pre>");
 } else {
 // generate a url for this part
 String s;
 if ((s = part.getFileName()) != null)
 out.println("Filename: " + s + " ");
 s = null;
 if ((s = part.getDescription()) != null)
 out.println("Description: " + s + " ");
 out.println("<a href=\"" +
 HttpUtils.getRequestURL(req) +
 "?message=" +
 msgNum + "&part=" +
 partNum + "\">Display Attachment</a>");
 } catch (MessagingException mex) {
 out.println(mex.toString());
* This method gets the stream from for a given msg part and
* pushes it out to the browser with the correct content type.
* Used to display attachments and relies on the browser's
* content handling capabilities.
private void displayPart(MailUserData mud, int msgNum,
 int partNum, ServletOutputStream out,
 HttpServletResponse res)
 throws IOException {
 Part part = null;
try {
 Message msg = mud.getFolder().getMessage(msgNum);
 Multipart mp = (Multipart)msg.getContent();
 part = mp.getBodyPart(partNum);
 String sct = part.getContentType();
 if (sct == null) {
 out.println("invalid part");
 return;
 ContentType ct = new ContentType(sct);
 res.setContentType(ct.getBaseType());
 InputStream is = part.getInputStream();
 int i;
 while ((i = is.read()) != -1)
 out.write(i);
 out.flush();
 out.close();
 } catch (MessagingException mex) {
 out.println(mex.toString());
* This is a utility message that pretty-prints the message
* headers for message that is being displayed.
private void displayMessageHeaders(MailUserData mud, Message msg,
 ServletOutputStream out)
 throws IOException {
 try {
 out.println("Date: " + msg.getSentDate() + " ");
Address[] fr = msg.getFrom();
if (fr != null) {
boolean tf = true;
out.print("From: ");
for (int i = 0; i < fr.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(fr));
tf = false;
out.println(" ");
Address[] to = msg.getRecipients(Message.RecipientType.TO);
if (to != null) {
boolean tf = true;
out.print("To: ");
for (int i = 0; i < to.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(to[i]));
tf = false;
out.println(" ");
Address[] cc = msg.getRecipients(Message.RecipientType.CC);
if (cc != null) {
boolean cf = true;
out.print("CC: ");
for (int i = 0; i < cc.length; i++) {
out.print(((cf) ? " " : ", ") + getDisplayAddress(cc[i]));
 cf = false;
out.println(" ");
 out.print("Subject: " +
 ((msg.getSubject() !=null) ? msg.getSubject() : "") +
 " ");
} catch (MessagingException mex) {
 out.println(msg.toString());
* This method displays the URL's for the available commands and the
* INBOX headerlist
private void displayHeaders(MailUserData mud,
 HttpServletRequest req,
ServletOutputStream out)
 throws IOException {
SimpleDateFormat df = new SimpleDateFormat("EE M/d/yy");
out.println("<html>");
out.println("<HEAD><TITLE>JavaMail Servlet</TITLE></HEAD>");
 out.println("<BODY bgcolor=\"#ccccff\"><hr>");
 out.print("<center>");
 out.println("Folder " + mud.getStore().getURLName() +
 "/INBOX</center>");
 // URL's for the commands that are available
 out.println("");
out.println("<a href=\"" +
 HttpUtils.getRequestURL(req) +
 "?logout=true\">Logout</a>");
out.println("<a href=\"" +
 HttpUtils.getRequestURL(req) +
 "?compose=true\" target=\"compose\">Compose</a>");
 out.println("");
 out.println("<hr>");
 // List headers in a table
out.print("<table cellpadding=1 cellspacing=1 "); // table
 out.println("width=\"100%\" border=1>"); // settings
 // sender column header
 out.println("<tr><td width=\"25%\" bgcolor=\"ffffcc\">");
 out.println("");
 out.println("Sender</td>");
 // date column header
 out.println("<td width=\"15%\" bgcolor=\"ffffcc\">");
 out.println("");
 out.println("Date</td>");
 // subject column header
 out.println("<td bgcolor=\"ffffcc\">");
 out.println("");
 out.println("Subject</td></tr>");
 try {
 Folder f = mud.getFolder();
 int msgCount = f.getMessageCount();
 Message m = null;
 // for each message, show its headers
 for (int i = 1; i <= msgCount; i++) {
m = f.getMessage(i);
 // if message has the DELETED flag set, don't display it
 if (m.isSet(Flags.Flag.DELETED))
 continue;
 // from
out.println("<tr valigh=middle>");
out.print("<td width=\"25%\" bgcolor=\"ffffff\">");
 out.println("" +
 ((m.getFrom() != null) ?
 m.getFrom()[0].toString() :
 "" ) +
 "</td>");
 // date
out.print("<td nowrap width=\"15%\" bgcolor=\"ffffff\">");
 out.println("" +
df.format((m.getSentDate()!=null) ?
 m.getSentDate() : m.getReceivedDate()) +
 "</td>");
 // subject & link
out.print("<td bgcolor=\"ffffff\">");
 out.println("" +
 "<a href=\"" +
 HttpUtils.getRequestURL(req) +
"?message=" +
i + "\">" +
((m.getSubject() != null) ?
 m.getSubject() :
 "No Subject") +
"</a>" +
"</td>");
out.println("</tr>");
 } catch (MessagingException mex) {
 out.println("<tr><td>" + mex.toString() + "</td></tr>");
 mex.printStackTrace();
 out.println("</table>");
 out.println("</BODY></html>");
 out.flush();
 out.close();
* This method handles the request when the user hits the
* Compose link. It send the compose form to the browser.
private void compose(MailUserData mud, HttpServletResponse res,
 ServletOutputStream out)
 throws IOException {
 res.setContentType("text/html");
 out.println(composeForm);
 out.close();
* This method processes the send request from the compose form
private void send(HttpServletRequest req, HttpServletResponse res,
 ServletOutputStream out, HttpSession ssn)
 throws IOException {
String to = req.getParameter("to");
 String cc = req.getParameter("cc");
 String subj = req.getParameter("subject");
 String text = req.getParameter("text");
 try {
 MailUserData mud = getMUD(ssn);
 if (mud == null)
 throw new Exception("trying to send, but not logged in");
 Message msg = new MimeMessage(mud.getSession());
 InternetAddress[] toAddrs = null, ccAddrs = null;
 if (to != null) {
 toAddrs = InternetAddress.parse(to, false);
 msg.setRecipients(Message.RecipientType.TO, toAddrs);
 } else
 throw new MessagingException("No \"To\" address specified");
 if (cc != null) {
 ccAddrs = InternetAddress.parse(cc, false);
 msg.setRecipients(Message.RecipientType.CC, ccAddrs);
 if (subj != null)
 msg.setSubject(subj);
 URLName u = mud.getURLName();
 msg.setFrom(new InternetAddress(u.getUsername() + "@" +
 u.getHost()));
 if (text != null)
 msg.setText(text);
 Transport.send(msg);
 out.println("<h1>Message sent successfully</h1></body></html>");
 out.close();
 } catch (Exception mex) {
 out.println("<h1>Error sending message.</h1>");
 out.println(mex.toString());
 out.println(" </body></html>");
// utility method; returns a string suitable for msg header display
private String getDisplayAddress(Address a) {
String pers = null;
String addr = null;
if (a instanceof InternetAddress &&
((pers = ((InternetAddress)a).getPersonal()) != null)) {
 addr = pers + " "+"<"+((InternetAddress)a).getAddress()+">";
} else
addr = a.toString();
return addr;
// utility method; retrieve the MailUserData
// from the HttpSession and return it
private MailUserData getMUD(HttpSession ses) throws IOException {
 MailUserData mud = null;
 if (ses == null) {
 return null;
 } else {
 if ((mud = (MailUserData)ses.getValue("javamailservlet")) == null){
 return null;
 return mud;
public String getServletInfo() {
return "A mail reader servlet";
* This is the HTML code for the compose form. Another option would
* have been to use a separate html page.
private static String composeForm = "<HTML><HEAD><TITLE>JavaMail Compose</TITLE></HEAD><BODY BGCOLOR=\"#CCCCFF\"><FORM ACTION=\"/servlet/JavaMailServlet\" METHOD=\"POST\"><input type=\"hidden\" name=\"send\" value=\"send\">JavaMail Compose Message<TABLE BORDER=\"0\" WIDTH=\"100%\"><TR><TD WIDTH=\"16%\" HEIGHT=\"22\"> To:</TD><TD WIDTH=\"84%\" HEIGHT=\"22\"><INPUT TYPE=\"TEXT\" NAME=\"to\" SIZE=\"30\"> (separate addresses with commas)</TD></TR><TR><TD WIDTH=\"16%\">CC:</TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"cc\" SIZE=\"30\"> (separate addresses with commas)</TD></TR><TR><TD WIDTH=\"16%\">Subject:</TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"subject\" SIZE=\"55\"></TD></TR><TR><TD WIDTH=\"16%\"> </TD><TD WIDTH=\"84%\"><TEXTAREA NAME=\"text\" ROWS=\"15\" COLS=\"53\"></TEXTAREA></TD></TR><TR><TD WIDTH=\"16%\" HEIGHT=\"32\"> </TD><TD WIDTH=\"84%\" HEIGHT=\"32\"><INPUT TYPE=\"SUBMIT\" NAME=\"Send\" VALUE=\"Send\"><INPUT TYPE=\"RESET\" NAME=\"Reset\" VALUE=\"Reset\"></TD></TR></TABLE></FORM></BODY></HTML>";
* This class is used to store session data for each user's session. It
* is stored in the HttpSession.
class MailUserData {
URLName url;
Session session;
Store store;
Folder folder;
public MailUserData(URLName urlname) {
 url = urlname;
public URLName getURLName() {
 return url;
public Session getSession() {
 return session;
public void setSession(Session s) {
 session = s;
public Store getStore() {
 return store;
public void setStore(Store s) {
 store = s;
public Folder getFolder() {
 return folder;
public void setFolder(Folder f) {
 folder = f;

You posted a thousand lines of badly-formatted code and didn't have the sense to say which one had the exception.
My guess is that it was this one:Session session = Session.getDefaultInstance(props, null);because that happened to me. I fixed it by calling getInstance instead of getDefaultInstance.
However if that isn't the problem, how about spending a few seconds to post a less useless question?

How do I bundle with Java Desktop System?

My software is the best in class. How can I bundle it with the Java Desktop System?

Sun product managers see all the applications that successfully pass self-certification. Very few applications are bundled directly on the Java Desktop System, but certified apps can take advantage of a number of sales and co-marketing benefits: see http://sdc.sun.com/javadesktopsystem/

HOw to do this with JAVA

http://aycu29.webshots.com/image/37828/2005173359849159001_fs.jpg
Hi! I am new in java ,How can i build some thing like that in above?
Edited by: mjava on Dec 4, 2007 7:26 PM

If you do want TCP packet sniffing, I'm afraid Java networking API doesn't support such low-level. The GUI should be easier though.

How to connect network with java?

If I have already configured the network connection, my java application can work through it. But if I don't configure the network connection, how can my java application connect the nwtwork automatically? For example, popup a dialup dialog.
Please tell me how to solve it if you know, thanks a million.

I believe you will have to resort to native (C) code and JNI...
Chuck

How to sort taxonomy with Java api? Please Help

Can someone please help me out? I understand and can display the contents of a taxonomy. But I need it to be displayed in alphabetical order. Manual ordering does not exist for taxonomies. How do you sort a taxonomy in java?
The following snip of code can get the taxonomy and loop through it but isn't ordered correctly. Can some kind of comparator be used somehow? Points will be rewarded! Please help.
//Get connection to KMCM path
RID rid = RID.getRID(strPathToKMCM);
IResource resource = ResourceFactory.getInstance().getResource(rid, context);
ICollection collection = (ICollection) resource;
IResourceList children = collection.getChildren();
for (int i = 0; i < children.size(); i++){
IResource ir = children.get(i);

I'd also be interested to know how to do this.
I found this code section to sort by date, but couldn't change it to get it to work to sort alphabetically.
private void sortResouceListByDate(IResourceList resourceList) throws Exception {
// create property names to index properties
IPropertyName iPropSort = new PropertyName("http://sapportals.com/xmlns/cm", "modified");
//create a comparator to order the resource list
ResourcePropertyComparator rRPC = new ResourcePropertyComparator(iPropSort, false);
//order the resource list
resourceList.sort(rRPC);
Link where code was found:
https://forums.sdn.sap.com/thread.jspa?forumID=42&threadID=148468&messageID=1670970#1670970
We are using:
Portal 6.0.15.0.0
KM 6.0.15.4.0
Thanks!!

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