Java by API/javax.swing.table/TableColumnModel

TableColumnModel: addColumnModelListener(TableColumnModelListener x)

   <source lang="java">

import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.event.ChangeEvent; import javax.swing.event.ListSelectionEvent; import javax.swing.event.TableColumnModelEvent; import javax.swing.event.TableColumnModelListener; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; public class MainClass {

 public static void main(String args[]) {
   Object rows[][] = { { "A", "a" }, { "B", "b" }, { "E", "e" } };
   Object headers[] = { "Upper", "Lower" };
   JFrame frame = new JFrame();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JTable table = new JTable(rows, headers);
   TableColumnModelListener tableColumnModelListener = new TableColumnModelListener() {
     public void columnAdded(TableColumnModelEvent e) {
       System.out.println("Added");
     }
     public void columnMarginChanged(ChangeEvent e) {
       System.out.println("Margin");
     }
     public void columnMoved(TableColumnModelEvent e) {
       System.out.println("Moved");
     }
     public void columnRemoved(TableColumnModelEvent e) {
       System.out.println("Removed");
     }
     public void columnSelectionChanged(ListSelectionEvent e) {
       System.out.println("Selection Changed");
     }
   };
   TableColumnModel columnModel = table.getColumnModel();
   columnModel.addColumnModelListener(tableColumnModelListener);
   columnModel.setColumnMargin(12);
   TableColumn column = new TableColumn(1);
   columnModel.addColumn(column);
   JScrollPane pane = new JScrollPane(table);
   frame.add(pane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

}

      </source>
   
  
 
  

TableColumnModel: addColumn(TableColumn aColumn)

   <source lang="java">

import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.event.ChangeEvent; import javax.swing.event.ListSelectionEvent; import javax.swing.event.TableColumnModelEvent; import javax.swing.event.TableColumnModelListener; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; public class MainClass {

 public static void main(String args[]) {
   Object rows[][] = { { "A", "a" }, { "B", "b" }, { "E", "e" } };
   Object headers[] = { "Upper", "Lower" };
   JFrame frame = new JFrame();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JTable table = new JTable(rows, headers);
   TableColumnModelListener tableColumnModelListener = new TableColumnModelListener() {
     public void columnAdded(TableColumnModelEvent e) {
       System.out.println("Added");
     }
     public void columnMarginChanged(ChangeEvent e) {
       System.out.println("Margin");
     }
     public void columnMoved(TableColumnModelEvent e) {
       System.out.println("Moved");
     }
     public void columnRemoved(TableColumnModelEvent e) {
       System.out.println("Removed");
     }
     public void columnSelectionChanged(ListSelectionEvent e) {
       System.out.println("Selection Changed");
     }
   };
   TableColumnModel columnModel = table.getColumnModel();
   columnModel.addColumnModelListener(tableColumnModelListener);
   columnModel.setColumnMargin(12);
   TableColumn column = new TableColumn(1);
   columnModel.addColumn(column);
   JScrollPane pane = new JScrollPane(table);
   frame.add(pane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

}

      </source>
   
  
 
  

TableColumnModel: getSelectionModel()

   <source lang="java">

import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JCheckBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.ListSelectionModel; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableModel; public class MainClass extends JFrame {

 public MainClass() {
   super("Selection Model Test");
   setSize(450, 350);
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   TableModel tm = new AbstractTableModel() {
     public int getRowCount() {
       return 10;
     }
     public int getColumnCount() {
       return 10;
     }
     public Object getValueAt(int r, int c) {
       return "0";
     }
   };
   final JTable jt = new JTable(tm);
   JScrollPane jsp = new JScrollPane(jt);
   getContentPane().add(jsp, BorderLayout.CENTER);
   JPanel controlPanel, buttonPanel, columnPanel, rowPanel;
   buttonPanel = new JPanel();
   final JCheckBox cellBox, columnBox, rowBox;
   cellBox = new JCheckBox("Cells", jt.getCellSelectionEnabled());
   columnBox = new JCheckBox("Columns", jt.getColumnSelectionAllowed());
   rowBox = new JCheckBox("Rows", jt.getRowSelectionAllowed());
   
   cellBox.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent ae) {
       jt.setCellSelectionEnabled(cellBox.isSelected());
       columnBox.setSelected(jt.getColumnSelectionAllowed());
       rowBox.setSelected(jt.getRowSelectionAllowed());
     }
   });
   columnBox.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent ae) {
       jt.setColumnSelectionAllowed(columnBox.isSelected());
       cellBox.setSelected(jt.getCellSelectionEnabled());
     }
   });
   rowBox.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent ae) {
       jt.setRowSelectionAllowed(rowBox.isSelected());
       cellBox.setSelected(jt.getCellSelectionEnabled());
     }
   });
   buttonPanel.add(new JLabel("Selections allowed:"));
   buttonPanel.add(cellBox);
   buttonPanel.add(columnBox);
   buttonPanel.add(rowBox);
   columnPanel = new JPanel();
   ListSelectionModel csm = jt.getColumnModel().getSelectionModel();
   JLabel columnCounter = new JLabel("Selected Column Indices:");
   csm.addListSelectionListener(new SelectionDebugger(columnCounter, csm));
   columnPanel.add(new JLabel("Selected columns:"));
   columnPanel.add(columnCounter);
   rowPanel = new JPanel();
   ListSelectionModel rsm = jt.getSelectionModel();
   JLabel rowCounter = new JLabel("Selected Row Indices:");
   rsm.addListSelectionListener(new SelectionDebugger(rowCounter, rsm));
   rowPanel.add(new JLabel("Selected rows:"));
   rowPanel.add(rowCounter);
   controlPanel = new JPanel(new GridLayout(0, 1));
   controlPanel.add(buttonPanel);
   controlPanel.add(columnPanel);
   controlPanel.add(rowPanel);
   getContentPane().add(controlPanel, BorderLayout.SOUTH);
 }
 public static void main(String args[]) {
   MainClass se = new MainClass();
   se.setVisible(true);
 }
 public class SelectionDebugger implements ListSelectionListener {
   JLabel debugger;
   ListSelectionModel model;
   public SelectionDebugger(JLabel target, ListSelectionModel lsm) {
     debugger = target;
     model = lsm;
   }
   public void valueChanged(ListSelectionEvent lse) {
     if (!lse.getValueIsAdjusting()) {
       StringBuffer buf = new StringBuffer();
       int[] selection = getSelectedIndices(model.getMinSelectionIndex(), model
           .getMaxSelectionIndex());
       if (selection.length == 0) {
         buf.append("none");
       } else {
         for (int i = 0; i < selection.length - 1; i++) {
           buf.append(selection[i]);
           buf.append(", ");
         }
         buf.append(selection[selection.length - 1]);
       }
       debugger.setText(buf.toString());
     }
   }
   protected int[] getSelectedIndices(int start, int stop) {
     if ((start == -1) || (stop == -1)) {
       return new int[0];
     }
     int guesses[] = new int[stop - start + 1];
     int index = 0;
     for (int i = start; i <= stop; i++) {
       if (model.isSelectedIndex(i)) {
         guesses[index++] = i;
       }
     }
     int realthing[] = new int[index];
     System.arraycopy(guesses, 0, realthing, 0, index);
     return realthing;
   }
 }

}

      </source>