Embedded Files
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.AbstractTableModel;
public class TableDemoSample extends JFrame
{
private static final int FRAME_WIDTH = 300;
private static final int FRAME_HEIGHT = 200;
private static final int FRAME_X_ORIGIN = 150;
private static final int FRAME_Y_ORIGIN = 250;
private boolean DEBUG = false;
public TableDemoSample()
{
setTitle ("Table Demo Sample");
setSize (FRAME_WIDTH, FRAME_HEIGHT);
setLocation (FRAME_X_ORIGIN, FRAME_Y_ORIGIN);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);
Container contentPane = getContentPane();
contentPane.setBackground(Color.white);
contentPane.setLayout(null);
contentPane.setLayout(new GridLayout(1,0));
JTable table = new JTable(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
JScrollPane scrollPane = new JScrollPane(table);
contentPane.add(scrollPane);
}
class MyTableModel extends AbstractTableModel
{
private String[] columnNames = {"Task",
"Subject",
"Priority",
"Due date",
"Due Time"};
private Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)},
{"Sue", "Black",
"Knitting", new Integer(2), new Boolean(false)},
{"Jane", "White",
"Speed reading", new Integer(20), new Boolean(true)},
{"Joe", "Brown",
"Pool", new Integer(10), new Boolean(false)}
};
public int getColumnCount()
{
return columnNames.length;
}
public int getRowCount()
{
return data.length;
}
public String getColumnName(int col)
{
return columnNames[col];
}
public Object getValueAt(int row, int col)
{
return data[row][col];
}
/*
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
*/
public Class getColumnClass(int c)
{
return getValueAt(0, c).getClass();
}
/*
* Don't need to implement this method unless your table's
* editable.
*/
public boolean isCellEditable(int row, int col)
{
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2)
{
return false;
} else
{
return true;
}
}
/*
* Don't need to implement this method unless your table's
* data can change.
*/
public void setValueAt(Object value, int row, int col)
{
if (DEBUG)
{
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
}
data[row][col] = value;
fireTableCellUpdated(row, col);
if (DEBUG)
{
System.out.println("New value of data:");
printDebugData();
}
}
private void printDebugData()
{
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++)
{
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++)
{
System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
public static void main(String[] args)
{
TableDemoSample td = new TableDemoSample();
td.setVisible(true);
}
}
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