Help needed to pass Java 2 1.2 SCJP, please

I took the programmers exam (1.2) two weeks ago, I scored 57%. Though a respectable score, I was still gutted.
So now I am re-revising at the moment, trying to improve where I can.
Just wondered what anyone would recommend with the revision I should do just to improve things some more?
I feel a little dispondant at this time, so a little bit of advice will help me bounce back, bigger & better.
Thanks to everyone has helped me here at this forum, you are great, thanks, Dave.

I believe that it is possible to pass SCJP with a very high score.The books I studied helped me pass SCJP with a fairly high score, even with limited experience.
Based on my experience, I would suggest the following approach:
1. Learn the basics, make sure you can do simple stuff with Java. Make sure you can write a simple program easily--without having to spend a lot of time looking up, for example, how to declare a "main" method in an application. From your post, I'm guessing you may have already achieved this, but if you're still having trouble with the most basic stuff, you might want to get a hold of some good tutorials. There are some online on java.sun.com, and there are a number of excellent books. I used Just Java, by Peter van der Linden. If an updated version of the book is available, it's very useful.
2. Once you've achieved step 1, Get a good exam study guide. I used Complete Java 2 Certification Study Guide published by Sybex. This will help know specific topics will appear on the exam. More importantly, it will help you learn those specific topics in the depth required to earn a high score on the exam. This kind of book will also give you sample exam questions. Make sure you know the answers to all of the questions and that you know why those answers are correct.
3. I also found the Coriolis Exam Cram to be quite helpful. Once you know the exam topics in detail, this book will help you cram the core information you'll need to know. It also provides more sample questions. Study them carefull. Finally, it provides a single foldout cardboard sheet containing stuff to memorize for the exam.
I followed essentially the plan I've suggested, and it got me a score of 81%. You can do it too. In fact, you can probably beat me handily, if you don't forget (as I did) to study the "java.io" package!
I believe certification is well-worth the effort for those of us who are learning Java. No, I don't have hundreds of employers beating down my door now that I'm certified, but as I continue learning to use Java effectively, I'm able to move ahead confident in my knowledge of basics like constructors, arrays, Strings and what-not.
Go for it!
Don't give up!

Similar Messages

Help Needed in Creating Java Class and Java Stored Procedures

Hi,
Can anyone tell how can i create Java Class, Java Source and Java Resource in Oracle Database.
I have seen the Documents. But i couldn't able to understand it correctly.
I will be helpful when i get some Examples for creating a Java Class, Java Source and Stored Procedures with Java with details.
Is that possible to Create a Java class in the oracle Database itself ?.
Where are the files located for the existing Java Class ?..
Help Needed Please.
Thanks,
Murali.v

Hi Murali,
Heres a thread which discussed uploading java source file instead of runnable code on to the database, which might be helpful :
Configure deployment to a database to upload the java file instead of class
The files for the java class you created in JDev project is located in the myworks folder in jdev, eg, <jdev_home>\jdev\mywork\Application1\Project1\src\project1
Hope this helps,
Sunil..

Re: Help needed in passing values from workflow to Approve Forms

Dear Experts,
how do I pass values from a workflow to a step (Form) - approve form?
I am using a customized table structure as my data source (FORMCONTAINERELEMENT) but am stuck on how to access the data when i get to to the screen painter's flow logic... What am i missing? Can you give me a step by step example. the ones i see on the net are input fields that update the screen... nothing that shows value being passed from the outside.
I need to pass an exisitng value in the workflow into the form for approval of the the assigned agent.
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Thank you.

Hello !
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Help needed in passing parameters between custom pages

Hi,
Thanks in advance for your help gurus. I am developing 2 new pages and both should have link between them. WHen I click a button on page A it will navigate to page B, I am passing 2 parameters to page B. Page B is rendered with the help of values passed. Page B has 2 OAMessageLovInput Bean for which I am setting their values based on the values passed using
OAMessageTextInputBean custBean = (OAMessageTextInputBean)webBean.findIndexedChildRecursive("CustID");
custBean.setText(pageContext.getParameter("customerid"));
Everything works great till now. Now I want to change the customer id on page B using the LOV ie I select a new customer and I tab out of the field, still the customer id is not changed, it is set to the old one only to which the bean is set to.
What should I do get the new selected customer id to be populated on the LOV fields.
Thanks,
newbie

newbie,
You really do not need to explicitly set the customer Id through code. Just create a new LOV Mapping and make its return value to the MessageTextInputBean i.e CustID on base page and Lov Region Item would be the CustomerID of the Lov Table region.
Create Custome ID in LOV Table region and set its render property to false. I am assuming that the custId is present in the LOV VO query.
Thanks
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Help Needed in passing parameter to cryst report

Hello everyone, I am trying to create a report for a single record and as such am trying to pass parameters to a crystal report but I am not sure exactly how to do this. This is my own method that I am employeeing. I do not want to create a data table and put all the info I need in there and then base a report off of it. I do not want to deal with loops and arrays right now. I just want to pass for example parameter JuvenileID = 1 to my crystal report, then create a command under the database expert and set the parameter for my command to the parameter I passed my crystal report. How would I go about in doing this? I am using VS 2010 C#. This is a windows application. I have a dataentry form that is already populated with the info needed for the report. I just need to pass all the controls.text values to the report and populate it that way.

I'm not sure if I fully understand the issue, but since you have all the data you need in a data entry form that is already populated, why don't you simple create an ADO .NET Dataset and pass that to the report? Much easier to implement, faster execution with the small amount of data you have and less code.
Dataset sample app is here:
https://wiki.sdn.sap.com/wiki/display/BOBJ/CrystalReportsfor.NETSDK+Samples
More info on datasets is here:
[1511438 - How to use datasets to pass data to crystal reports|http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes_boj/sdn_oss_boj_bi/sap(bD1lbiZjPTAwMQ==)/bc/bsp/spn/scn_bosap/notes%7B6163636573733d36393736354636443646363436353344333933393338323636393736354637333631373036453646373436353733354636453735364436323635373233443330333033303331333533313331333433333338%7D.do].
- Ludek

Help needed in SAP Java- Print option

Anybody please help quickly,
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JAVA PROGRAM:
function PrintReport(typePaper) {
document.title ='Report';
if (typePaper == "0")
{var CurrentReportName = '&?mp=U&ptot=1&rtot=0&psize=' + escape(typePaper) + '&fsize=' + escape('39') + '&qtitle=' + escape(document.title);};
if (typePaper == "1")
{var CurrentReportName = '&?mp=U&ptot=1&rtot=0&psize=' + escape(typePaper) + '&fsize=' + escape('52') + '&qtitle=' + escape(document.title);};
CurrentReportName += '&ASOFDATE=' + escape(AsOfLabel.innerText);
var openCMD='<SAP_BW_URL>';
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openCMD += CurrentReportName;
openWindow(openCMD,'MainTitleNow',800,600);
The data provider here is REPORT_TEST1. Now it only prints the corresponding data for the data proviedr 1 i.e., REPORT_TEST1. I have a second table whose data comes from the data provider 2 when i use this HTML to print I want the second table contents from the data provider 2 (REPORT_TEST2)also to be printed simlutaneously.
Please help.
THANX A LOT,
SRINI

I call the two queries for different web items in the web template. I want a report to print them at once using the print structure in my previous message. If more information is needed please reply

Help Needed With A Java Installation

Hello,
I'm beyond being a novice with regards to Java. To be quite honest, I don't have the time right now to learn the language, nor do I have the need for anything other than what I am about to ask. I say this upfront to avoid unfriendly comments from people who may criticize my "laziness", NOT to sound disrespectful to those who post or answer questions in this forum.
With that said, here's my question...
I have a Sun/Cobalt RaQ4i server. I'd like to run a few free license Java games that I found on a website. The problem is, RaQ appliances do not ship with Java installed. I've been looking for some way to get it on my server for a few days now, with little luck. I've searched the Java help forums, the Sun/Cobalt forums and a few other help sites such as www.raqzone.com. (...which is why laziness is in quotes up there.) I did find this page... "http://developer.cobalt.com/java/java.raq.php". I have now installed both, the package and the update, on the server. However, the applet still does not run. I don't need the JSP feature, as my site is done in ASP. I don't know what a servlet is, but thought it might be similar to an applet, and would do the trick. *?* Apparently, I was wrong. Can ANYONE tell me what I need to do to get the desired results when I try to run a Java applet on my Cobalt RaQ?? I'd also be willing to be a fee to have it installed... correctly, of course! :)
Thanks in advance for any directions or guidance,
-Daniel
[email protected]

Assuming you're running Solaris, you can download the Java Runtime Environment (JRE) from http://java.sun.com/
One of the provided programs is appletviewer, which you will be able to use to run applets if they are on your local machine. I'm not entirely sure about Solaris, but the JRE may also install the Java Plugin to your browser so you can view applets in the browser.
Apologies if this was already mentioned in the link you provided - registration/login is required, so I didn't read it.
I hope you have more luck with your applets,
-Troy

Help needed with operating java on other programs

I have a fairly difficult (I think) question.
I am trying to create a program to enact itself on other programs.
It needs to perform 4 functions.
1) Open an exe (such as notepad)
2) Use the exe to open another file (such as a .txt)
3) Find the color of a specific pixel on the screen (ie, (300,800)) and
4) Pull a number from a field in the program
I would apprieciate any help on this, whether in the form of an answer, or a url that could help me with it.
thanks

you could try shell commands to the dos prompt like:
try {
     Properties systemProps = System.getProperties();
     String osVersion = systemProps.getProperty("os.name");
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          Runtime.getRuntime().exec("start \"notepad"");
     else if (osVersion.equals("Windows 95"))     {
          Runtime.getRuntime().exec("start \"notepad"");
     else { // win nt (2000 or xp)
          Runtime.getRuntime().exec("cmd.exe /c notepad");
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Help needed with JNI - java.lang.UnsatisfiedLinkError

I need some help with JNI. I am running on Sun Solaris 7 using their CC compiler. I wrote a simple java program that calls a native method to get a pid. Everything work until I use cout or cerr. Can anyone help? Below is what I am working with.
Note: The application works. The problem is when the C++ code tries to display text output.
My error log is as follows:
java Pid
Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/dew/test/libPid.so: ld.so.1: /usr/j2se/bin/../bin/sparc/native_threads/java: fatal: relocation error: file /home/dew/test/libPid.so: symbol __1cDstdEcerr_: referenced symbol not found
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1382)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1306)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at Pid.<clinit>(Pid.java:5)
Pid.java
========
* Pid: Obtains the pid from the jvm.
class Pid {
static { System.loadLibrary("Pid"); }
public native int getPid();
public static void main(String args[])
System.out.println("Before construction of Pid");
Pid z = new Pid();
System.out.println(z.getPid());
z = null;
Pid.cpp
=========
* Native method that obtains and returns the processid.
#include "Pid.h"
#include "unistd.h"
#include <iostream.h>
JNIEXPORT jint JNICALL Java_Pid_getPid(JNIEnv *env, jobject obj) {
/* cout << "Getting pid\n"; */
cerr << "Getting pid\n";
/* printf("Getting pid\n"); */
return getpid();

I forgot to include my build information.
JAVA_HOME = /usr/j2se/
LD_LIBRARY_PATH = ./:/opt/readline/lib:/opt/termcap/lib:/usr/bxpro/xcessory/lib:/${JAVA_HOME}/lib:/usr/RogueWave/workspaces/SOLARIS7/SUNPRO50/0d/lib:/usr/RogueWave/workspaces/SOLARIS7/SUNPRO50/3d/lib:/usr/sybase/lib
javac Pid.java
javah Pid
CC -G -I${JAVA_HOME}/include -I${JAVA_HOME}/include/solaris Pid.cpp -o libPid.so
Thanks again,
Don

Books & Tools: Help needed for Begining Java....

Hi,
I am a Computer science Graduate & working. I am new to Java but not Programming. I have some knowledge on OOPS concepts, .Net, Java, C# & web development.
I need Help To pick the Best Book/Books that can make me comfortable in programming Java & Understanding whole Java concept.
I followed many books but found they are not following the Right approach.
I would appreciate if someone can suggest me a Complete Book/Books, which you think have helped.
Thanks.

This is the starter set:
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.
James Gosling's The Java Programming Language. Gosling is
the creator of Java. It doesn't get much more authoritative than this.

Help needed about PDF - java

Hi everybody,
I just need to know if it's possible (and has been done already :) ) to take a pdf file and, using java, extract all the text boxes of it so that I can then be able to position them in a java application layout (using Swing).
I need to do that to extract all the information of the text:
- size of the page
- position of the text box
- size of the text
- font
- color
- other attributes
That's a subject that has already been discussed a lot, but I couldn't find a clear answer to that question in the forum.
I really need your help, because I already spent a lot of time searching for that, and now I start wondering if it's really possible...
Thanks a lot in advance for your help.
Myriam.

Hi Carlosbenfeito!
Thanks a lot for your answer!
I don't know if the pdf document is a pdf form... The only thing I know is that the pdf file I will have to extract the data from will be generated from a Quark document...
I will try to find out more.
In the same time, do you know where exactly I can find this Adobe jar? I had a look on their website, but I didn't find it...
Thanks for your help.
Myriam

Help needed with passing data between classes, graph building application?

Good afternoon please could you help me with a problem with my application, my head is starting to hurt?
I have run into some difficulties when trying to build an application that generates a linegraph?
Firstly i have a gui that the client will enter the data into a text area call jta; this data is tokenised and placed into a format the application can use, and past to a seperate class that draws the graph?
I think the problem lies with the way i am trying to put the data into co-ordinate form (x,y) as no line is being generated.
The following code is from the GUI:
+public void actionPerformed(ActionEvent e) {+
+// Takes data and provides program with CoOrdinates+
int[][]data = createData();
+// Set the data data to graph for display+
grph.showGrph(data);
+// Show the frame+
grphFrame.setVisible(true);
+}+
+/** set the data given to the application */+
+private int[][] createData() {+
+     //return data;+
+     String rawData = jta.getText();+
+     StringTokenizer tokens = new StringTokenizer(rawData);+
+     List list = new LinkedList();+
+     while (tokens.hasMoreElements()){+
+          String number = "";+
+          String token = tokens.nextToken();+
+          for (int i=0; i<token.length(); i++){+
+               if (Character.isDigit(token.charAt(i))){+
+                    number += token.substring(i, i+1);+
+               }+
+          }     +
+     }+
+     int [][]data = new int[list.size()/2][2];+
+     int index = -2;+
+     for (int i=0; i<data.length;i++){+
+               index += 2;+
+               data[0] = Integer.parseInt(+
+                         (list.get(index).toString()));+
+               data[i][1] = Integer.parseInt(+
+                         (list.get(index +1).toString()));+
+          }+
+     return data;+
The follwing is the coding for drawing the graph?
+public void showGrph(int[][] data) {+
this.data = data;
repaint();
+}     +
+/** Paint the graph */+
+protected void paintComponent(Graphics g) {+
+//if (data == null)+
+     //return; // No display if data is null+
super.paintComponent(g);
+// x is the start position for the first point+
int x = 30;
int y = 30;
for (int i = 0; i < data.length; i+) {+
+g.drawLine(data[i][0],data[i][1],data[i+1][0],data[i+1][1]);+
+}+
+}+

Thanks for that tip!
package LineGraph;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.util.List;
public class GUI extends JFrame
implements ActionListener {
private JTextArea Filejta;
private JTextArea jta;
private JButton jbtShowGrph = new JButton("Show Chromatogram");
public JButton jbtExit = new JButton("Exit");
public JButton jbtGetFile = new JButton("Search File");
private Grph grph = new Grph();
private JFrame grphFrame = new JFrame();   // Create a new frame to hold the Graph panel
public GUI() {
     JScrollPane pane = new JScrollPane(Filejta = new JTextArea("Default file location: - "));
     pane.setPreferredSize(new Dimension(350, 20));
     Filejta.setWrapStyleWord(true);
     Filejta.setLineWrap(true);
    // Store text area in a scroll pane
    JScrollPane scrollPane = new JScrollPane(jta = new JTextArea("\n\n Type in file location and name and press 'Search File' button: - "
              + "\n\n\n Data contained in the file will be diplayed in this Scrollpane "));
    scrollPane.setPreferredSize(new Dimension(425, 300));
    jta.setWrapStyleWord(true);
    jta.setLineWrap(true);
    // Place scroll pane and button in the frame
    JPanel jpButtons = new JPanel();
    jpButtons.setLayout(new FlowLayout());
    jpButtons.add(jbtShowGrph);
    jpButtons.add(jbtExit);
    JPanel searchFile = new JPanel();
    searchFile.setLayout(new FlowLayout());
    searchFile.add(pane);
    searchFile.add(jbtGetFile);
    add (searchFile, BorderLayout.NORTH);
    add(scrollPane, BorderLayout.CENTER);
    add(jpButtons, BorderLayout.SOUTH);
    // Exit Program
    jbtExit.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent e) {
       System.exit(0);
    // Read Files data contents
     jbtGetFile.addActionListener(new ActionListener(){
     public void actionPerformed( ActionEvent e) {
               String FileLoc = Filejta.getText();
               LocateFile clientsFile;
               clientsFile = new LocateFile(FileLoc);
                    if (FileLoc != null){
                         String filePath = clientsFile.getFilePath();
                         String filename = clientsFile.getFilename();
                         String DocumentType = clientsFile.getDocumentType();
     public String getFilecontents(){
          String fileString = "\t\tThe file contains the following data:";
     return fileString;
     // Register listener     // Create a new frame to hold the Graph panel
    jbtShowGrph.addActionListener(this);
    grphFrame.add(grph);
    grphFrame.pack();
    grphFrame.setTitle("Chromatogram showing data contained in file \\filename");
/** Handle the button action */
public void actionPerformed(ActionEvent e) {
    // Takes data and provides program with CoOrdinates
    int[][]data = createData();
    // Set the data data to graph for display
    grph.showGrph(data);
    // Show the frame
    grphFrame.setVisible(true);
/** set the data given to the application */
private int[][] createData() {
       String rawData = jta.getText();
       StringTokenizer tokens = new StringTokenizer(rawData);
       List list = new LinkedList();
       while (tokens.hasMoreElements()){
            String number = "";
            String token = tokens.nextToken();
            for (int i=0; i<token.length(); i++){
                 if (Character.isDigit(token.charAt(i))){
                      number += token.substring(i, i+1);
       int [][]data = new int[list.size()/2][2];
       int index = -2;
       for (int i=0; i<data.length;i++){
                 index += 2;
                 data[0] = Integer.parseInt(
                         (list.get(index).toString()));
               data[i][1] = Integer.parseInt(
                         (list.get(index +1).toString()));
     return data;
public static void main(String[] args) {
GUI frame = new GUI();
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("Clients Data Retrival GUI");
frame.pack();
frame.setVisible(true);
package LineGraph;
import javax.swing.*;
import java.awt.*;
public class Grph extends JPanel {
     private int[][] data;
/** Set the data and display Graph */
public void showGrph(int[][] data) {
this.data = data;
repaint();
/** Paint the graph */
protected void paintComponent(Graphics g) {
//if (data == null)
     //return; // No display if data is null
super.paintComponent(g);
//Find the panel size and bar width and interval dynamically
int width = getWidth();
int height = getHeight();
//int intervalw = (width - 40) / data.length;
//int intervalh = (height - 20) / data.length;
//int individualWidth = (int)(((width - 40) / 24) * 0.60);
////int individualHeight = (int)(((height - 40) / 24) * 0.60);
// Find the maximum data. The maximum data
//int maxdata = 0;
//for (int i = 0; i < data.length; i++) {
//if (maxdata < data[i][0])
//maxdata = data[i][1];
// x is the start position for the first point
int x = 30;
int y = 30;
//draw a vertical axis
g.drawLine(20, height - 45, 20, (height)* -1);
// Draw a horizontal base line4
g.drawLine(20, height - 45, width - 20, height - 45);
for (int i = 0; i < data.length; i++) {
//int Value = i;
// Display a line
//g.drawLine(x, height - 45 - Value, individualWidth, height - 45);
g.drawLine(data[i][0],data[i][1],data[i+1][0],data[i+1][1]);
// Display a number under the x axis
g.drawString((int)(0 + i) + "", (x), height - 30);
// Display a number beside the y axis
g.drawString((int)(0 + i) + "", width - 1277, (y) + 900);
// Move x for displaying the next character
//x += (intervalw);
//y -= (intervalh);
/** Override getPreferredSize */
public Dimension getPreferredSize() {
return new Dimension(1200, 900);

Help needed with Sun Java Studio Creator and EJB in a Portlet Project

Hi
I have created an web-application with JSF in Sun Java Studio Creator 2. The web application uses a lot of EJB's which acts as the dataProviders. In a typical jsp page i have more that one data providers(the EJB's) getting used. When i run the project everything opens up properly in the browser and the application seems to be fine.
But when i create a JSP 168 Portlet project and do exactly the same thing for some reason the Apache Pluto(comes as the default Portlet Container with Studio Creator) conks off.
Then i started going ahead step by step:
1. First i created a portletpage and added only one dataProvider(EJB) and ran the project...It gets deployed properly in Pluto and the browser comes up and everything shows up fine.
2. Just to re-confirm i did the same thing with another dataProvider(EJB). So still we have just 1 EJB in the portlet page. As expected it also worked fiine.
3. Then when I added more that one dataProviders(EJBs) in the porlet page the Apache Pluto conks off(saying that Pluto is not available)
I tried doing a lot of things but nothing works...Surprisingly the same thing works when u create a JSF web Application project but the same thing does not work when u create a JSR 168 JSF Portlet Project...
Did anybody face the same problem..Is it a bug in the Studio Creator...Any help would be highly appreciated.

Hi,
There are a few discussion threads in the feedbackprograms portal for Creator 2 EA 2. The URL is:
https://feedbackprograms.sun.com/login.html
In the EA discussion forum you will find threads which discuss the concerned topic. In specific look for threads titled:
# Deploying Portlets
# Taking a JSC Portlet to Tomcat creates a Faces Mapping Error
# Problem with Pluto when trying to deploy a portlet
# Request: JSR-168 Portlet Project without JSF
We kindly request you to post your further queries related to EA in the above mentioned forum.
Cheers
Giri

Help needed to solve "java.io.NotSerializableException: java.util.Vector$1"

hi to all,
i am using a session less bean A to querry a Entity Bean B , which inturns calls another EntityBean C ,
finally a ' find' method is invoked on the EntityBean C, In this a vector is created which holds 3 different vectors at different indexes, now the problem i am facing is that when Enity Bean B is returning the final vector to the A , it's firing out a errors that :-
TRANSACTION COULD NOT BE COMPLETED: RemoteException occurred in server thread;
ested exception is:
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.ServerException: RemoteException occurred in server thread; nested exc
ption is:
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.ServerException: RemoteException occurred in server thread; nested exc
ption is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.io.NotSerializableException: java.util.Vector$1
<<no stack trace available>>
ur any help would be highly appricated to solve out this prob.
If i try to iterate through this vector it's gives IOR:0232003x343242344asdsd................................................blabla....................
thanxs in adavance
Deepak

Hi I think you are using the method elements() in a remote method.
This method can't be Serializable!! Because it returns an Interface. Interfaces are never Serializable.
Regards,
Peter

Help Needed on a java program

I am very new to java and our teacher has given us a program
that i am having quite a bit of trouble with. I was wondering if anyone could help me out.
This is the program which i have bolded.
{You will write a Java class to play the TicTacToe game. This program will have at least two data members, one for the status of the board and one to keep track of whose turn it is. All data members must be private. You will create a user interface that allows client code to play the game.
The user interface must include:
� Boolean xPlay(int num) which allows x to play in the square labeled by num. This function will return true if that play caused the game to end and false otherwise.
� Boolean oPlay(int num) which allows o to play in the square labeled by num. This function will return true if that play caused the game to end and false otherwise.
� Boolean isEmpty(int num) will check to see if the square labeled by num is empty.
� Void display() which displays the current game status to the screen.
� Char whoWon() which will return X, O, or C depending on the outcome of the game.
� You must not allow the same player to play twice in a row. Should the client code attempt to, xPlay or oPlay should print an error and do nothing else.
� Also calling whoWon when the game is not over should produce an error message and return a character other than X, O, or C.
� Client code for the moment is up to you. Assume you have two human players that can enter the number of the square in which they want to play.
Verifying user input WILL be done by the client code.}

This is the program which i have bolded.Hmmm, that doesn't look like any programming language I've ever seen. I guess you have the wrong forum here, because it isn't Java.
That looks like a natural-language programming language that directly understands a homework assignment. Either that, or you really did just post the assignment. You wouldn't have done that though, right?

Help needed to pass Java 2 1.2 SCJP, please

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