JTable 2 « JTable « Java Swing Q&A





1. JTable    coderanch.com

2. JTable    coderanch.com

I've been trying to get a JTable to appear. Unfortunately only a blank screen appears. I have 6 records in my test database. When I checked my dataModel with getRowCount and getColumnCount, it does show my 6 records and my 6 columns. What am I missing? Enclosed is a copy of my code. import java.awt.event.*; import javax.swing.*; import java.util.*; import java.sql.*; ...

3. JTable    coderanch.com

4. JTable - URGENT !!!!    coderanch.com

5. JTable:Immediate solution required    coderanch.com

6. JSplitPane, JTable    coderanch.com

7. JTable    coderanch.com

I have a JTable. When a row is clicked on I want to be able to get the value of column "A". This works. The problem occurs when the user moves the column "A" around, such that the order would be "B", "C", "A", "D". I tried this : table.getValueAt(table.getSelectedRow(), table.getColumn("A").getModelIndex()); The problem is that the model index for "A" is ...

8. Autoscroll mechanism in JTable    coderanch.com

I am trying to override the behavior of the autoscroll function in JTable when extending the selection. Currently, it appears as though the autoscroller finds the cell in the table that would be under the mouse, and with each timer cycle, scrolls it to be visible. This gives nice dynamic scrolling speed, if your window is significantly smaller than the screen. ...

9. JTable(URGENT SOS)    coderanch.com





10. JTable    coderanch.com

11. Fonts in JTable    coderanch.com

12. JTable    coderanch.com

13. JTable    coderanch.com

14. JTable.setRowHeight() Bug?    coderanch.com

Hi if row heights of individual rows are adjusted, then the table does not add new rows afterwards. I ve got a simple swing panel here that reproduces the behavior. Hit "add"/"remove rows" buttons, then hit "set row sizes" button and try to add/remove rows again Thanks Eckard ------------ package untitled1; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.table.*; public class ...

15. JTable    coderanch.com

You should have a reference of the frame so that you can access it whereever you need. I guess the frame is the main application frame. So it can be singleton. What I would do in this scenario is... class MyFrame extends JFrame { private static frame MyFrame; private MyFrame () { } public static getFrame() { if (frame == null) ...

16. JTable ........    coderanch.com





17. jtable    coderanch.com

i don't know the language and because i am so far in the gui process, i wouldn't want to go back and redo everything just when it is working right. here's the situation: i have a table with no data in it when the gui comes up. once the user submits a query, the table should then fill up with the ...

18. jtable    coderanch.com

i hava a frame with a refresh button. refresh simply resubmits the current query and updates the table with new info if it is available. well..., my refresh button works, except when i refresh, my columns got to a smaller widht that may be one character long. and if i submit a query the data on the table doesn't change. it ...

19. JTables and JScolPanes    coderanch.com

Hi, I have a JTable with 5 columns. I want to restrict the size of the first 4 columns (done) and have the last one expand to fit the data in it, but I want the viewable area to remain the same and a horizontal scrollbar to appear at the bottom so that I can scroll along to look at the ...

20. JTable    coderanch.com

21. JTable    coderanch.com

22. JTable + Activating EditMode by cursorkeys    coderanch.com

Hello ! Ive got the following problem: I wrote a JTable class, where the editmode of the table should be activated by the cursor up/down keys. To achieve this, I "overloaded" the valueChanged ( ListSelectionEvent le ) method, which is used to manage changements in the selection of the tree. Then I wanted the TextField to get the focus and used ...

23. Jtable as listbox?    coderanch.com

Hi, I am using a jtable to format 3 columns of data, allow you to click on title and sort the whole list by one particular column, and then click on a row to select that row. Here are my questions (thanks ahead of time: 1) Is this a good use for jtable, or should I be using some other 'list ...

24. JTable in a JViewport    coderanch.com

Hi everybody! I have a problem when inserting a new row into the table's model. I want the table to insert new rows at the table's top and display the table's end. This works fine when starting the gui in VisualAge for Java, but when starting the gui from the console (Java 2 Runtime Environment, build 1.3.0_02, mixed mode) the table ...

25. rowcentric JTable    coderanch.com

26. Swing /JTable    coderanch.com

27. Pressing Enter In JTable    coderanch.com

28. JTable    coderanch.com

29. How to make JTable non docable?    coderanch.com

30. JTable Skewed view...    coderanch.com

31. JTable... Urgent!    coderanch.com

32. JTable    coderanch.com

33. About JTable    coderanch.com

34. JTable fireTableStructureChanged    coderanch.com

I'm trying to use JTable overiding the headerRenderer among other things. I'm also hiding and unhiding columns using the setPreferedWidth() etc. based on users selection via radio button. The first time the table is painted all is fine. But when I try to unhide a column by changing the width, then I have a problem. I tried firTableDataChanged() gives me the ...

35. JTable troubles    coderanch.com

36. JTable    coderanch.com

37. JTable functionality    coderanch.com

Here's some code that should help you out... import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; import javax.swing.table.DefaultTableModel; public class TableHandler extends JFrame { private JTable table; public TableHandler() { table = new JTable( new MyTableModel() ); table.addMouseListener( new TableClickHandler() ); JScrollPane sp = new JScrollPane( table ); getContentPane().add( sp, BorderLayout.CENTER ); pack(); setVisible( true ); addWindowListener( new ExitHandler() ); } ...

38. JTable particular info needed    coderanch.com

39. JTable    coderanch.com

40. Why doesn't this JTable work??    coderanch.com

Hi , I have an urgent problem. I'm trying to create a JTable (my first). I'm using the following code, however I keep getting the errors listed below. Can someone please tell me why? import java.awt.*; import javax.swing.*; import java.util.*; import javax.swing.table.AbstractTableModel; public class BitMapDisplay1 extends JPanel { static ISUP isupMessage = null; //private JScrollPane bitMapPane; private JPanel forBitmap; public BitMapDisplay1(ISUP ...

41. JTable...    coderanch.com

Hi!, Thanks ever so much for your reply! I've been trying to get through this problem for a while and it's getting to me now! Because it's my first attempt at a JTable, I was not sure if what I did was right...I thought it was but when I got the errors...oh well! Anyway, I will refer to the site you ...

42. viewing large Jtable    coderanch.com

43. JTable    coderanch.com

44. JTable    coderanch.com

45. columnwidth in JTable    coderanch.com

Hello All, I have table with 3 columns. i want to set the columnwidth to dynamically,based on the screen size. i.e i know what % of the screen size a column will take! Based on these values and based on the screen size i would like to set the values for columnWidth. But my doubt is , for a column which ...

46. JTables    coderanch.com

47. about JTable    coderanch.com

48. JTable    coderanch.com

I have created JTable which reads the data from a File using FileChooser. The only thing which is working for me is that I have to ask user at command prompt to choose the file which has data. Once they choose the file I am able to show the Table in a frame with and a menu i am using the ...

49. JTable switching    coderanch.com

OK, here is the code that I am trying to get to work correctly. Please advise. Thanks! /******* TableTest.java *******/ import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.Graphics; import java.net.*; import java.util.*; import java.io.*; import javax.swing.border.BevelBorder; import javax.swing.event.ListSelectionListener; import javax.swing.event.ListSelectionEvent; import javax.swing.table.*; class TableTest { private JFrame mainframe = null; private JPanel contPanel = null; private JMenuBar menuBar = null; private ...

50. JTable fireTableChanged() calling clearSelection()?    coderanch.com

Hi, I'm working on an application where an asynchronous process is populating a JTable. However, the user can pre-select a row on the table. (Long story) I store the row number for the pre-selected table, and I've defined a listener that will select the row when the table has been populated and does a fireTableChanged(). What I'm seeing, however, is that ...

51. JTable in a JTabbed panel    coderanch.com

52. Is DnD in JTable really impossible? Need good arguments!    coderanch.com

I am doing an application that needs Drag&Drop for reordering within a JTable. It's needs to be done with multiple selection, so the use-case is like this: 1) Select a group of rows, spread out over the table. 2) Within the same table, drag the rows to a new position. The rows are moved to new position. Pretty simple, I should ...

53. JTable    coderanch.com

54. setSelectedItem for JTable    coderanch.com

Hi Chantal and Michael Thanks for helping me out. My problem is solved with setSelectionInterval(index,index) method of ListSelectionInterface. However, chantal as you discussed about the visible range of scrollpane, that problem still persists because i am not able to take the reference of scrollpane in my action performed (because i have made scrollpane as a local method variable, however myTable is ...

55. about JTable    coderanch.com

56. Regarding JTable(Urgent please)    coderanch.com

Hi everybody, In my project I want to show some information in a table which I don't want the user to modify. For this I want to know 2 things : 1)How to populate data in a table dynamically. 2)How to lock the whole table frmo editing. Please reply URGENTLY. Thanking everybody

57. JTable    coderanch.com

Attach listeners to the table and see when events are being fired. You may be adding data to the table, but the table doesn't know it's data is changed. Resizing forces the table to re-validate itself... you can attach listeners and call validate() when the table gets new data in your code...

58. how to create a read-only JTable    coderanch.com

59. JTable in DefaultMutableTreeNode    coderanch.com

60. [URGENT]JTable    coderanch.com

61. JTable addColumns not showing up in table    coderanch.com

I was just going through my notes (I haven't worked with Swing lately) and found that it was more complicated then I thought. I ended up having to create a subclass of AbstractTableModel. This was for a JavaUnzip utility similar to WinZip. Here is the code for the AbstractTableModel class: import javax.swing.table.*; import javax.swing.*; import java.util.*; import javax.swing.JLabel; import java.io.*; import ...

63. Setting DecimalFormat in JTable    coderanch.com

64. jfc/swing/JTable    coderanch.com

There are many simple ways. Here is a utility class that you can use as is or grab ideas from. import javax.swing.*; import javax.swing.border.*; import javax.swing.table.*; import java.awt.*; /** Static utility functions for doing useful things to JTables */ public class JTableUtilities { /** number of pix on each side of icon in a fixed width column header. */ public static ...

65. JTable    coderanch.com

66. JTable    coderanch.com

67. SWING+JTABLE(Urgent Please)    coderanch.com

68. FocusListener on JTables    coderanch.com

69. JTable    coderanch.com

70. About JTable    coderanch.com

Have you ever considered that it might actually be easier to simply combine the header cells from 2 columns into 1 cell. That way you could just leave the rest of your table alone and only the top row(your headers) would have to be special case. That said, since I haven't used JTable directly(I'm using one that comes in a commercial ...

71. JTABLE's valuchanged method?    coderanch.com

I understand, that the value changed method is called only internally by Jtable... so that it can respond when users click on particular rows... so it will changed the display by highlighting on the particular row... Now can i override that method so that in addition to highlighting the particular row, i will do my program -specific task... because that task ...

72. JTable    coderanch.com

73. How do I get the JTable to show @#!$%    coderanch.com

74. JTable    coderanch.com

75. JTable and InputVerifier    coderanch.com

76. JTables again    coderanch.com

77. JTable, reloading the table...    coderanch.com

Update... I'm not sure how to update the table, so I'm just using the setValueAt methods from the TableModel object. Problem is my event code continues to run in a loop because I'm changing the table inside of my tableChanged event. Does anyone know how I can get this to work like I want to? public void tableChanged(TableModelEvent event) { Student ...

78. JTable updation on the run    coderanch.com

79. Combo in JTable    coderanch.com

80. No editting to the JTable    coderanch.com

81. Complex crosstab in JTables    coderanch.com

Is anyone aware of the availability of a component that will allow complex cross tab type data to be displayed **and** interacted with based on a JTable. It is a requirement that complex tables be supported, i.e. the data cells within the table should be able to contain multiple values either horizontally or vertically arranged. Full font formatting is also required. ...

82. JTable    coderanch.com

I am trying to create a Jtable using Vectors. When I compile the code I get the following error. What is the cause of this error? C:\j2sdk1.4.1_04\bin\dev\Table>java SimpleTableDemo Exception in thread "main" java.lang.ClassCastException at javax.swing.table.DefaultTableModel.justifyRows(DefaultTableModel.jav a:238) at javax.swing.table.DefaultTableModel.setDataVector(DefaultTableModel.j ava:194) at javax.swing.table.DefaultTableModel.(DefaultTableModel.java:131 ) at javax.swing.JTable.(JTable.java:392) at SimpleTableDemo.(SimpleTableDemo.java:29) at SimpleTableDemo.main(SimpleTableDemo.java:70) import javax.swing.JTable; import javax.swing.JScrollPane; import javax.swing.JPanel; import javax.swing.JFrame; import java.awt.*; import java.awt.event.*; importjava.util.*; ...

83. jtables[]    coderanch.com

84. Currency in JTable    coderanch.com

85. JTable    coderanch.com

86. JTable    coderanch.com

87. JTable rotate    coderanch.com

88. Frustrating : JTable won't show.    coderanch.com

Hi, I modified my working code to put the table definition in a "sub-class" TableDefinition(), but the table is not displayed anymore that that although it compiles error-free. It's been pretty frustrating the whole day. Any pointers and hints will be much appreciated: import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.JApplet; import javax.swing.JLabel; import java.awt.*; import java.awt.event.*; public class ...

89. JTable    coderanch.com

90. JTable    coderanch.com

91. newbee with JTable    coderanch.com

Sorry to bother the forum with this stupid question, but alas I don't find the answer myself. I have a Jtable with a DefaultTableModel. My application saves the data of the jtable by serialisation. Works well, except that the last entry is often not saved. After I have edited a cell, i have to click on another cell, just to "validate" ...

92. JTable behaviour    coderanch.com

hi all, what i need to achieve is that 1) when i press tab next cell should be selected (which is defaultly handled) 2) as i press a key the caret/blinking cursor should be visible in the cell and 3) i should be able to move my caret/blinking cursor in editing cell with the help of right/left arrow keys how can ...

93. JTable(!!!)    coderanch.com

Hello ! I am new in JAVA PROGRAMMING and I really need your help. PLEASE HELP ME WITH MY PROBLEM. I have two Jtable with two TableModel.My first Table is just like the (ExpenseReport table) that you can find here : http://www.cscc.de/books/swingbook/files/uts2/Chapter18html/Chapter18.htm 18.8 Custom models, editors, and renderers. I have three buttons(Insert, Delete and Copy).I want that user be able to ...

94. JTable emergency!!    coderanch.com

AnalysisPanel () { setLayout(new BorderLayout()); for(int i=0; i<5; i++) { if(GUI.mainGUI.inputPoints.completeBoolean[i]) { noneComplete = false; nDone ++; } } if(noneComplete) { add(new JLabel("no heuristics have been completed"), BorderLayout.CENTER); } else { //tableModel tModel = new tableModel(nDone); //System.out.println("table model created"); createTable(); //table = new JTable(rows, columnTitles); //table.setPreferredScrollableViewportSize(new Dimension(200,200)); //table.setOpaque(true); //JScrollPane scrollPane = new JScrollPane(table); System.out.println("table created"); table = new JTable(rows, column); add(table, ...

95. how to put ImageIcon in JTable    coderanch.com

96. Jtable focuslost    coderanch.com

Hello All, I have a JTable. I then type in the data in the table that I want to update to my database, but on the last textfield in the JTable I have to tab away from it in order for my data to be uploaded properly, if I don't tab away from it I donot get the data that I ...

97. JTable    coderanch.com

Hello All, On the last cell inside my JTable I have to Tab away from that cell in order for that cells data to be counted. Is there a way where I can get all the data from each cell without having to tab away from the last cell? Also when I click into a cell first of all it always ...

98. setBorder not working on JTable ?    coderanch.com

99. why is my JTable not showing up?    coderanch.com

Hello All, Why is my Jtable not showing up? Thanks Ben import java.awt.event.*; import java.awt.*; import javax.swing.*; import java.sql.*; import javax.swing.table.*; public class ComboBoxDemo extends JPanel implements ActionListener { static Connection conn; DatabaseMetaData DMD; JComboBox group = new JComboBox(); JComboBox groupList = new JComboBox(); static JTable tbl1; public ComboBoxDemo() { group.addActionListener(this); try { // Load the database driver Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" ) ...

100. JTable blues    coderanch.com

Hi there, I've got a JTable in which ppl can change some data. Before selecting anything else on the screen I want the data that is changed checked (ppl can change data in the same row without a problem, without checking..). So I added a List Selection Listener to the ListSelectionModel and it works like a charm.. almost.. If a user ...