如何在Java中从另一个类中删除jTable列

Question

I'm using a cardlayout, to display list of panels. In one of the panels, i have a JTable with several columns and rows of records. Now, i'd like to remove the first column of the JTable , depending on which user logs in. Below is my code(in the login JFrame ):

//calling the jframe that holds the cardlayout

Home home= new Home();

//calling the panel that holds the jtable

viewRecords b =new viewRecords();

//when a user logs in

//removing the 1st column of the jtable in panel viewRecords

b.jTable1.removeColumn(b.jTable1.getColumnModel().getColumn(0));

//displaying jFrame Home

Home.setVisible(true);

The problem is: it works fine when using a JFrame to display the table, but doesn't work while using JPanel to display the same table. Any idea on how to make this work?

Answer 1

You can remove the column from the view of the table:

public void hideColumn(int modelColumn)
{
    int viewColumn = table.convertColumnIndexToView( modelColumn );

    if (viewColumn != -1)
    {
        TableColumnModel tcm = table.getColumnModel();
        TableColumn column = tcm.getColumn(viewColumn);
        tcm.removeColumn( column );
    }
}

For a fancy implementation of this logic check out the Table Column Manager which allows the user to hide/show columns.

Answer 2

this code hide fisrt column in your jtable

jTable1.getColumnModel().getColumn(0).setMinWidth(0);
jTable1.getColumnModel().getColumn(0).setPreferredWidth(0);
jTable1.getColumnModel().getColumn(0).setMaxWidth(0);