我正在开发一个需要使用 jtable 来接受数据库输入的项目。
我想为 jtable 中的单元格设置事件侦听器，关于使用什么事件让我知道的任何建议当用户完成编辑单元格时，我可以保存单元格的内容并允许用户移动到下一个细胞，
我有这个代码，但它没有按我的意愿工作，请你帮我调查一下并告诉我哪里出错了
DefaultTableModel tablemodel;
/**
* Creates new form Tabletest
*/
public Tabletest(java.awt.Frame parent, boolean modal) {
super(parent, modal);
initComponents();
SetTable();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
));
jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTable1MouseClicked(evt);
}
});
jTable1.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
jTable1KeyPressed(evt);
}
});
jScrollPane1.setViewportView(jTable1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(38, 38, 38)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 190, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(72, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jTable1KeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
jTable1.getColumn(jTable1.getColumnName(jTable1.getSelectedColumn())).setCellEditor(new tablecell2()); // TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the dialog */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
Tabletest dialog = new Tabletest(new javax.swing.JFrame(), true);
dialog.addWindowListener(new java.awt.event.WindowAdapter() {
@Override
public void windowClosing(java.awt.event.WindowEvent e) {
System.exit(0);
}
});
dialog.setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
// End of variables declaration
void SetTable(){
try {
tablemodel= new DefaultTableModel();
tablemodel.addColumn("field1");
tablemodel.addColumn("field2");
tablemodel.addColumn("field3");
tablemodel.addColumn("field4");
Object[] a = {"10","20","30","40"};
Object[] b = {"100","200","300","400"};
tablemodel.addRow(a);
tablemodel.addRow(b);
jTable1.setModel(tablemodel);
} catch (Exception e) {
}
}
void saveresult() {
double tot = Double.parseDouble(jTable1.getValueAt(jTable1.getSelectedRow(), jTable1.getSelectedColumn()).toString());
JOptionPane.showMessageDialog(rootPane, tot+ " the value will be save into db");
}
class tablecell2 extends JTextField implements TableCellEditor {
int tablecell2_column;
Object value;
@Override
public Component getTableCellEditorComponent(JTable table, final Object value, boolean isSelected, int row, int column) {
this.stopCellEditing();
this.tablecell2_column = column;
this.value = value;
//this.setFont(null);
System.out.println(">>tablecell2>>");
if (value != null) {
setText(value.toString());
}
this.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
jTextField1FocusLost(evt);
}
private void jTextField1FocusLost(FocusEvent evt) {
//setText(value.toString());
// new setResults().getbyclass(jTable1, ClassCombo.getSelectedItem().toString(), acadYr, term, subjectCombo.getSelectedItem().toString());
//JOptionPane.showMessageDialog(currentCell, "focus");
}
});
this.setPreferredSize(new java.awt.Dimension(15, 20));
this.setFont(new java.awt.Font("", 10, 9));
//this.setFont(new java.awt.Font);
/* this.addFocusListener(null);addFocusListener(new java.awt.event.FocusAdapter() {
@Override
public void focusLost(java.awt.event.FocusEvent evt) {
jTable1FocusLost(evt);
}
});*/
this.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextFieldMouseClicked(evt);
}
private void jTextFieldMouseClicked(MouseEvent evt) {
setText("");
}
});
this.addKeyListener(new java.awt.event.KeyAdapter() {
@Override
public void keyPressed(java.awt.event.KeyEvent evt) {
jTextField10KeyPressed(evt);
}
});
return this;
}
@Override
public Object getCellEditorValue() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public boolean isCellEditable(EventObject anEvent) {
return true;
}
@Override
public boolean shouldSelectCell(EventObject anEvent) {
return true;
}
@Override
public boolean stopCellEditing() {
return true;
}
@Override
public void cancelCellEditing() {
}
@Override
public void addCellEditorListener(CellEditorListener l) {
}
@Override
public void removeCellEditorListener(CellEditorListener l) {
}
private void jTable1FocusLost(java.awt.event.FocusEvent evt) {
JOptionPane.showMessageDialog(this, "666");
}
private void jTextField10KeyPressed(java.awt.event.KeyEvent evt) {
int keycode = evt.getKeyCode();
StringBuffer sb = new StringBuffer();
sb.append("" + evt.getKeyChar());
//jTextField10.setText(sb.toString());
System.out.println("key code " + keycode);
if (keycode == 10) {
setText(this.getText());
if (tablecell2_column == 3) {
//Scores.CA_SCORE = Double.parseDouble(this.getText());
} else if (tablecell2_column == 4) {
//Scores.EXAM_SCORE = Double.parseDouble(this.getText());
}
//jTextField10.setText("");
sb.delete(0, sb.length());
//JOptionPane.showMessageDialog(currentCell, Scores.CA_SCORE);
saveresult();
this.nextFocus();
//new setResults().getbyclass(jTable1, ClassCombo.getSelectedItem().toString(), acadYr, term, subjectCombo.getSelectedItem().toString());
} // TODO add your handling code here:
}
}
}