我可以使用 setValueAt() 更新 TableModel,但在下表中看不到更改是代码:
import javax.swing.JFrame;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Dimension;
import java.awt.GridLayout;
public class TableFTFEditDemo extends JPanel {
private boolean DEBUG = true;
JTable table;
MyTableModel tableModel=new MyTableModel();
public TableFTFEditDemo() {
super(new GridLayout(1,0));
table = new JTable(tableModel);
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Set up stricter input validation for the integer column.
table.setDefaultEditor(Integer.class,
new IntegerEditor(0, 100));
//If we didn't want this editor to be used for other
//Integer columns, we'd do this:
//table.getColumnModel().getColumn(3).setCellEditor(
// new IntegerEditor(0, 100));
//Add the scroll pane to this panel.
add(scrollPane);
}
class MyTableModel extends AbstractTableModel {
private String[] columnNames ;
private Object[][] data;
MyTableModel(){
columnNames=new String[] {"First Name","Last Name","Sport","# of Seaters","Vegetarian","blank"};
data=new Object[][] {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false),"sdf"},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true),"reytry"},
{"Sue", "Black",
"Knitting", new Integer(2), new Boolean(false),"wwttu"},
{"Jane", "White",
"Speed reading", new Integer(20), new Boolean(true),"yuiyio"},
{"Joe", "Brown",
"Pool", new Integer(10), new Boolean(false),"ertey"}
};
}
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();
}
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;
}
}
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;
this.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("--------------------------");
}
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("TableFTFEditDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TableFTFEditDemo newContentPane = new TableFTFEditDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
void runtable(){
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
tableModel.setValueAt(new Integer(5),2,5);
((AbstractTableModel)table.getModel()).fireTableCellUpdated(2,5);
}
});
}
/** using this to call setValueAt from other classes*/
public void setValueAt1(Object value, int row, int col) {
table.setValueAt(new Integer(5),row,col);
((AbstractTableModel)table.getModel()).fireTableCellUpdated(row,col);
}
}
PS:代码取自oracle'示例..我只想知道如何在表格中反映tablemodel中所做的更改。