tableModel « JTable « Java Swing Q&A





1. Relationship between JTable, TableModel & TableData    stackoverflow.com

Whats the relationship between a JTable, TableModel and TableData. If i just modify the TableData, does that also change the data display on the JTable component or ...

2. JTable TableModel problem in Java    stackoverflow.com

I can show my data in a JTable without a problem, but when I want to filter while my app is running, the JTable is not showing me data changes. I ...

3. Efficient TableModel implementation    stackoverflow.com

My TableModel implementations typically sit on an ArrayList to allow for efficient random access performance. However, ArrayList's remove(int) implementation looks fairly inefficient as it involves making a System.arrayCopy(...) call to ...

4. JTable + TableModel cache fetch event for lazy instantiation?    stackoverflow.com

Scenario: you are using a JTable with a custom TableModel to view the contents of some collection located in a database or on the network or whatever. The brute force way to ...

5. TableModel column differentiating between number types    stackoverflow.com

I have a JTable used to store numbers. I really only use the table for viewing/sorting. Is there a downfall (other than maybe needed to allocate more space) to giving the ...

6. Display Table Titles with a Table Model in Java Swing    stackoverflow.com

I would like to create a table with the constructor method JTable(TableModel). What exact methods in the TableModel do I need to display the titles of each column?

7. Initializing JCheckBoxes when they are generated by a Table Model    stackoverflow.com

In Java Swing I have created a JTable which uses a table model class which extends DefaultTableModel. As the values of one row of the table are of boolean type, these ...

8. JDBC TableModel for a JTable in Java?    stackoverflow.com

I want to display a database table as a JTable. I have never used JTable before so I googled JTable and TableModel. With that googling, I am able to write my own ...

9. Java: JTable reordering rows and refresh    stackoverflow.com

I have a JTable (extended) and an implementation of TableModel, in which I have the methods ...

  • moveEntryUp(int rowIdx)
  • moveEntryDown(int rowIdx)
... within the table model implementation. I have verified that these work properly. ...





10. Java Swing: Recalculating values in a JTable, to use the TableModel or write a custom editor?    stackoverflow.com

I use a JTable to display data sourced from a streaming data feed. Each data point is represented as an object of type X, which has one field of interest, ...

11. JTable filled with database data is not being updated when columns are reordered    stackoverflow.com

I have a JTable filled with data of a table of my database (so I used ResultSetTableModel) and using TableRowSorter to sort the rows, as I click in one column of ...

12. .net equivalent for Java's Swing TableModel?    stackoverflow.com

I'm a Java developer wich is just starting to learn .net. When coding my user interfaces with Java we can count with the TableModel interface wich makes the process of representing ...

13. Table model in empty table    stackoverflow.com

I am creating a Java Swing application which displays a window with a table where the user can insert or delete selected elements stored in an array. For this table I ...

14. JTable's and DefaultTableModel's row indexes lose their synchronization after I sort JTable    stackoverflow.com

JAVA NETBEANS // resultsTable, myModel JTable resultsTable; DefaultTableModel myModel; //javax.swing.table.DefaultTableModel myModel = (DefaultTableModel) resultsTable.getModel(); // event of clicking on item of table String value = (String) myModel.getValueAt(resultsTable.getSelectedRow(), columnIndex) I use JTable and DefaultTableModel to view a table of various ...

15. Java JTable export to PDF    stackoverflow.com

Currently, I am using iText to convert my jTable data to pdf.

private void print() {
    Document document = new Document();
    try {
    ...

16. JTable How to refresh table model after insert delete or update the data    stackoverflow.com

This is my jTable

private JTable getJTable() {
    String[] colName = { "Name", "Email", "Contact No. 1", "Contact No. 2",
         ...





17. Swapping values around in the view with information taken from a DAO    stackoverflow.com

To respect requirements, I've temporarily used a hack to swap around a numerical id with a String representing a corresponding username in the view. To do this I've called a DAO directly ...

18. TableModel vs ColumnModel: who owns the column value?    stackoverflow.com

What's the difference between JTable.getModel().getColumnName() and JTable.getColumnModel().getColumn(index).getHeaderValue()? The two don't seem to share any data. My guess is that TableModel.getColumnName() indicates the textual representation of a column while TableColumn.getHeaderValue() and TableColumn.getHeaderRenderer() ...

19. JTable, TableModel and TableColumnModel - Weird thing going on    stackoverflow.com

I am developing a costum JTable for a client of mine. I had just finished the column model when I started on the table model. Most of the functions that are related ...

20. How do I get an updated post-sort TableModel?    stackoverflow.com

I have a JTable using setAutoCreateRowSorter(true) and a RowSorterListener attached, per below, because I need to perform some operations elsewhere in my application upon a sort of the JTable. I find ...

21. JTable with checkbox issue-Table is not created at runtime    stackoverflow.com

can anyone please help me. I am trying to create a dynamic table with checkboxes. Data are accessed from database. But it is not creating the table at runtime. It retrieves ...

22. removeRow() method in custom TableModel Swing    stackoverflow.com

I have a JTable that is populated using a custom TableModel I created. I have another JTable that rows can be added to from the first JTable. I can add the ...

23. How come JTables aren't showing additions to them?    stackoverflow.com

I am adding objects from one JTable to another, and I can see through debugging that in the CustomTableModel the objects are being added to the list of objects. Only the ...

24. getDataVector gives various data types from TJable    stackoverflow.com

I have a JTable and when I use jTable1.getModel()).getDataVector() objects from different columns have different types (they should be all Strings for my case) My table has five columns:

  1. number (it's String actually, ...

25. How to refresh JTable with vectors    stackoverflow.com

I have been stumped with this for quite some time now. I understand you use the table model to refresh the actual table with the new values however I cannot seem ...

26. Visualizing a Set with JTable in Java Swing    stackoverflow.com

I would like to visualize a Set of Threads, something like: Set<ThreadInfo>. I choose Set, as every Thread in the JVM is unique. With the choice of displaying it with the ...

27. How to set icon in a column of JTable?    stackoverflow.com

I am able to set the column's header but not able to set icon in all the rows of first column of JTable.

public class iconRenderer extends DefaultTableCellRenderer{
    public ...

28. Why Java DefaultTableModel use Vector?    stackoverflow.com

I know we have to use AWT thread for all table model update operations. Under the single AWT thread, any table model will be thread-safe. Why DefaultTableModel picks thread-safe Vector as ...

29. Creating a new JTable from current JTable view    stackoverflow.com

I am working on a project that involves JTable and performing sorting and filtering operations on it. I am done with the sorting and filtering part and now I want to ...

30. Removing Column from TableModel in Java    stackoverflow.com

In Java I'm using the DefaultTableModel to dynamically add a column to a JTable.

//create DefaultTableModel with columns and no rows
DefaultTableModel tableModel = new DefaultTableModel(columnNames, 0);
JTable table = new JTable(tableModel);
The columnNames variable ...

31. Java: Possible to replace TableModel in an existing JTable?    stackoverflow.com

Is it possible to replace the entire TableModel in an existing JTable or do I have to recreate the JTable?

32. Multiple instances of model components in Java Swing?    stackoverflow.com

Until now I had different model classes for the appropriate Java Swing component, for instance I have several TableModel for several JTable. Every JTable has its own TableModel. The TableModel is ...

33. Getting JTable from its TableModel    stackoverflow.com

I have a function which triggers with:

public void tableChanged(TableModelEvent e){...}
I got the TableModel from the TableModelEvent with:
TableModel model = (TableModel)e.getSource();
But I need the JTable to use it in a TablecellBalloonTip cosntructor. ...

34. Java+ResultSetTableModel, Jtable not refreshing , working fine for the first time but does not work the next time    stackoverflow.com

Hi I am stuck in a problem. i am actually populating a jtable dynamically using the ResultTableModel. The table gets populated correctly for the first time but next time when i try ...

35. Java set data to JTable from database    stackoverflow.com

i try to insert data from database to Jtable there is my code:

private Vector <Vector<String>> data;
private Vector<String> header;
table.setModel(new javax.swing.table.DefaultTableModel(
data,header     
));

GtFromDb db=new GtFromDb();
data=db.getClient();

header=new Vector<String>();
header.add("Imones pavadinimas");
header.add("vardas");
header.add("pavarde");
header.add("salis");
header.add("Adresas");
header.add("telefonas");

public Vector getClient() 
{
 ...

36. inserting data to table from database    stackoverflow.com

there's my code, it doesn't work because shows emty table without any rows ir columns can someone tel where is problem

public class test extends JFrame {

    private final JButton ...

37. JTable Refresh using TableModel    stackoverflow.com

I have been trying to refresh my Jtable but I think I'm somehow getting confused with the tableModel and Table Model listener concepts. So I construct a table by passing a datastructure ...

38. Updating number of columns in TableModel    stackoverflow.com

i use a DataModel which extends an AbstractTableModel for my Jtable. When i use the constructor JTable main = new JTable(model); everything works fine but when i add columns to my DataModel and ...

39. how to transferring information from one Jtable to another?    stackoverflow.com

I am trying to make a UI with two tables. One of the tables is a 2D table with names and tickboxes. The other is a 1D tables that is (supposed ...

40. Java: Observer pattern and garbage collector    stackoverflow.com

i have implemented a TableModel whose registers launch PropertyChangeEvents. My TableModel listen those events to fire TableModelEvents in order to refresh the underliying JTable. If the TableModel is cleared or refreshed with ...

41. Java TableModelListener and Live Feed Listener?    stackoverflow.com

I am relatively new to Java and I am trying to write a simple program that displays a read-only JFrame, containing a JTable and displaying live stock prices that are in ...

42. Auto-change TableModel based on Table view?    stackoverflow.com

So I am working on a GUI that involves working with tables that can be sorted. I am noticing that when I sort a table, and I select a row from ...

43. JTable vs. custom TableModel    stackoverflow.com

I am trying to implement a JTable on a Java GUI that can fill itself with values from a file and allow the user to make modifications to various cells. ...

44. Help on TableModel    coderanch.com

45. Custom tablemodel - works in 1.2.2 not in 1.3    coderanch.com

Hi, I have a custom tablemodel, which has it data as a vector of Vectors of my custom datatypes. The custom datatypes are there to keep the old and new values of the table. This was developed in jdk1.2.2 and works fine there. However when I tried a sample application in jdk1.3 (as a prelude to migrating the entire application to ...

46. TableModel-unable to locate error    coderanch.com

Hi, I am using TableModel to connect to a database and display the results. I am unable to display the table. It doesn't display anything. Below is the code from the TableModel I am using to connect to database. Could anyone help me find the errors please. any help would be ggreatly appreciated. Thanks import java.io.BufferedReader; import java.io.FileReader; import java.io.*; import ...

47. For those who've used JClass Chart, how do I load data using a TableModel for x axis    coderanch.com

Hi Meghna, As I understand it, the JCChart automatically generates the X axis values. If you want something else then you need to have the chart use PointLabels. Look at the following example at how I made the JCChart use PointLabels. import java.awt.GridLayout; import java.awt.Dimension; import javax.swing.JPanel; import javax.swing.JLabel; import javax.swing.table.AbstractTableModel; import javax.swing.JTable; import com.klg.jclass.chart.JCChart; import com.klg.jclass.chart.ChartDataView; import com.klg.jclass.chart.data.JCChartSwingDataSource; import com.klg.jclass.chart.JCAxis; ...

49. problems w/ JCheckBox's and TableModel    coderanch.com

Hi Steve, I usually use the action command to figure out which is set. You can do something like the code below. import java.awt.*; import java.awt.event.*; import javax.swing.*; public class RadioTest extends JFrame { JRadioButton b1, b2, b3, b4; ButtonGroup bg; public RadioTest() { super( "RadioBox Test" ); bg = new ButtonGroup(); b1 = new JRadioButton( "One", true ); b2 = ...

50. Updating a TableModel    coderanch.com

Hi all i am describing my problem as follows : 1)i am making a table model which is consist of vector.now my problem is data in table model gets Update,Insert or Delete, when any messages comes from the server how can i do that... Is there any exampels available on net ? 2)my table is on JPanel do i have to ...

51. TableModel problem    coderanch.com

Hi guys and girls, I'm trying to implement a table model but keep getting a runtime error. The stack trace i get is : Exception occurred during event dispatching: java.lang.AbstractMethodError at archivetool.ResultSetTableModel.(ResultSetTableModel.java:40) at archivetool.resultsTable2.init(resultsTable2.java:78) at archivetool.resultsTable2.(resultsTable2.java:56) at archivetool.db_queryTool.goDB(db_queryTool.java:614) at archivetool.db_queryTool$6.actionPerformed(db_queryTool.java:386) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216) at java.awt.Component.processMouseEvent(Component.java:3715) at java.awt.Component.processEvent(Component.java:3544) at java.awt.Container.processEvent(Container.java:1164) at java.awt.Component.dispatchEventImpl(Component.java:2593) at java.awt.Container.dispatchEventImpl(Container.java:1213) at ...

52. TableModel question    coderanch.com

I have a DynamicTableModel that I use for my JTable. In JTable I have two columns, one contains integers and other doubles. If I enter integer values for integer column everything is fine. But if I enter double values like 2.2 or 3.1 into double column, the edited cell gets highlighted in red and I can't edit any other cell until ...

53. TableModel Problems    coderanch.com

I have a JTable with a an AbstractTableModel that I have created using Data from 2 Vectors. Below is my code for each Getting Data from Database: try { stmt = connection.createStatement(); rs = stmt.executeQuery(queryString); Vector rows = new Vector(); while(rs.next()) { Vector newRow = new Vector(); for (int i = 1; i <= 7; i++) { newRow.addElement(rs.getObject("tbldatainput.ID")); newRow.addElement(rs.getObject("DateTime")); newRow.addElement(rs.getObject("Name")); newRow.addElement(rs.getObject("lastName")); ...

55. JTable and TableModel    coderanch.com

56. TableModels value getting changed    coderanch.com

57. TableModel and adding rows    coderanch.com

59. Delete column from TableModel    coderanch.com

60. TableModel abstraction?    coderanch.com

Thank you Jeffery. What I ended up doing after confering with some co-workers was to make an abstract class called NetTableModel that extends AbstractTableModel and abstracts all the methods that MeshDataTableModel and DefaultNetTableModel will share. and then made each of the subclasses extend NetTableModel and implement each of the abstract methods that the two share: catchTable = new JTable(); catchTable.setAutoCreateColumnsFromModel(false); NetTableModel ...

61. Need help with TableModel code I've got...    coderanch.com

Allocate a new Object array for each tuple. Replace this: ... Object[] row = new Object[2]; while(this.rs.next()){ row[0] = rs.getString(9); row[1] = rs.getString(12); cache.add(row); } ... with this: ... while(this.rs.next()){ Object[] row = new Object[2]; row[0] = rs.getString(9); row[1] = rs.getString(12); cache.add(row); } ... You'll figure out by yourself what was wrong.

62. TableModel of a JTable    coderanch.com

Hi, I have a doubt about the tablemodel. I've always seen (in examples on the web) that the table models are contructed by an object Object[][].. In need to make a table from a various lists.I have to convert the lists to Object[][] ??? or there is a way to directly put the lists in the model?? thanks

63. How do I call this JTable TableModel method?    coderanch.com

public TableDemo() { super(new GridLayout(1,0)); JTable table = new JTable(new MyTableModel()); table.setPreferredScrollableViewportSize(new Dimension(500, 70)); //Create the scroll pane and add the table to it. JScrollPane scrollPane = new JScrollPane(table); //Add the scroll pane to this panel. add(scrollPane); } class MyTableModel extends AbstractTableModel { private String[] columnNames = {"Duration", "Day", "Month", "Years", "Location", "Reserved" }; private ArrayList cruiseListing = new ArrayList (5); ...

64. Calling a method added to tablemodel    coderanch.com

I want to add my own method to a tablemodel in addition to the ones that I'm required to include. The method will be used to generate tooltips. I've used an example from the Tutorial as a template. In the example below, I can generate a tooltip by invoking the getValueAt() method which is defined in the table model, but if ...

65. JTables and TableModels.    coderanch.com

66. TableModel issue in JTable    coderanch.com

67. Issue with JTables and saving on screen content to underlying TableModel    coderanch.com

The next button works like the tab key now. import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.table.*; public class EditSave { JTable table; private JTable getTable() { String[] colIds = { "column 1", "column 2", "column 3", "column 4" }; int rows = 8, cols = 4; Object[][] data = new Object[rows][cols]; for(int row = 0; row < rows; row++) for(int ...

69. TableModel / JTable question    coderanch.com

70. TableModel    coderanch.com

Hi Xin, You posted the implementation of getRowCount method but the exception is in the implementation of the getColumnCount method. Try to debug, put a breakpoint in that method and you will figure out which object is null. You are trying to do a method call on a null object in getColumnCount implementation. Hope this helps, Romeo

71. JTable data not refreshing on UI when changing TableModel    coderanch.com

private void repaintEventTable(final JButton button) { //first remove the scrollPane component Container parentContainer = getParent(); System.out.println("Parent Container's Component Count is: "+parentContainer.getComponentCount()); Component[] compArray = parentContainer.getComponents(); for(int i=0;i

72. TableModel - why getColumnClass?    coderanch.com

Originally posted by Rob Prime: I've done this by creating a custom JTable, and overriding the getCellRenderer(int row, int col) and getCellEditor(int row, int col) methods... However, this made me think: why does TableModel have a method to get the class of an entire column (getColumnClass(int col)),))? If you override getCellRenderer() and getCellEditor() then getColumnClass() is irrelevant. It is only used ...

73. tablemodel getcolumnclass() method produces null pointer exception    coderanch.com

Hi - i'm trying to load results from an oracle database into a JTable with a button in each row. Unfortunately, I'm having some difficulty with the getColumnClass which I understand is supposed to tell the JTable how to render the data contained in the column, which in this instance should be JButtons. The code below compiles ok: /* * SQLTableModel.java ...

74. tablemodel with data from database    coderanch.com

Only you will be able to tell if it is inefficient. If the user is only changing a few pieces of data (so the number of insert/update statements issued to the database are few), then your implementation would likely work. But you are correct to worry that your implementation may not scale. We typically let the user make changes to the ...

75. optimize tablemodel    coderanch.com

hi all, after some changes in my implementation, my code has been now horrible.... i would like to optimize it. could you give me some ideas? Since i know i am using some elements of the view inside this model, i need to separate, thanks public class TheTableModel extends AbstractTableModel { /** * field used for determining when the column correspond ...

76. problem with tablemodel    coderanch.com

Hi all I'm having an issue with my jTable allowing the end user to update indivdual cells in the table, then having those update the database. I think my issue lies in the tablemodel but have yet been able to wrap my head around what it is wrong with it. Below is my table model. thanks for any insite on this ...

77. Synchronized tablemodel issue    coderanch.com

Hi all I have a very large application that processes 3 record sets (call them a,b,c); each contains from 0 to 100,000 record objects (these come from raw data, not a database), and these record sets arrive at various unknown intervals via different threads. When the first record set (a) is complete I process it to extract various fields which are ...

78. Real-time TableModel Update Suggestions    coderanch.com

i have an application with which is distributed to many user sharing 1 common db. my concern is, is there any way to make updating jtables/tablemodels better instead of using threads and such,,,my updating is functioning well, but i want to make my jtable/tablemodel always up-to-date with the data without the user noticing any hangs or performance issues... i'm using abstrattablemodel ...

79. confusion in TableModel(getRowCount method execute before constructor)    coderanch.com

JTable _values=new JTable(new MyTableModel()); // in JPanel class MyTableModel extends DefaultTableModel { private Object[][] data; private String[] header; MyTableModel() { data=new Object[2][50]; header=new String[]{"x-axis","y-axis"}; } public String getColumnName(int i) { return header[i]; } public int getColumnCount() { System.out.println(header);//prints null return header.length; } public int getRowCount() { System.out.println(data);//prints null return data.length; } } my confusion is that getRowCount() method is executed before ...

80. To use or not to use custom tablemodel?    coderanch.com

81. ResultSet to TableModel (using ArrayLists)    coderanch.com

public static TableModel resultSetToTableModel(ResultSet rs) { try { ResultSetMetaData metaData = rs.getMetaData(); int numberOfColumns = metaData.getColumnCount(); ArrayList columnNames = new ArrayList(); // Get the column names for (int column = 0; column < numberOfColumns; column++) { columnNames.add(metaData.getColumnLabel(column + 1)); } // Get the rows ArrayList rows = new ArrayList(); while (rs.next()) { ArrayList newRow = new ArrayList(); for (int i = ...

82. Swing problem: JTable/TableModel    java-forums.org

hello I've got a class that implements TableModel and when loading an object of that class to a JTable I was hoping that I would see the Column Names of that table: the following code appears in the class the implements TableMode: private static String[] ColumnName = {"Number", "FileName", "LineNumber", "Error"}; @Override public String getColumnName(int columnIndex) { return CompilationErrors.ColumnName[columnIndex]; } I've ...

83. Set focus on particular cell in a JTable when using TableModel    java-forums.org

I want to implement validation in my table cells. I the value does not satisfy certain condition then the focus should remain on the same cell and the user should be asked to enter valid value. I am using TableModel and i have tried implementing validation in the setValueAt() method some thing like this. //************************** setValueAt method of my table model. ...

84. Map in TableModel    java-forums.org

TableModel is an interface, which means you can fill in the methods however you want. There are *no* limitations as to how you you store the data; you choose how to provide the data to each cell in the table. DefaultTableModel is a simple implementation of TableModel that is fairly easy to use. Look at the API for each component and ...

85. TableModel initialize/delete    java-forums.org

Hello, I am trying to create an application for managing a warehouse which contains products stored in a TreeSet. For displaying the products I have created an AbstractTableModel which I fill with the elementes of the tree. The problem occurs when I delete a product form the tree. Say I have n products in the data model, after deletion I have ...

86. Create different instance of a tablemodel    java-forums.org

import javax.swing.*; import javax.swing.table.*; public class Test { public static void main(String[] args) { Test test = new Test(); JTable table = new JTable(test.getModel()); JOptionPane.showMessageDialog(null, new JScrollPane(table), "", JOptionPane.PLAIN_MESSAGE); } private AbstractTableModel getModel() { return new AbstractTableModel() { // You must specify at least these 3 methods. // See comments in AbstractTableModel api. public int getRowCount() { return 10; } public ...

87. Customizing JTable in Netbeans - how to set TableModel    java-forums.org

Customizing JTable in Netbeans - how to set TableModel Thank you in advance for your help! I am designing a GUI in Netbeans IDE 7.0.1 by dragging and dropping controls such as labels, text boxes and a table. The table's data is generated by connecting to a remote database, runs a thread that periodically queries the database, and displays ...

88. My Jtable cant load data from an ArrayLists in a TableModel    forums.oracle.com

However, the JTable keeps loading a blank table. Well, you need to read the JTable API and follow the link to the Swing tutorial on "How to Use Tables", for an example of creating a custom TableModel. 1) First of all you don't start by extending the DefaultTableModel, you would extend the AbstractTableModel. You need to implement the methods like getValueAt() ...

90. jTable TableModel and passing data from custom classes    forums.oracle.com

Hi, I'm trying to use jTable for the first time, and I'm having problems in getting my head around how to pass in data that's in my own custom classes. I have a custom class called Message that I've given various methods such as getDate, getTime, getMsgDirection, getMsgType etc. My data is read in from a file, and each line of ...