Complet details of jtable and renderer

Hello user based on my search on JTable i am posting this thread, If any correction in this post please reply.
JTable is one of the difficult component in swings.

Creating a JTable


JTable jt=new JTable();

The above create code create jtable.
Adding ScrollPane to table


JScrollPane jsb=new JScrollPane(jt);

Creating a Default Table Model



DefaultTableModel dt=new DefaultTableModel( new Object[][] , new Object[] {" Column Name1 ", ".....", "Column nth name"});
jt.setModel(dt);


Setting Number of rows


we cant set no.of rows to using jtable.

First get the table model and set number of rows

jt.getModel().setRowCount(n); //n is any integer
these are the simple task on jtable.




Add a component to jtable column model



For add a component to jtable column we should use ediotors/ renders

i am explaining using jcombobox.

first get the column model

TableColumnModel tcm=JTable.getColumnModel();

Then use Editor

tcm.getColumn(nth column).setCellEditor(new DefaultCellEditor(jcombobox));


in the similar way we can add diffrent components in jtable column.

The above procuder will create a jcombobox in nth column in every row of nth column.
if we need to add diffrent components in single column in diffrent rows use cell render.

On first glance, this appears wrong:

Code:

---

//Adding ScrollPane to table
JScrollPane jsb=new JScrollPane();
jsb.add(jt);

---

Better:

Code:

---

//Adding ScrollPane to table
JScrollPane jsb=new JScrollPane(jt);
//jsb.add(jt);

---

or

Code:

---

//Adding ScrollPane to table
JScrollPane jsb=new JScrollPane();
jsb.getViewport.add(jt);

---

The JScrollPane tutorial and API will explain all this.


So, rather than have us grunge through your other bits of code and such, why not tell us exactly where you're having problems.