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JTable

  Asked By: Sienna    Date: Aug 31    Category: Java    Views: 940
  

I have some questions about JTable:
1- how can set some columns of my table in editable mode and som uneditable?
2- how can I create in some columns controls such as JButton or something like link to a file that these address save to my DB?
3- can I determine # of table rows in run time? for example to number of records that I retrieve? When I create my table rows with Math.random() method in run time, my applet works, but when I set this with my number (by Integer.ParseInt(str)) it compile successfully but nothing appear! (I get the str from servlet that is one number In string format)
can anybody help me!

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4 Answers Found

 
Answer #1    Answered By: Edna West     Answered On: Aug 31

Editing columns
javax.swing.table.DefaultTableModel
Override these methods
boolean isCellEditable(int row,int column);
int getColumnCount();
String getColumnName(int c);


For counting your rows  
javax.swing.JTable
use this method   int getRowCount()

if you want to add any components in to your cell like button or combobox or checkbox
javax.swing.table.TableCellRenderer

override its method

 
Answer #2    Answered By: Guilherme Silva     Answered On: Aug 31

I thanks very much for your complete answer, but I
want to set  my JTable row count. I want some method  like
JTale.setRowCount(variable), because I get my data in stream from
servlet and use in applet, I can't use model. When I use this
variable in :
Object[][] data= new Object[variable][constant]; and create  JTable
my applet  doesn't appear!

 
Answer #3    Answered By: James Evans     Answered On: Aug 31

would you tell me what's wrong with this codes.
i send you 2 files you have to compile  one of them and run  on your browser and tell me what do you want to do exactly.

 
Answer #4    Answered By: Clarence Nichols     Answered On: Aug 31

i have a question about JTable. i use defaultcelleditor to render a
JChechBox editor for a cell. i use this code:
TableColumn sportColumn = table.getColumnModel().getColumn(3);
JCheckBox ok = new JCheckBox();
sportColumn.setCellEditor(new DefaultCellEditor(ok));
i want to retreive this jchechbox value. that means sometimes i want
to know the value of this checkbox is true or false. what should i do?

 
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