1
我有一個場景，在jTable中選擇顏色的jComboBox用所選顏色的名稱更改jTable的同一行中的另一個字段。如何根據jTable中jComboBox的選擇更新相鄰字段？
當JComboBox可相應地選擇的相鄰場的變化，但是當我點擊另一個JComboBox中而不是改變在相鄰場的它改變之前選擇的行。
這是我到目前爲止的代碼：
import javax.swing.DefaultCellEditor;
import javax.swing.table.*;
public class TestJTable extends javax.swing.JFrame {
public TestJTable() {
initComponents();
String[] columnNames = {"Choose Colour", "Colour Chosen"};
Object[][] data =
{
{"Red", new String("Red Colour")},
{"Blue", new String("Blue Colour")},
{"Green", new String("Green Colour")},
{"Yellow", new String("Yellow Colour")}
};
DefaultTableModel model = new DefaultTableModel(data, columnNames);
jTable.setModel(model);
jTable.getColumnModel().getColumn(0).setCellEditor(new DefaultCellEditor(jCBColour));
}
/**
* 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() {
jCBColour = new javax.swing.JComboBox();
jScrollPane1 = new javax.swing.JScrollPane();
jTable = new javax.swing.JTable();
jCBColour.setEditable(true);
jCBColour.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Red", "Blue", "Green", "Yellow" }));
jCBColour.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCBColourActionPerformed(evt);
}
});
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null},
{null, null},
{null, null},
{null, null}
},
new String [] {
"Choose Colour", "Colour Chosen"
}
));
jScrollPane1.setViewportView(jTable);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(89, 89, 89)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 452, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(113, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(14, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(178, 178, 178))
);
pack();
}// </editor-fold>
private void jCBColourActionPerformed(java.awt.event.ActionEvent evt) {
System.out.println(evt.getActionCommand());
System.out.println(jCBColour.getSelectedIndex());
if (jCBColour.getSelectedIndex() != -1) {
switch (jCBColour.getSelectedIndex()){
case 0: jTable.setValueAt("Red Colour", jTable.getSelectedRow(), 1);
break;
case 1: jTable.setValueAt("Blue Colour", jTable.getSelectedRow(), 1);
break;
case 2: jTable.setValueAt("Green Colour", jTable.getSelectedRow(), 1);
break;
case 3: jTable.setValueAt("Yellow Colour", jTable.getSelectedRow(), 1);
break;
default:
break;
}
}
}
/**
* @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(TestJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(TestJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(TestJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(TestJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new TestJTable().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JComboBox jCBColour;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable;
// End of variables declaration
}
任何幫助，將不勝感激:)