Help with JTabbedPane.Please advise

I am unable to display the contents on a JList component
which is in a JPanel.
But if I extend JFrame,the contents are displayed.
I guess this is due to the show() method,
Is there a method similar to show in JPanel??
Can some one advise??

Hi,
Where are you actually adding the JPanel, are u adding the JPanel on the JTabbedPane?
As per your doubt, JPanel consists of JList, actually you will have to add this JPanel on to the JFrame, then when you say JFrame.show() / JFrame.setVisible(true), i think that should work and you will be able to see the JList box.
Regards,
Balaji

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  • Need help with JTabbedPane

    hi please i need some help with JTabbedPane i've commented the line giving me the problem i'm trying to initialize Tabs but there's an error on it
    import java.awt.BorderLayout;
    import java.util.Vector;
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.JTabbedPane;
    import model.ContactModel;
    import view.ContactAddView;
    import controller.ContactController;
    public class PersonalContact extends JFrame
         private ContactModel          contactModel;
         private ContactAddView     contactAddView;
         private ContactController     contactController;
         public PersonalContact()
              super ("Personal Contact Manager Demo");
              setSize(580,300);
              getContentPane().setLayout(new BorderLayout());
              contactModel          = new ContactModel();
              contactModel.generateTestData(10);
              Vector searchTest = contactModel.searchMultipleContacts("Surname7");
              contactModel.printAllFoundContactSet(searchTest);
              contactAddView     = new ContactAddView();
              contactController     =     new ContactController(contactModel, contactAddView);
              //JTabbedPane Tabs = JTabbedPane(JTabbedPane.TOP);
              JTabbedPane Tabs = JTabbedPane();
              Tabs.addTab("Add", contactAddView);
              Tabs.addTab("Update", new JPanel());
              Tabs.addTab("View", new JPanel());
              Tabs.addTab("Search", new JPanel());
              Tabs.addTab("Delete", new JPanel());
              getContentPane().add(Tabs);
              getContentPane().add(contactController, BorderLayout.SOUTH);
              setResizable(false);
              show();
         public static void main (String [] argv)
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    }

    You're missing the new keyword in a couple of places.

  • Help with message please:  Warning: mysql_free_result() expects parameter 1 to be resource, null given in...... line

    I would really appreciate some help with my search & results page that is now throwing up the following error:
    Warning: mysql_free_result() expects parameter 1 to be resource, null given in...... line (the line number refers to the following code:
    mysql_free_result($RSsearchforsale);
    mysql_free_result($RsSearchForSale2);
    mysql_free_result($RsSearchForSale3);
    mysql_free_result($RsSearchForSale4);
    I am new to php and am setting up a dynamic site in Dreamweaver (thanks to the Missing Manual – very helpful). I apologise in advanced for my lengthy description of the problem (perhaps get yourself a drink before continuing!)
    I have a Search page with 4 list menus where the user can select an option from ANY or ALL of the menus, if a menu is not selected the value posted to the results page will be 'zzz'.
    On the results page I have 4 recordsets, all getting the correct results, only one recordset is required to run depending on how many of the menus from the search page have been selected and a test is run before executing the sql using a SWITCH statement checking how many of the menus had passed the 'zzz' values from the Search page if you see what I mean. The results page  has Repeating Regions, Recordset Paging and Display Record Count. The exact result that I require are generated by this method.
    THE PROBLEM, when a user makes a selection the first page of 10 results is fine, but the error message above is shown at the bottom of the page, AND when the user clicks NEXT to go to the next page of results THERE ARE NO RESULTS.
    This is exactly what happens depending on how many menus selected and which recordset is used:
    4 menus selected from Search: runs RSsearchforsale, results correct but 3 error messages on 1st page relating to mysql_free_result($RsSearchForSale2),mysql_free_result($RsSearchForSale3), & mysql_free_result($RsSearchForSale4). The display record count shows correct results found. NEXT page is empty of results and still shows the correct display record count as if it should be displaying the records, also has the same 3 error messages.
    3 menus selected from Search:  runs RsSearchForSale2, results correct but 3 error messages on 1st page relating to mysql_free_result($RSsearchforsale),mysql_free_result($RsSearchForSale3), & mysql_free_result($RsSearchForSale4). The display record count shows correct number of results. NEXT page shows results from the  DEFAULT setting of the recordset and the Display record count reflects this new set of results. Also still shows the 3 mysql_free_results for RsSearchForSale2, 3 and 4.
    2 menus selected from Search: runs   RsSearchForSale3, results correct but 2 error messages on 1st page relating to  mysql_free_result($RSsearchforsale) & mysql_free_result (RsSearchForSale4). The display record count is correct. NEXT page does exactly the same as described in above 3 menus selected.
    1 menu selected from search: runs RsSearchForSale4, results correct but 1 error meaasge on 1st page, mysql_free_result($RSsearchforsale). Display record count is correct and again when NEXT page is selected does as described in above where 2 or 3 menus selected.
    If you have gotten this far without falling asleep then thank you and well done! I have pasted my code below and I know its a lot to ask but please please can you give me an idea as to where or why I have gone wrong. I felt I was so close at perfecting this search and have been working on it for weeks now. I feel sure the problem is because I have 4 recordsets on the page but I could find no other way to get the exact results I wanted from the menus.
    Looking forward to any help.
    <?php require_once('Connections/propertypages.php'); ?>
    <?php if (!function_exists("GetSQLValueString")) {
    function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
      $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
      switch ($theType) {
        case "text":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;   
        case "long":
        case "int":
          $theValue = ($theValue != "") ? intval($theValue) : "NULL";
          break;
        case "double":
          $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
          break;
        case "date":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;
        case "defined":
          $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
          break;
      return $theValue;
    $currentPage = $_SERVER["PHP_SELF"];
    $maxRows_RSsearchforsale = 10;
    $pageNum_RSsearchforsale = 0;
    if (isset($_GET['pageNum_RSsearchforsale'])) {
      $pageNum_RSsearchforsale = $_GET['pageNum_RSsearchforsale'];
    $startRow_RSsearchforsale = $pageNum_RSsearchforsale * $maxRows_RSsearchforsale;
    $varloc_RSsearchforsale = "mpl";
    if (isset($_POST['location'])) {
      $varloc_RSsearchforsale = $_POST['location'];
    $vartype_RSsearchforsale = "vil";
    if (isset($_POST['type'])) {
      $vartype_RSsearchforsale = $_POST['type'];
    $varprice_RSsearchforsale = "pr9";
    if (isset($_POST['price'])) {
      $varprice_RSsearchforsale = $_POST['price'];
    $varbed_RSsearchforsale = "b5";
    if (isset($_POST['beds'])) {
      $varbed_RSsearchforsale = $_POST['beds'];
    switch (true) {
    case ($varloc_RSsearchforsale != 'zzz' && $vartype_RSsearchforsale != 'zzz' && $varprice_RSsearchforsale != 'zzz' && $varbed_RSsearchforsale != 'zzz'):
    mysql_select_db($database_propertypages, $propertypages);
    $query_RSsearchforsale = sprintf("SELECT DISTINCT trueprice,`desc`, `propid`, `bathrooms`, `photo1`, locationtable.loc, typetable.style, bedtable.`number` FROM detailstable JOIN locationtable ON detailstable.location=locationtable.locid JOIN typetable ON detailstable.type=typetable.typeid JOIN pricetable ON detailstable.price=pricetable.priceid JOIN bedtable ON detailstable.beds=bedtable.bedid WHERE location=%s AND price=%s AND type=%s AND beds=%s ORDER BY detailstable.trueprice ASC", GetSQLValueString($varloc_RSsearchforsale, "text"),GetSQLValueString($varprice_RSsearchforsale, "text"),GetSQLValueString($vartype_RSsearchforsale, "text"),GetSQLValueString($varbed_RSsearchforsale, "text"));
    $query_limit_RSsearchforsale = sprintf("%s LIMIT %d, %d", $query_RSsearchforsale, $startRow_RSsearchforsale, $maxRows_RSsearchforsale);
    $RSsearchforsale = mysql_query($query_limit_RSsearchforsale, $propertypages) or die(mysql_error());
    $row_RSsearchforsale = mysql_fetch_assoc($RSsearchforsale);
    if (isset($_GET['totalRows_RSsearchforsale'])) {
      $totalRows_RSsearchforsale = $_GET['totalRows_RSsearchforsale'];
    } else {
      $all_RSsearchforsale = mysql_query($query_RSsearchforsale);
      $totalRows_RSsearchforsale = mysql_num_rows($all_RSsearchforsale);
    $totalPages_RSsearchforsale = ceil($totalRows_RSsearchforsale/$maxRows_RSsearchforsale)-1;
    $queryString_RSsearchforsale = "";
    if (!empty($_SERVER['QUERY_STRING'])) {
      $params = explode("&", $_SERVER['QUERY_STRING']);
      $newParams = array();
      foreach ($params as $param) {
        if (stristr($param, "pageNum_RSsearchforsale") == false &&
            stristr($param, "totalRows_RSsearchforsale") == false) {
          array_push($newParams, $param);
      if (count($newParams) != 0) {
        $queryString_RSsearchforsale = "&" . htmlentities(implode("&", $newParams));
    $queryString_RSsearchforsale = sprintf("&totalRows_RSsearchforsale=%d%s", $totalRows_RSsearchforsale, $queryString_RSsearchforsale); } ?>
    <?php require_once('Connections/propertypages.php'); ?>
    <?php if (!function_exists("GetSQLValueString")) {
    function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
      $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
      switch ($theType) {
        case "text":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;   
        case "long":
        case "int":
          $theValue = ($theValue != "") ? intval($theValue) : "NULL";
          break;
        case "double":
          $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
          break;
        case "date":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;
        case "defined":
          $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
          break;
      return $theValue;
    $currentPage = $_SERVER["PHP_SELF"];
    $maxRows_RsSearchForSale2 = 10;
    $pageNum_RsSearchForSale2 = 0;
    if (isset($_GET['pageNum_RsSearchForSale2'])) {
      $pageNum_RsSearchForSale2 = $_GET['pageNum_RsSearchForSale2'];
    $startRow_RsSearchForSale2 = $pageNum_RsSearchForSale2 * $maxRows_RsSearchForSale2;
    $varloc2_RsSearchForSale2 = "mpl";
    if (isset($_POST['location'])) {
      $varloc2_RsSearchForSale2 = $_POST['location'];
    $varprice2_RsSearchForSale2 = "p9";
    if (isset($_POST['price'])) {
      $varprice2_RsSearchForSale2 = $_POST['price'];
    $vartype2_RsSearchForSale2 = "vil";
    if (isset($_POST['type'])) {
      $vartype2_RsSearchForSale2 = $_POST['type'];
    $varbed2_RsSearchForSale2 = "b5";
    if (isset($_POST['beds'])) {
      $varbed2_RsSearchForSale2 = $_POST['beds'];
    switch (true) {
    case ($varloc2_RsSearchForSale2 == 'zzz'):
    case ($varprice2_RsSearchForSale2 == 'zzz'):
    case ($vartype2_RsSearchForSale2 == 'zzz'):
    case ($varbed2_RsSearchForSale2 == 'zzz'):
    mysql_select_db($database_propertypages, $propertypages);
    $query_RsSearchForSale2 = sprintf("SELECT DISTINCT trueprice,`desc`, `propid`, `bathrooms`, `photo1`, locationtable.loc, typetable.style, bedtable.`number` FROM detailstable JOIN locationtable ON detailstable.location=locationtable.locid JOIN typetable ON detailstable.type=typetable.typeid JOIN pricetable ON detailstable.price=pricetable.priceid JOIN bedtable ON detailstable.beds=bedtable.bedid WHERE (location=%s AND price=%s AND type=%s) OR (location=%s AND price=%s AND beds=%s) OR (location=%s AND type=%s AND beds=%s) OR (price=%s AND type=%s AND beds=%s) ORDER BY detailstable.trueprice ASC", GetSQLValueString($varloc2_RsSearchForSale2, "text"),GetSQLValueString($varprice2_RsSearchForSale2, "text"),GetSQLValueString($vartype2_RsSearchForSale2, "text"),GetSQLValueString($varloc2_RsSearchForSale2, "text"),GetSQLValueString($varprice2_RsSearchForSale2, "text"),GetSQLValueString($varbed2_RsSearchForSale2, "text"),GetSQLValueString($varloc2_RsSearchForSale2, "text"),GetSQLValueString($vartype2_RsSearchForSale2, "text"),GetSQLValueString($varbed2_RsSearchForSale2, "text"),GetSQLValueString($varprice2_RsSearchForSale2, "text"),GetSQLValueString($vartype2_RsSearchForSale2, "text"),GetSQLValueString($varbed2_RsSearchForSale2, "text"));
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    $RsSearchForSale2 = mysql_query($query_limit_RsSearchForSale2, $propertypages) or die(mysql_error());
    $row_RsSearchForSale2 = mysql_fetch_assoc($RsSearchForSale2);
    if (isset($_GET['totalRows_RsSearchForSale2'])) {
      $totalRows_RsSearchForSale2 = $_GET['totalRows_RsSearchForSale2'];
    } else {
      $all_RsSearchForSale2 = mysql_query($query_RsSearchForSale2);
      $totalRows_RsSearchForSale2 = mysql_num_rows($all_RsSearchForSale2);
    $totalPages_RsSearchForSale2 = ceil($totalRows_RsSearchForSale2/$maxRows_RsSearchForSale2)-1;
    $queryString_RsSearchForSale2 = "";
    if (!empty($_SERVER['QUERY_STRING'])) {
      $params = explode("&", $_SERVER['QUERY_STRING']);
      $newParams = array();
      foreach ($params as $param) {
        if (stristr($param, "pageNum_RsSearchForSale2") == false &&
            stristr($param, "totalRows_RsSearchForSale2") == false) {
          array_push($newParams, $param);
      if (count($newParams) != 0) {
        $queryString_RsSearchForSale2 = "&" . htmlentities(implode("&", $newParams));
    $queryString_RsSearchForSale2 = sprintf("&totalRows_RsSearchForSale2=%d%s", $totalRows_RsSearchForSale2, $queryString_RsSearchForSale2);
    }?>
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    <?php if (!function_exists("GetSQLValueString")) {
    function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
      $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
      switch ($theType) {
        case "text":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;   
        case "long":
        case "int":
          $theValue = ($theValue != "") ? intval($theValue) : "NULL";
          break;
        case "double":
          $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
          break;
        case "date":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;
        case "defined":
          $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
          break;
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    $pageNum_RsSearchForSale3 = 0;
    if (isset($_GET['pageNum_RsSearchForSale3'])) {
      $pageNum_RsSearchForSale3 = $_GET['pageNum_RsSearchForSale3'];
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    $varloc3_RsSearchForSale3 = "mpl";
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      $varloc3_RsSearchForSale3 = $_POST['location'];
    $varprice3_RsSearchForSale3 = "p9";
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      $varprice3_RsSearchForSale3 = $_POST['price'];
    $vartype3_RsSearchForSale3 = "vil";
    if (isset($_POST['type'])) {
      $vartype3_RsSearchForSale3 = $_POST['type'];
    $varbed3_RsSearchForSale3 = "b5";
    if (isset($_POST['beds'])) {
      $varbed3_RsSearchForSale3 = $_POST['beds'];
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    case ($varloc3_RsSearchForSale3 == 'zzz' && $varprice3_RsSearchForSale3 == 'zzz'):
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    $RsSearchForSale3 = mysql_query($query_limit_RsSearchForSale3, $propertypages) or die(mysql_error());
    $row_RsSearchForSale3 = mysql_fetch_assoc($RsSearchForSale3);
    if (isset($_GET['totalRows_RsSearchForSale3'])) {
      $totalRows_RsSearchForSale3 = $_GET['totalRows_RsSearchForSale3'];
    } else {
      $all_RsSearchForSale3 = mysql_query($query_RsSearchForSale3);
      $totalRows_RsSearchForSale3 = mysql_num_rows($all_RsSearchForSale3);
    $totalPages_RsSearchForSale3 = ceil($totalRows_RsSearchForSale3/$maxRows_RsSearchForSale3)-1;
    $queryString_RsSearchForSale3 = "";
    if (!empty($_SERVER['QUERY_STRING'])) {
      $params = explode("&", $_SERVER['QUERY_STRING']);
      $newParams = array();
      foreach ($params as $param) {
        if (stristr($param, "pageNum_RsSearchForSale3") == false &&
            stristr($param, "totalRows_RsSearchForSale3") == false) {
          array_push($newParams, $param);
      if (count($newParams) != 0) {
        $queryString_RsSearchForSale3 = "&" . htmlentities(implode("&", $newParams));
    $queryString_RsSearchForSale3 = sprintf("&totalRows_RsSearchForSale3=%d%s", $totalRows_RsSearchForSale3, $queryString_RsSearchForSale3);
    } ?>
    <?php require_once('Connections/propertypages.php'); ?>
    <?php if (!function_exists("GetSQLValueString")) {
    function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
      $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
      switch ($theType) {
        case "text":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;   
        case "long":
        case "int":
          $theValue = ($theValue != "") ? intval($theValue) : "NULL";
          break;
        case "double":
          $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
          break;
        case "date":
          $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
          break;
        case "defined":
          $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
          break;
      return $theValue;
    $currentPage = $_SERVER["PHP_SELF"];
    $maxRows_RsSearchForSale4 = 10;
    $pageNum_RsSearchForSale4 = 0;
    if (isset($_GET['pageNum_RsSearchForSale4'])) {
      $pageNum_RsSearchForSale4 = $_GET['pageNum_RsSearchForSale4'];
    $startRow_RsSearchForSale4 = $pageNum_RsSearchForSale4 * $maxRows_RsSearchForSale4;
    $varloc4_RsSearchForSale4 = "mpl";
    if (isset($_POST['location'])) {
      $varloc4_RsSearchForSale4 = $_POST['location'];
    $vartype4_RsSearchForSale4 = "vil";
    if (isset($_POST['type'])) {
      $vartype4_RsSearchForSale4 = $_POST['type'];
    $varprice4_RsSearchForSale4 = "p9";
    if (isset($_POST['price'])) {
      $varprice4_RsSearchForSale4 = $_POST['price'];
    $varbed4_RsSearchForSale4 = "b5";
    if (isset($_POST['beds'])) {
      $varbed4_RsSearchForSale4 = $_POST['beds'];
    switch (true) {
    case ($varloc4_RsSearchForSale4 == 'zzz' && $vartype4_RsSearchForSale4 =='zzz' && $varprice4_RsSearchForSale4 == 'zzz'):
    case ($varloc4_RsSearchForSale4 == 'zzz' && $varprice4_RsSearchForSale4 =='zzz' && $varbed4_RsSearchForSale4 == 'zzz'):
    case ($varloc4_RsSearchForSale4 == 'zzz' && $varbed4_RsSearchForSale4 =='zzz' && $vartype4_RsSearchForSale4 == 'zzz'):
    case ($varbed4_RsSearchForSale4 == 'zzz' && $vartype4_RsSearchForSale4 =='zzz' && $varprice4_RsSearchForSale4 == 'zzz'):
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    $query_limit_RsSearchForSale4 = sprintf("%s LIMIT %d, %d", $query_RsSearchForSale4, $startRow_RsSearchForSale4, $maxRows_RsSearchForSale4);
    $RsSearchForSale4 = mysql_query($query_limit_RsSearchForSale4, $propertypages) or die(mysql_error());
    $row_RsSearchForSale4 = mysql_fetch_assoc($RsSearchForSale4);
    if (isset($_GET['totalRows_RsSearchForSale4'])) {
      $totalRows_RsSearchForSale4 = $_GET['totalRows_RsSearchForSale4'];
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    Date: Wed, 11 Nov 2009 06:56:24 -0700
    From: [email protected]
    To: [email protected]
    Subject: Help with message please:  Warning: mysql_free_result() expects parameter 1 to be resource, null given in...... line
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    |          |<---------|          |--------->|          |
    |          |1   C    1|          |1   D    1|          |
    |----------|          |----------|          |----------|If I use Indirection on all the relations (A,B,C, and D), then I can load all of the Parent objects with one query, when I access relation A another query is triggered to populate the collection of PCJoin objects, and then as I iterate through those and access relation D, another query is issued for each child. This situation is 2+N (or 'big oh' N), which is what I wanted to avoid.
    So now I have A and B marked as Indirect and checked 'Use Batch Reading' on all four relations. What appears to be happening now is one query for the Parent, then when I access relation A, I get one query for the PCJoin objects, and an additional query each for the Parent and Child objects related to those, for a total of 4 queries (or 'big oh' 1). Much better.
    It seems ideally one could get away with two queries, but I would like to be able to have this behavior whichever end of the join I start at, so I just want to verify that I've done the best I can (and also to provide an example, in case anyone else had the same question.)

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