Newbie need help in compiling sample code

Hi,
I know this is a very newbie question.
Could someone please help me out on how to compile the sample code?
[root@localhost getting_started]# gcc -I/usr/src/db-4.7.25.NC/build_unix gettingstarted_common.c example_database_read.c
/tmp/ccMnYv8b.o: In function `open_database':
gettingstarted_common.c:(.text+0xeb): undefined reference to `db_create'
gettingstarted_common.c:(.text+0xfc): undefined reference to `db_strerror'
/tmp/ccMnYv8b.o: In function `databases_close':
gettingstarted_common.c:(.text+0x513): undefined reference to `db_strerror'
gettingstarted_common.c:(.text+0x565): undefined reference to `db_strerror'
gettingstarted_common.c:(.text+0x5ba): undefined reference to `db_strerror'
collect2: ld returned 1 exit status
Thanks alot.
JB

Hi,
I tried:
[root@localhost getting_started]# gcc -I/usr/src/db-4.7.25.NC/build_unix -L/usr/src/db-4.7.25.NC/build_unix -ldb gettingstarted_common.c example_database_read.c
/tmp/ccaHcwAy.o: In function `open_database':
gettingstarted_common.c:(.text+0xeb): undefined reference to `db_create'
gettingstarted_common.c:(.text+0xfc): undefined reference to `db_strerror'
/tmp/ccaHcwAy.o: In function `databases_close':
gettingstarted_common.c:(.text+0x513): undefined reference to `db_strerror'
gettingstarted_common.c:(.text+0x565): undefined reference to `db_strerror'
gettingstarted_common.c:(.text+0x5ba): undefined reference to `db_strerror'
collect2: ld returned 1 exit status
But it still does not work.
Any idea?
Sorry for the newbie question.
JB

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FullDOM.obj : error LNK2001: unresolved external symbol "public: void __thiscall CharacterData::deleteData(unsigned long,unsigned long)" (?deleteData@CharacterData@@QAEXKK@Z)
FullDOM.obj : error LNK2001: unresolved external symbol "public: void __thiscall CharacterData::insertData(unsigned long,unsigned char *)" (?insertData@CharacterData@@QAEXKPAE@Z)
FullDOM.obj : error LNK2001: unresolved external symbol "public: void __thiscall CharacterData::appendData(unsigned char *)" (?appendData@CharacterData@@QAEXPAE@Z)
FullDOM.obj : error LNK2001: unresolved external symbol "public: unsigned char * __thiscall CharacterData::substringData(unsigned long,unsigned long)" (?substringData@CharacterData@@QAEPAEKK@Z)
FullDOM.obj : error LNK2001: unresolved external symbol "public: unsigned int __thiscall CharacterData::getLength(void)" (?getLength@CharacterData@@QAEIXZ)
FullDOM.obj : error LNK2001: unresolved external symbol "public: void __thiscall CharacterData::setData(unsigned char *)" (?setData@CharacterData@@QAEXPAE@Z)
FullDOM.obj : error LNK2001: unresolved external symbol "public: unsigned char * __thiscall CharacterData::getData(void)" (?getData@CharacterData@@QAEPAEXZ)
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FullDOM.obj : error LNK2001: unresolved external symbol "public: class Node * __thiscall Node::replaceChild(class Node *)" (?replaceChild@Node@@QAEPAV1@PAV1@@Z)
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FullDOM.obj : error LNK2001: unresolved external symbol "public: int __thiscall Node::hasChildNodes(void)" (?hasChildNodes@Node@@QAEHXZ)
FullDOM.obj : error LNK2001: unresolved external symbol "public: unsigned char * __thiscall Attr::getValue(void)" (?getValue@Attr@@QAEPAEXZ)
FullDOM.obj : error LNK2001: unresolved external symbol "public: int __thiscall Attr::getSpecified(void)" (?getSpecified@Attr@@QAEHXZ)
FullDOM.obj : error LNK2001: unresolved external symbol "public: unsigned char * __thiscall Attr::getName(void)" (?getName@Attr@@QAEPAEXZ)
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FullDOM.obj : error LNK2001: unresolved external symbol "public: short __thiscall Node::getType(void)" (?getType@Node@@QAEFXZ)
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
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 hs1.setImage(rm.get("1st.gif"),3);
 hs1.setBounds(200,515,40,38);
 // same for button 2
 hs2 = new HotSpot(this);
 hs2.setImage(rm.get("prev.gif"),1);
 hs2.setImage(rm.get("prev.gif"),2);
 hs2.setImage(rm.get("prev.gif"),3);
 hs2.setBounds(250,515,40,38);
 // same for button 3
 hs3 = new HotSpot(this);
 hs3.setImage(rm.get("next.gif"),1);
 hs3.setImage(rm.get("next.gif"),2);
 hs3.setImage(rm.get("next.gif"),3);
 hs3.setBounds(300,515,40,38);
 // same for button 4
 hs4 = new HotSpot(this);
 hs4.setImage(rm.get("last.gif"),1);
 hs4.setImage(rm.get("last.gif"),2);
 hs4.setImage(rm.get("last.gif"),3);
 hs4.setBounds(350,515,40,38);
 // Place them
 add(hs1);
 add(hs2);
 add(hs3);
 add(hs4);
 // Repaint makes sure they are immediately visible.
 hs1.repaint();
 hs2.repaint();
 hs3.repaint();
 hs4.repaint();
 // Here the images are drawn.
 public void paint(Graphics g)
 g.setColor(Color.white);
 // When it is still loading show a loading message.
 if (!rm.isLoaded())
 g.drawString("loading file "+rm.getCurrent(),20,20);
 g.drawString("of "+rm.getTotalFiles(),20,40);
 g.drawString("Percent: "+rm.getPercent(),20,60);
 g.fillRect(20,80,rm.getPercent(),20);
 // Otherwise draw image1 or 2
 else
 if (x == 0)
 //place images using x-coordinates, y-coordinates.
 g.drawImage(rm.get("image0"),20,20,this);
 g.drawImage(rm.get("image0_1"),80+loopcounter,100+loopcounter,this);
 g.drawImage(rm.get("image0_2"),190+loopcounter,175+loopcounter,this);
 g.drawImage(rm.get("image0_3"),240+loopcounter,220+loopcounter,this);
 g.drawImage(rm.get("image0_4"),290+loopcounter,265+loopcounter,this);
 //g.drawImage(rm.get("image0_5"),150+loopcounter,285+loopcounter,this);
 g.drawImage(rm.get("image0_6"),400,370,200,100,this);
 g.drawImage(rm.get("image0_7"),100,300,this);
 loopcounter+=2;
 if (loopcounter == 50)
 loopcounter = 0;
 // if loopcounter+=2, coordinate=x+loopcounter, y+loopcounter.
 /* e.g. round 1, loopcounter=0, coordinate=1,3 */
 /* e.g. round 2, loopcounter=2, coordinate=3,5 */
 /* e.g. round 3, loopcounter=4, coordinate=7,9 */
 else if (x == 1)
 g.drawImage(rm.get("image1"),20,20,this);
 else if (x == 2)
 g.drawImage(rm.get("image2"),20,20,this);
 else if (x == 3)
 g.drawImage(rm.get("image3"),20,20,this);
 else if (x == 4)
 g.drawImage(rm.get("image4"),20,20,this);
 else if (x == 5)
 g.drawImage(rm.get("image5"),20,20,this);
 else if (x == 6)
 g.drawImage(rm.get("image6"),20,20,this);
 else if (x == 7)
 g.drawImage(rm.get("image7"),20,20,this);
 else if (x == 8)
 g.drawImage(rm.get("image8"),20,20,this);
 else if (x == 9)
 g.drawImage(rm.get("image9"),20,20,this);
 // This method is called when a button has been clicked.
 public void hotSpotEvent(HotSpot hs)
 // if it was button 1 show image1.
 if (hs == hs1)
 x = 1;
 // else show image2
 else if (hs == hs2)
 {x = x - 1;
 if ( x <= 1 ) x = 1;
 else if (hs == hs3)
 {x = x + 1;
 if ( x >= 9 ) x = 9;
 else
 x = 9;
 // and repaint to show them.
 repaint();
 // Necessary for RealMedia to load your images
 public Image loadImage(String file)
 return getImage(getCodeBase(),file);
 // Also required but not used this time.
 public AudioClip loadAudio(String file)
 return getAudioClip(getDocumentBase(),file);
/*new added code*/
 public void start() {
 if (scroller == null) {
 scroller = new Thread(this);
 scroller.start();
 public void stop() {
 if (scroller != null) {
 scroller.stop();
 scroller = null;
 public void run() {
 try {Thread.currentThread().sleep(100);}
 catch (InterruptedException e){}
 for (count=0; count <= 400; ) {
 try {Thread.currentThread().sleep(20);}
 catch (InterruptedException e){}
 rm.load();
 public void destroy(){;}
 public void update(Graphics g){paint(g);}
}

Thread scroller;//for looping purpose
**like whats does "thread scroller" means? Looping purpose? what's looping then?So, you don't know what a variable declaration is, and you don't know what looping is, and you're unable to find out other than by having somebody here tell you (your school has no library, no bookstore, and no access to google--only to the Java forums).
Either your school is absolutely backwards and useless, or you're a stupid lazy git who deserves to fail the course. Either way, somebody here posting an answer for you is not going to help you.
The following might.
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. This one has been getting a lot of very positive comments lately.

Need case studies and sample code for all concept of ABAP

Hello,
Can anybody provide me the case studies and sample code for learning different concepts in ABAP programming like: module pool, ALV, interactive reports, BDC, Smart Form etc.? As I want to do some practical application by which i can learn more.
Thanks & Regards,
Vikram Rawal

In this link You can find Step by Step Scren Shot document :
http://www.201interviewquestions.com/docs/User%20exits.ppt
http://erpgenie.com/abaptips/component/option,com_docman/task,doc_details/gid,27/

Reprots
http://www.sapgenie.com/abap/reports.htm
http://www.allsaplinks.com/material.html
http://www.sapdevelopment.co.uk/reporting/reportinghome.htm
http://www.sapfans.com/forums/viewtopic.php?t=58286
http://www.sapfans.com/forums/viewtopic.php?t=76490
http://www.sapfans.com/forums/viewtopic.php?t=20591
http://www.sapfans.com/forums/viewtopic.php?t=66305 - this one discusses which way should you use - ABAP Objects calls or simple function modules.
Dictionary
http://sapabap.iespana.es/sapabap/manuales/learnabap/
http://help.sap.com/saphelp_nw2004s/helpdata/en/43/41341147041806e10000000a1553f6/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eb6e446011d189700000e8322d00/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ea31446011d189700000e8322d00/frameset.htm
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCDWBDIC/BCDWBDIC.pdf
ABAP objects
Please check this online document (starting page 1291).
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCABA/BCABA.pdf
Also check this links as well.
http://help.sap.com/saphelp_nw2004s/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
http://www.futureobjects.de/content/intro_oo_e.html
http://www.sap-img.com/abap/business-add-in-you-need-to-understand-abap-oo-interface-concept.htm
/people/ravikumar.allampallam/blog/2005/02/11/abap-oo-in-action

SAPScripts
http://esnips.com/doc/1ff9f8e8-0a4c-42a7-8819-6e3ff9e7ab44/sapscripts.pdf
http://esnips.com/doc/1e487f0c-8009-4ae1-9f9c-c07bd953dbfa/script-command.pdf
http://esnips.com/doc/64d4eccb-e09b-48e1-9be9-e2818d73f074/faqss.pdf
http://esnips.com/doc/cb7e39b4-3161-437f-bfc6-21e6a50e1b39/sscript.pdf
http://esnips.com/doc/fced4d36-ba52-4df9-ab35-b3d194830bbf/symbols-in-scripts.pdf
http://esnips.com/doc/b57e8989-ccf0-40d0-8992-8183be831030/sapscript-how-to-calculate-totals-and-subtotals.htm
SAP SCRIPT FIELDS
http://help.sap.com/saphelp_erp2005vp/helpdata/en/d1/8033ea454211d189710000e8322d00/content.htm
scripts easy material
http://www.allsaplinks.com/sap_script_made_easy.html
Check these step-by-step links
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/ccab6730-0501-0010-ee84-de050a6cc287
https://sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/8fd773b3-0301-0010-eabe-82149bcc292e
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/3c5d9ae3-0501-0010-0090-bdfb2d458985
Smartforms material
http://www.sap-basis-abap.com/sapsf001.htm
http://www.sap-press.com/downloads/h955_preview.pdf
http://www.ossincorp.com/Black_Box/Black_Box_2.htm
http://www.sap-img.com/smartforms/sap-smart-forms.htm
http://www.sap-img.com/smartforms/smartform-tutorial.htm
http://www.sapgenie.com/abap/smartforms.htm
How to trace smartform
http://help.sap.com/saphelp_47x200/helpdata/en/49/c3d8a4a05b11d5b6ef006094192fe3/frameset.htm
http://www.help.sap.com/bp_presmartformsv1500/DOCU/OVIEW_EN.PDF
http://www.sap-img.com/smartforms/smart-006.htm
http://www.sap-img.com/smartforms/smartforms-faq-part-two.htm
Re: Need FAQ's
check most imp link
http://www.sapbrain.com/ARTICLES/TECHNICAL/SMARTFORMS/smartforms.html
step by step good ex link is....
http://smoschid.tripod.com/How_to_do_things_in_SAP/How_To_Build_SMARTFORMS/How_To_Build_SMARTFORMS.html

BAPI
http://help.sap.com/saphelp_46c/helpdata/en/9b/417f07ee2211d1ad14080009b0fb56/frameset.htm
http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci948835,00.html
Checkout !!
http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci948835,00.html
http://techrepublic.com.com/5100-6329-1051160.html#
http://www.sap-img.com/bapi.htm
http://www.sap-img.com/abap/bapi-conventions.htm
http://www.sappoint.com/abap/bapiintro.pdf
http://www.sapgenie.com/abap/bapi/example.htm
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCFESDE8/BCFESDE8.pdf
List of all BAPIs
http://www.planetsap.com/LIST_ALL_BAPIs.htm
http://www.sappoint.com/abap/bapiintro.pdf
http://www.sappoint.com/abap/bapiprg.pdf
http://www.sappoint.com/abap/bapiactx.pdf
http://www.sappoint.com/abap/bapilst.pdf
http://www.sappoint.com/abap/bapiexer.pdf
http://service.sap.com/ale
http://service.sap.com/bapi
http://www.planetsap.com/Bapi_main_page.htm
http://www.topxml.com/sap/sap_idoc_xml.asp
http://www.sapdevelopment.co.uk/
http://www.sapdevelopment.co.uk/java/jco/bapi_jco.pdf
ALV programs.
http://www.geocities.com/mpioud/Abap_programs.html
. How do I program double click in ALV?
http://www.sapfans.com/forums/viewtopic.php?t=11601
http://www.sapfans.com/forums/viewtopic.php?t=23010
How can I use ALV for reports that are going to be run in background?
http://www.sapfans.com/forums/viewtopic.php?t=83243
http://www.sapfans.com/forums/viewtopic.php?t=19224
ALV
http://www.sapfans.com/forums/viewtopic.php?t=58286
http://www.sapfans.com/forums/viewtopic.php?t=76490
http://www.sapfans.com/forums/viewtopic.php?t=20591
http://www.sapfans.com/forums/viewtopic.php?t=66305 - http://www.sapgenie.com/abap/reports.htm
http://www.allsaplinks.com/material.html
http://www.sapdevelopment.co.uk/reporting/reportinghome.htm
Top-of-page in ALV
selection-screen and top-of-page in ALV
ALV Group Heading
http://www.sap-img.com/fu037.htm
ALV
http://www.geocities.com/mpioud/Abap_programs.html

RFC Destination
Re: SM59

ALE/ IDOChttp://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm
http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc
http://www.netweaverguru.com/EDI/HTML/IDocBook.htm
http://www.sapgenie.com/sapedi/index.htm
http://www.sappoint.com/abap/ale.pdf
http://www.sappoint.com/abap/ale2.pdf
http://www.sapgenie.com/sapedi/idoc_abap.htm
http://www.allsaplinks.com/idoc_sample.html
http://www.sappoint.com/abap.html
http://www.netweaverguru.com/EDI/HTML/IDocBook.htm
http://www.sapgenie.com/sapedi/index.htm
http://www.allsaplinks.com/idoc_sample.html
Table Control
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/documents/a1-8-4/table%20control%20in%20abap.pdf

ABAP transactions
http://www.easymarketplace.de/transactions-a-e.php?Area=4soi&name=volker&pw=vg&
Regards,
Priyanka.

Need help with pie chart code

I am new to Java and am having problems and I am in need of some help. I have written the code for my Mortgage Calculator but do not know how to get my chart to work. I found an example of the chart code in my text book but I am not sure if I wrote it wrong. When I run the MortCalc code it compiles but the Pie Chart code won't. I tried to run the chart code by itself but it prints out another calculator. My question is 1.) Is my chart code written wrong? and 2.) How do i enter it into my MortCalc code so that I get my chart?
**Below I have included the assignment(so you know what I am doing exactly) and below that the pie chart code just in case you have questions. Thanks for any advice you can give.
**If you need the rest of the code I can post it too. It was too long to post with the pie chart code.
Assignment:
Write the program in Java(w/ a GUI) and have it calculate and display the mortgage payment amount from user input of the amount of the mortgage adn the user's selection from a menu of availible mortgage loans:
--7 yrs @ 5.35%
--15 yrs @ 5.5%
--30 yrs @ 5.75%
Use an array for the mortgage data for the different loans. Read the interst rates to fill the array from a sequential file. Display the mortgage payment amount followed by the loan balance and interest paid for each payment over the term of the loan. Add graphics in the form of a chart.Allow the user to loop back and enter a new amount and make a new selection of quit. Please insert comments in the program to document the program.
CODE:
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
//Class to hold a value for a slice
public class PieValue {
double value;
Color color;
public PieValue(double value, Color color) {
this.value = value;
this.color = color;
// slices is an array of values that represent the size of each slice.
public void drawPie(Graphics2D g, Rectangle area, PieValue[] slices) {
// Get total value of all slices
double total = 0.0D;
for (int i=0; i<slices.length; i++) {
total += slices.value;
// Draw each pie slice
double curValue = 0.0D;
int startAngle = 0;
for (int i=0; i<slices.length; i++) {
// Compute the start and stop angles
startAngle = (int)(curValue * 360 / total);
int arcAngle = (int)(slices[i].value * 360 / total);
// Ensure that rounding errors do not leave a gap between the first and last slice
if (i == slices.length-1) {
arcAngle = 360 - startAngle;
// Set the color and draw a filled arc
g.setColor(slices[i].color);
g.fillArc(area.x, area.y, area.width, area.height, startAngle, arcAngle);
curValue += slices[i].value;

// Draw each pie slice
double curValue = 0.0D;
int startAngle = 0;
for (int i=0; i<slices.length; i+) {
// Compute the start and stop angles
startAngle = (int)(curValue 360 / total);
int arcAngle = (int)(slices.value * 360 / total);Look here and i think you will find some syntax errors.
Count the brackets.

Need help determining compiling error

Good morning,
I need help finding the cause of a compiling error I receive. I have reviewed my code numerous times without any luck. I hope you guys might see something I am not! The entire file exceeds the limit I can post, so I am attaching it in 2 posts. Sorry for the inconvenience. The error and my code are posted below. Thank you for your help!
C:\StockTrackerDB.java:382: cannot find symbol
symbol : method add(java.lang.Boolean)
location: class java.util.ArrayList<java.lang.String>
 aList.add(new Boolean(rs.getBoolean("admin")));
^
1 error
Tool completed with exit code 1
import java.io.*;
import java.sql.*;
import java.util.*;
public class StockTrackerDB
 private Connection con = null;
 //Constructor; makes database connection
 public StockTrackerDB() throws ClassNotFoundException,SQLException
 if(con == null)
 String url = "jdbc:odbc:StockTracker";
 try
 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
 catch(ClassNotFoundException ex)
 throw new ClassNotFoundException(ex.getMessage() +
 "\nCannot locate sun.jdbc.odbc.JdbcOdbcDriver");
 try
 con = DriverManager.getConnection(url);
 catch(SQLException ex)
 throw new SQLException(ex.getMessage()+
 "\nCannot open database connection for "+url);
 // Close makes database connection; null reference to connection
 public void close() throws SQLException,IOException,ClassNotFoundException
 con.close();
 con = null;
 // Method to serialize object to byte array
 private byte[] serializeObj(Object obj) throws IOException
 ByteArrayOutputStream baOStream = new ByteArrayOutputStream();
 ObjectOutputStream objOStream = new ObjectOutputStream(baOStream);
 objOStream.writeObject(obj); // object must be Serializable
 objOStream.flush();
 objOStream.close();
 return baOStream.toByteArray(); // returns stream as byte array
 // Method to deserialize bytes from a byte array into an object
 private Object deserializeObj(byte[] buf) throws IOException, ClassNotFoundException
 Object obj = null;
 if(buf != null)
 ObjectInputStream objIStream = new ObjectInputStream(new ByteArrayInputStream(buf));
 obj = objIStream.readObject(); //IOException, ClassNotFoundException
 return obj;
 // Methods for adding a record to a table
 // add to the Stocks Table
 public void addStock(String stockSymbol, String stockDesc) throws SQLException, IOException, ClassNotFoundException
 Statement stmt = con.createStatement();
 stmt.executeUpdate("INSERT INTO Stocks VALUES ('"
 +stockSymbol+"'"
 +",'"+stockDesc+"')");
 stmt.close();
 // add to the Users table
 public boolean addUser(User user) throws SQLException,IOException,ClassNotFoundException
 boolean result = false;
 String dbUserID;
 String dbLastName;
 String dbFirstName;
 Password dbPswd;
 boolean isAdmin;
 dbUserID = user.getUserID();
 if(getUser(dbUserID) == null)
 dbLastName = user.getLastName();
 dbFirstName = user.getFirstName();
 Password pswd = user.getPassword();
 isAdmin = user.isAdmin();
 PreparedStatement pStmt = con.prepareStatement("INSERT INTO Users VALUES (?,?,?,?,?)");
 pStmt.setString(1, dbUserID);
 pStmt.setString(2, dbLastName);
 pStmt.setString(3, dbFirstName);
 pStmt.setBytes(4, serializeObj(pswd));
 pStmt.setBoolean(5, isAdmin);
 pStmt.executeUpdate();
 pStmt.close();
 result = true;
 else
 throw new IOException("User exists - cannot add.");
 return result;
 // add to the UserStocks table
 public void addUserStocks(String userID, String stockSymbol)
 throws SQLException,IOException,ClassNotFoundException
 Statement stmt = con.createStatement();
 stmt.executeUpdate("INSERT INTO UserStocks VALUES ('"
 +userID+"'"
 +",'"+stockSymbol+"')");
 stmt.close();
 // Methods for updating a record in a table
 // updating the Users table
 public boolean updUser(User user) throws SQLException, IOException, ClassNotFoundException
 boolean result = false;
 String dbUserID;
 String dbLastName;
 String dbFirstName;
 Password dbPswd;
 boolean isAdmin;
 dbUserID = user.getUserID();
 if(getUser(dbUserID) != null)
 dbLastName = user.getLastName();
 dbFirstName = user.getFirstName();
 Password pswd = user.getPassword();
 isAdmin = user.isAdmin();
 PreparedStatement pStmt = con.prepareStatement("UPDATE Users SET lastName = ?," + " firstName = ?, pswd = ?, admin = ? WHERE userID = ?");
 pStmt.setString(1, dbLastName);
 pStmt.setString(2, dbFirstName);
 pStmt.setBytes(3, serializeObj(pswd));
 pStmt.setBoolean(4, isAdmin);
 pStmt.setString(5, dbUserID);
 pStmt.executeUpdate();
 pStmt.close();
 result = true;
 else
 throw new IOException("User does not exist - cannot update.");
 return result;
 }

 // Methods for deleting a record from a table
 // delete a record from the Stocks table
 private void delStock(String stockSymbol) throws SQLException,IOException,ClassNotFoundException
 Statement stmt = con.createStatement();
 stmt.executeUpdate("DELETE FROM Stocks WHERE "
 +"symbol = '"+stockSymbol+"'");
 stmt.close();
 // delete a record from the Users table
 public void delUser(User user) throws SQLException,IOException,ClassNotFoundException
 String dbUserID;
 String stockSymbol;
 Statement stmt = con.createStatement();
 try
 con.setAutoCommit(false);
 dbUserID = user.getUserID();
 if(getUser(dbUserID) != null) // verify user exists in database
 ResultSet rs1 = stmt.executeQuery("SELECT userID, symbol "
 +"FROM UserStocks WHERE userID = '"+dbUserID+"'");
 while(rs1.next())
 try
 stockSymbol = rs1.getString("symbol");
 delUserStocks(dbUserID, stockSymbol);
 catch(SQLException ex)
 throw new SQLException("Deletion of user stock holding failed: " +ex.getMessage());
 } // end of loop thru UserStocks
 try
 { // holdings deleted, now delete user
 stmt.executeUpdate("DELETE FROM Users WHERE "
 +"userID = '"+dbUserID+"'");
 catch(SQLException ex)
 throw new SQLException("User deletion failed: "+ex.getMessage());
 else
 throw new IOException("User not found in database - cannot delete.");
 try
 con.commit();
 catch(SQLException ex)
 throw new SQLException("Transaction commit failed: "+ex.getMessage());
 catch (SQLException ex)
 try
 con.rollback();
 catch (SQLException sqx)
 throw new SQLException("Transaction failed then rollback failed: " +sqx.getMessage());
 // Transaction failed, was rolled back
 throw new SQLException("Transaction failed; was rolled back: " +ex.getMessage());
 stmt.close();
 // delete a record from the UserStocks table
 public void delUserStocks(String userID, String stockSymbol) throws SQLException,IOException,ClassNotFoundException
 Statement stmt = con.createStatement();
 ResultSet rs;
 stmt.executeUpdate("DELETE FROM UserStocks WHERE "
 +"userID = '"+userID+"'"
 +"AND symbol = '"+stockSymbol+"'");
 rs = stmt.executeQuery("SELECT symbol FROM UserStocks "
 +"WHERE symbol = '"+stockSymbol+"'");
 if(!rs.next()) // no users have this stock
 delStock(stockSymbol);
 stmt.close();
 // Methods for listing record data from a table
 // Ordered by:
 // methods that obtain individual field(s),
 // methods that obtain a complete record, and
 // methods that obtain multiple records
 // Methods to access one or more individual fields
 // get a stock description from the Stocks table
 public String getStockDesc(String stockSymbol) throws SQLException, IOException, ClassNotFoundException
 Statement stmt = con.createStatement();
 String stockDesc = null;
 ResultSet rs = stmt.executeQuery("SELECT symbol, name FROM Stocks "
 +"WHERE symbol = '"+stockSymbol+"'");
 if(rs.next())
 stockDesc = rs.getString("name");
 rs.close();
 stmt.close();
 return stockDesc;
 // Methods to access a complete record
 // get User data from the Users table
 public User getUser(String userID) throws SQLException,IOException,ClassNotFoundException
 Statement stmt = con.createStatement();
 String dbUserID;
 String dbLastName;
 String dbFirstName;
 Password dbPswd;
 boolean isAdmin;
 byte[] buf = null;
 User user = null;
 ResultSet rs = stmt.executeQuery("SELECT * FROM Users WHERE userID = '" +userID+"'");
 if(rs.next())
 dbUserID = rs.getString("userID");
 dbLastName = rs.getString("lastName");
 dbFirstName = rs.getString("firstName");
 // Do NOT use with JDK 1.2.2 using JDBC-ODBC bridge as
 // SQL NULL data value is not handled correctly.
 buf = rs.getBytes("pswd");
 dbPswd=(Password)deserializeObj(buf);
 isAdmin = rs.getBoolean("admin");
 user = new User(dbUserID,dbFirstName,dbLastName,dbPswd,isAdmin);
 rs.close();
 stmt.close();
 return user; // User object created for userID
 // Methods to access a list of records
 // get a list of selected fields for all records from the Users Table
 public ArrayList listUsers() throws SQLException,IOException,ClassNotFoundException
 ArrayList<String> aList = new ArrayList<String>();
 Statement stmt = con.createStatement();
 ResultSet rs = stmt.executeQuery("SELECT userID, firstName, lastName, admin "
 +"FROM Users ORDER BY userID");
 while(rs.next())
 aList.add(rs.getString("userID"));
 aList.add(rs.getString("firstName"));
 aList.add(rs.getString("lastName"));
 aList.add(new Boolean(rs.getBoolean("admin")));
 rs.close();
 stmt.close();
 return aList;
 // get all fields in all records for a given user from the UserStocks table
 public ArrayList listUserStocks(String userID) throws SQLException, IOException, ClassNotFoundException
 ArrayList<String> aList = new ArrayList<String>();
 Statement stmt = con.createStatement();
 ResultSet rs = stmt.executeQuery("SELECT * FROM UserStocks "
 +"WHERE userID = '"+userID+"' ORDER BY symbol");
 while(rs.next())
 aList.add(rs.getString("symbol"));
 rs.close();
 stmt.close();
 return aList;
}

Newbie needs help with Flex app

Hi there. I am very new to Flex and also fairly new to
programming although I do have a little experience.
I am trying to create an app which stores code snippets or
common text I tend to use every day in my documents and emails.
So basically I need help on a design level. I can refer to
the developer's manual for exact instructions for commands, but I
need to know what to code first.
The app will consist of:
-a tree directory structure where I can create groups.
-There will be a basic text editor where I input all my data,
basic text formatting options (font, bullets etc) would be a bonus.
-A search function
-Finally it will ideally allow multiple client apps write to
a central database file over a network
Can anyone suggest how I should approach such a project?
Or are there any tutorials / source files which demonstrate
each bullet point?
thanks.

Hey jono,
I'm new too. But I think I might know the right components.
If you google any of these + flex 3 you should get some
decent documentation
tree - advanced dataGrid component
basic text editor - rich text editor component
search function - well, you're gonna need to read up on
arrays, and arraycollection. Once you get that stuff working, you
can write up a function to search for a string in an array.
network functionality - HTTPService, you can dump the
datagrid into a database, and have it load the database when you
open up the application.
Give these things a shot, tutorials / sources will come with
the google searches.

Need help fine tuning my code

This program im making is eventualy going to end up as an attack calculator; the thing is i need help finetuning my program so that a) when it is run it will start at the very top of the window ancestory. b) the 2 windows are locked onto the same ancestory (ancestory is the position of the window relitive to the others: ie the window that is on top of another is higher on the ancestory). this code runs and should easily cut and paste.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class AttackCalculator implements ActionListener{
 * Create the GUI and show it. For thread safety,
 * this method should be invoked from the
 * event-dispatching thread.
 "Use the legend below for the correct government number. ",
 "Legend: Democracy = 1, Communism = 2, Autocracy = 3, Fascism = 4, ",
 "Monarchy = 5, Pacifism = 6, Technocracy = 7, Theocracy = 8, ",
 "Anarchy = 9, Corpocracy = 10, Ochlocracy = 11, Physiocracy = 12 ",
 public static void createAndShowGUI(){
 String[] labels = {
 "Enter how many troops you have: ", "Enter how many tanks you have: ",
 "Enter how many jets you have: ", "Enter how many ships you have: ",
 "Enter your government type (1-12 refer above): ","Enter your health(%)",
 "Enter your stage number (1-4): ", "Enter how many troops your enemy has: ",
 "Enter how many tanks your enemy has: ", "Enter how many jets your enemy has: ",
 "Enter how many ships your enemy has: ", "Enter your enemy's government type (1-12 refer above): ",
 "Enter your enemy's stage number (1-4): ", "Enter your enemy health: "};
 int numPairs = labels.length;
 JTextField[] textField = {
 new JTextField( 10 ), new JTextField( 1 ), new JTextField( 1 ), new JTextField( 1 ), new JTextField( 1 ),
 new JTextField( 1 ), new JTextField( 10 ), new JTextField( 1 ), new JTextField( 1 ), new JTextField( 1 ),
 new JTextField( 1 ), new JTextField( 1 ), new JTextField( 1 ), new JTextField( 1 )};
 //Create and populate the panel.
 JPanel p = new JPanel(new SpringLayout());
 for (int i = 0; i < numPairs; i++) {
 JLabel l = new JLabel(labels, JLabel.TRAILING);
p.add(l);
l.setLabelFor(textField[i]);
p.add(textField[i]);
JLabel l = new JLabel("Your union has 2+ members", JLabel.TRAILING);
p.add(l);
JCheckBox checkBox = new JCheckBox("", false);
l.setLabelFor( checkBox );
p.add(checkBox );
JLabel la = new JLabel("Enemy's union 2+ members", JLabel.TRAILING);
p.add(la);
JCheckBox jcheckBox = new JCheckBox("", false);
la.setLabelFor( jcheckBox );
p.add(jcheckBox);
JButton calculate = new JButton("Calculate");
p.add(calculate);
//Lay out the panel.
SpringUtilities.makeCompactGrid(p,
16, 2, //rows, cols
6, 6, //initX, initY
6, 6); //xPad, yPad
JFrame contentPane = new JFrame();
contentPane.setSize(420, 105);
JLabel title1 = new JLabel("Use the legend below for the correct government number. \n");
JLabel title2 = new JLabel("Legend: Democracy = 1, Communism = 2, Autocracy = 3, Fascism = 4, \n");
JLabel title3 = new JLabel("Monarchy = 5, Pacifism = 6, Technocracy = 7, Theocracy = 8, \n");
JLabel title4 = new JLabel("Anarchy = 9, Corpocracy = 10, Ochlocracy = 11, Physiocracy = 12 " );
contentPane.add( title1 );
contentPane.add( title2 );
contentPane.add( title3 );
contentPane.add( title4 );
SpringLayout layout = new SpringLayout();
contentPane.setLayout(layout);
//Adjust constraints for the label so it's at (5,5).
layout.putConstraint(SpringLayout.WEST, title1,
5,
SpringLayout.WEST, contentPane);
layout.putConstraint(SpringLayout.NORTH, title1,
5,
SpringLayout.NORTH, contentPane);
//Adjust constraints for the label so it's at (5,5).
layout.putConstraint(SpringLayout.WEST, title2,
5,
SpringLayout.WEST, contentPane);
layout.putConstraint(SpringLayout.NORTH, title2,
20,
SpringLayout.NORTH, contentPane);
//Adjust constraints for the label so it's at (5,5).
layout.putConstraint(SpringLayout.WEST, title3,
5,
SpringLayout.WEST, contentPane);
layout.putConstraint(SpringLayout.NORTH, title3,
35,
SpringLayout.NORTH, contentPane);
//Adjust constraints for the label so it's at (5,5).
layout.putConstraint(SpringLayout.WEST, title4,
5,
SpringLayout.WEST, contentPane);
layout.putConstraint(SpringLayout.NORTH, title4,
50,
SpringLayout.NORTH, contentPane);
//Create and set up the window.
JFrame frame1 = new JFrame("Endless Revolution Attack Calculator");
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Set up the content pane.
p.setOpaque(true); //content panes must be opaque
frame1.setContentPane(p);
//Display the window.
frame1.pack();
frame1.setLocationRelativeTo( null );
frame1.setVisible(true);
contentPane.setLocationRelativeTo( null );
contentPane.setVisible(true);
public void actionPerformed( ActionEvent evt){
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
here is the second class needed to run
import javax.swing.*;
import javax.swing.SpringLayout;
import java.awt.*;
* A 1.4 file that provides utility methods for
* creating form- or grid-style layouts with SpringLayout.
* These utilities are used by several programs, such as
* SpringBox and SpringCompactGrid.
public class SpringUtilities {
 * A debugging utility that prints to stdout the component's
 * minimum, preferred, and maximum sizes.
 public static void printSizes(Component c) {
 System.out.println("minimumSize = " + c.getMinimumSize());
 System.out.println("preferredSize = " + c.getPreferredSize());
 System.out.println("maximumSize = " + c.getMaximumSize());
 * Aligns the first <code>rows</code> * <code>cols</code>
 * components of <code>parent</code> in
 * a grid. Each component is as big as the maximum
 * preferred width and height of the components.
 * The parent is made just big enough to fit them all.
 * @param rows number of rows
 * @param cols number of columns
 * @param initialX x location to start the grid at
 * @param initialY y location to start the grid at
 * @param xPad x padding between cells
 * @param yPad y padding between cells
 public static void makeGrid(Container parent,
 int rows, int cols,
 int initialX, int initialY,
 int xPad, int yPad) {
 SpringLayout layout;
 try {
 layout = (SpringLayout)parent.getLayout();
 } catch (ClassCastException exc) {
 System.err.println("The first argument to makeGrid must use SpringLayout.");
 return;
 Spring xPadSpring = Spring.constant(xPad);
 Spring yPadSpring = Spring.constant(yPad);
 Spring initialXSpring = Spring.constant(initialX);
 Spring initialYSpring = Spring.constant(initialY);
 int max = rows * cols;
 //Calculate Springs that are the max of the width/height so that all
 //cells have the same size.
 Spring maxWidthSpring = layout.getConstraints(parent.getComponent(0)).
 getWidth();
 Spring maxHeightSpring = layout.getConstraints(parent.getComponent(0)).
 getWidth();
 for (int i = 1; i < max; i++) {
 SpringLayout.Constraints cons = layout.getConstraints(
 parent.getComponent(i));
 maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth());
 maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight());
 //Apply the new width/height Spring. This forces all the
 //components to have the same size.
 for (int i = 0; i < max; i++) {
 SpringLayout.Constraints cons = layout.getConstraints(
 parent.getComponent(i));
 cons.setWidth(maxWidthSpring);
 cons.setHeight(maxHeightSpring);
 //Then adjust the x/y constraints of all the cells so that they
 //are aligned in a grid.
 SpringLayout.Constraints lastCons = null;
 SpringLayout.Constraints lastRowCons = null;
 for (int i = 0; i < max; i++) {
 SpringLayout.Constraints cons = layout.getConstraints(
 parent.getComponent(i));
 if (i % cols == 0) { //start of new row
 lastRowCons = lastCons;
 cons.setX(initialXSpring);
 } else { //x position depends on previous component
 cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST),
 xPadSpring));
 if (i / cols == 0) { //first row
 cons.setY(initialYSpring);
 } else { //y position depends on previous row
 cons.setY(Spring.sum(lastRowCons.getConstraint(SpringLayout.SOUTH),
 yPadSpring));
 lastCons = cons;
 //Set the parent's size.
 SpringLayout.Constraints pCons = layout.getConstraints(parent);
 pCons.setConstraint(SpringLayout.SOUTH,
 Spring.sum(
 Spring.constant(yPad),
 lastCons.getConstraint(SpringLayout.SOUTH)));
 pCons.setConstraint(SpringLayout.EAST,
 Spring.sum(
 Spring.constant(xPad),
 lastCons.getConstraint(SpringLayout.EAST)));
 /* Used by makeCompactGrid. */
 private static SpringLayout.Constraints getConstraintsForCell(
 int row, int col,
 Container parent,
 int cols) {
 SpringLayout layout = (SpringLayout) parent.getLayout();
 Component c = parent.getComponent(row * cols + col);
 return layout.getConstraints(c);
 * Aligns the first <code>rows</code> * <code>cols</code>
 * components of <code>parent</code> in
 * a grid. Each component in a column is as wide as the maximum
 * preferred width of the components in that column;
 * height is similarly determined for each row.
 * The parent is made just big enough to fit them all.
 * @param rows number of rows
 * @param cols number of columns
 * @param initialX x location to start the grid at
 * @param initialY y location to start the grid at
 * @param xPad x padding between cells
 * @param yPad y padding between cells
 public static void makeCompactGrid(Container parent,
 int rows, int cols,
 int initialX, int initialY,
 int xPad, int yPad) {
 SpringLayout layout;
 try {
 layout = (SpringLayout)parent.getLayout();
 } catch (ClassCastException exc) {
 System.err.println("The first argument to makeCompactGrid must use SpringLayout.");
 return;
 //Align all cells in each column and make them the same width.
 Spring x = Spring.constant(initialX);
 for (int c = 0; c < cols; c++) {
 Spring width = Spring.constant(0);
 for (int r = 0; r < rows; r++) {
 width = Spring.max(width,
 getConstraintsForCell(r, c, parent, cols).
 getWidth());
 for (int r = 0; r < rows; r++) {
 SpringLayout.Constraints constraints =
 getConstraintsForCell(r, c, parent, cols);
 constraints.setX(x);
 constraints.setWidth(width);
 x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad)));
 //Align all cells in each row and make them the same height.
 Spring y = Spring.constant(initialY);
 for (int r = 0; r < rows; r++) {
 Spring height = Spring.constant(0);
 for (int c = 0; c < cols; c++) {
 height = Spring.max(height,
 getConstraintsForCell(r, c, parent, cols).
 getHeight());
 for (int c = 0; c < cols; c++) {
 SpringLayout.Constraints constraints =
 getConstraintsForCell(r, c, parent, cols);
 constraints.setY(y);
 constraints.setHeight(height);
 y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad)));
 //Set the parent's size.
 SpringLayout.Constraints pCons = layout.getConstraints(parent);
 pCons.setConstraint(SpringLayout.SOUTH, y);
 pCons.setConstraint(SpringLayout.EAST, x);
}I know this is a lot but when I have tried to put out the portion where I belived the problem to be, didnt work, people couldent help, so here it is all of it.

it wouldn't run for me, until I changed these lines
contentPane.add( title1 );
contentPane.add( title2 );
contentPane.add( title3 );
contentPane.add( title4 );
SpringLayout layout = new SpringLayout();
contentPane.setLayout(layout);
to these
contentPane.getContentPane().add( title1 );
contentPane.getContentPane().add( title2 );
contentPane.getContentPane().add( title3 );
contentPane.getContentPane().add( title4 );
SpringLayout layout = new SpringLayout();
contentPane.getContentPane().setLayout(layout);
then it worked OK, smaller frame on top (the one with the info), larger frame behind.
both above all other windows
made it into a .jar file (in case IDE influenced above) and ran the same way

Newbie need help in compiling sample code

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