How to set column width in JTable / JXTable?

Question

My application consists of several JTables respectively. JXTables. The goal is to keep the column width and reload them at startup.

But the following code does not change the width of the columns of the tables:

tblTasks.getColumn(1).setWidth(36); 

and also this one does nothing:

 tblTasks.getColumn(1).setPreferredWidth(36); 

Any ideas?

Answer 1

But the following code does not change anything on the width of the table columns:

 tblTasks.getColumn(1).setWidth(36); 

and also this one does nothing:

 tblTasks.getColumn(1).setPreferredWidth(36); 

Any ideas?

.

native constructor JTable.getColumnModel().getColumn(0).setPreferredWidth(36);

eg

 import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Stack; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.WindowConstants; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; public class TableRowHeight { private static final long serialVersionUID = 1L; private JFrame frame = new JFrame("p*s*s*s*s*t*t"); private String[] columnNames = {"one", "two", "Playing with", "four", "five",}; private String[][] data = { {"aaaaaa", "bbbbbb", "cccccc", "dddddd", "eeeeeee",}, {"bbbbbb", "cccccc", "dddddd", "eeeeeee", "aaaaaa",}, {"cccccc", "dddddd", "eeeeeee", "aaaaaa", "bbbbbb",}, {"dddddd", "eeeeeee", "aaaaaa", "bbbbbb", "cccccc",}, {"eeeeeee", "aaaaaa", "bbbbbb", "cccccc", "dddddd",}}; private JTable table = new JTable(new DefaultTableModel(data, columnNames)); private TableColumnModel tcm = table.getColumnModel(); private Stack<TableColumn> colDeleted = new Stack<TableColumn>(); private JButton restoreButton = new JButton("Restore Column Size"); private JButton hideButton = new JButton("Set Column Size to Zero"); private JButton deleteButton = new JButton("Delete Column"); private JButton addButton = new JButton("Restore Column"); public TableRowHeight() { table.setRowMargin(4); table.setRowHeight(30); table.setFont(new Font("SansSerif", Font.BOLD + Font.PLAIN, 20)); JScrollPane scrollPane = new JScrollPane(table); for (int i = 0; i < (tcm.getColumnCount()); i++) { tcm.getColumn(i).setPreferredWidth(150); } table.setPreferredScrollableViewportSize(table.getPreferredSize()); restoreButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { tcm.getColumn(2).setPreferredWidth(100); } }); hideButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { tcm.getColumn(2).setPreferredWidth(000); } }); deleteButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (table.getColumnCount() > 0) { TableColumn colToDelete = table.getColumnModel().getColumn(table.getColumnCount() - 1); table.removeColumn(colToDelete); table.validate(); colDeleted.push(colToDelete); addButton.setEnabled(true); } else { deleteButton.setEnabled(false); } } }); addButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (colDeleted.size() > 0) { table.addColumn(colDeleted.pop()); table.validate(); deleteButton.setEnabled(true); } else { addButton.setEnabled(false); } } }); JPanel btnPanel = new JPanel(); btnPanel.add(hideButton); btnPanel.add(restoreButton); btnPanel.add(deleteButton); btnPanel.add(addButton); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(scrollPane, BorderLayout.CENTER); frame.add(btnPanel, BorderLayout.SOUTH); frame.pack(); frame.setLocation(150, 150); frame.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { TableRowHeight frame = new TableRowHeight(); } }); } } 

Answer 2

 table.getColumn("Column Name").setMaxWidth(36); 

Answer 3

 table.getColumn("Column Name").setMinWidth(36); 

Answer 4

I set a minimum width for the value for each column. For the preferred width of the last column, I choose Integer.MAX_VALUE, which pushes all other columns to their minimum size.

This is a snippet from my project:

 ruleTable.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN); ruleTable.getColumnModel().getColumn(0).setMinWidth(25); ruleTable.getColumnModel().getColumn(1).setMinWidth(125); ruleTable.getColumnModel().getColumn(2).setMinWidth(175); ruleTable.getColumnModel().getColumn(2).setMaxWidth(Integer.MAX_VALUE); 

Hope this helps you and maybe others ... For you, it may be a little late; -P