Sample Sorting Table Model : JTable Model « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTable Model

import java.awt.BorderLayout;
import java.awt.GridLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

class SampleSortingTableModel extends AbstractTableModel implements TableModelListener {
  protected TableModel base;

  protected int sortColumn;

  protected int[] row;

  public SampleSortingTableModel(TableModel tm, int sortColumn) {
    this.base = tm;
    this.sortColumn = sortColumn;
    tm.addTableModelListener(this);
    rebuild();
  }

  public Class getColumnClass(int c) {
    return base.getColumnClass(c);
  }

  public int getColumnCount() {
    return base.getColumnCount();
  }

  public String getColumnName(int c) {
    return base.getColumnName(c);
  }

  public int getRowCount() {
    return base.getRowCount();
  }

  public Object getValueAt(int r, int c) {
    return base.getValueAt(row[r], c);
  }

  public boolean isCellEditable(int r, int c) {
    return base.isCellEditable(row[r], c);
  }

  public void setValueAt(Object value, int r, int c) {
    base.setValueAt(value, row[r], c); // Notification will cause re-sort
  }

  public void tableChanged(TableModelEvent event) {
    rebuild();
  }

  protected void rebuild() {
    int size = base.getRowCount();
    row = new int[size];
    for (int i = 0; i < size; i++) {
      row[i] = i;
    }
    sort();
  }

  protected void sort() { // Sort and notify listeners
    for (int i = 1; i < row.length; i++) {
      int j = i;
      while (j > 0 && compare(j - 1, j) > 0) {
        int temp = row[j];
        row[j] = row[j - 1];
        row[j - 1] = temp;
        j--;
      }
    }
    fireTableStructureChanged();
  }

  protected int compare(int i, int j) {
    String s1 = base.getValueAt(row[i], sortColumn).toString();
    String s2 = base.getValueAt(row[j], sortColumn).toString();
    return s1.compareTo(s2);
  }
}

public class SortableTableModelAbstractTableModel extends JFrame {
  DefaultTableModel model = new DefaultTableModel(new Object[][] { { "this", "1" },
      { "text", "2" }, { "will", "3" }, { "be", "4" }, { "sorted", "5" } }, new Object[] {
      "Column 1", "Column 2" });

  public SortableTableModelAbstractTableModel() {
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JTable tableOrig = new JTable(model);
    tableOrig.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    JTable tableSorted = new JTable(new SampleSortingTableModel(model, 0));
    tableSorted.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    JPanel panel = new JPanel(new GridLayout(1, 2));
    panel.add(new JScrollPane(tableOrig));
    panel.add(new JScrollPane(tableSorted));
    getContentPane().add(panel, BorderLayout.CENTER);
    pack();
  }

  public static void main(String arg[]) {
    new SortableTableModelAbstractTableModel().setVisible(true);
  }
}

14.59.JTable Model
	14.59.1.	Create DefaultTableModel
	14.59.2.	Creating simple JTable using AbstractTableModel
	14.59.3.	Extending AbstractTableModel
	14.59.4.	Creates tables that allow rows and columns to be added or deleted
	14.59.5.	Set table value
	14.59.6.	Add logic to get value method
	14.59.7.	Subclass AbstractTableModel to reuse an existing data structure: Treat an array as an AbstractTableModel
	14.59.8.	Sparsely Populated Table Model
	14.59.9.	Listening to JTable Events with a TableColumnModelListener
	14.59.10.	The Calendar program.
	14.59.11.	Sample Sorting Table Model
	14.59.12.	Add columns to a table through DefaultTableModel
	14.59.13.	Insert a row to a table through DefaultTableModel
	14.59.14.	Insert a row to a table through DefaultTableModel at specified row
	14.59.15.	Append a row to a table through DefaultTableModel at specified row
	14.59.16.	Remove the first row from a table with DefaultTableModel
	14.59.17.	Remove the last row from a table with DefaultTableModel
	14.59.18.	Move the first row to the end of the table
	14.59.19.	Move the first two rows to the end of the table
	14.59.20.	Move the last two rows to the start of the table
	14.59.21.	Move the last row to the beginning of the table
	14.59.22.	Get all the table data from DefaultTableModel
	14.59.23.	Copy (clone) the data from the second row
	14.59.24.	Overwrite the date from the first row with DefaultTableModel
	14.59.25.	Add rows to a Table
	14.59.26.	Sharing a Table Model Between JTable Components
	14.59.27.	Disabling User Edits in a JTable with DefaultTableModel
	14.59.28.	Appending a Row to a JTable Component
	14.59.29.	Copy data from a table to a list
	14.59.30.	Map TableModel
	14.59.31.	Bean Property Table Model