[英]Applying a MaskFormatter to a column in my JTable, but the mask is only used on the first cell I edit in the column
////DOB column formats to dd/mm/yy
TableColumn dobColumn = table.getColumnModel().getColumn(3);
DateFormat df = new SimpleDateFormat("dd/mm/yy");
JFormattedTextField tf = new JFormattedTextField(df);
tf.setColumns(8);
try {
MaskFormatter dobMask = new MaskFormatter("##/##/##");
dobMask.setPlaceholderCharacter('0');
dobMask.install(tf);
} catch (ParseException ex) {
Logger.getLogger(DisplayStudents.class.getName()).log(Level.SEVERE, null, ex);
}
dobColumn.setCellEditor(new DefaultCellEditor(tf));
我已經按照類似的過程將列中的單元格轉換為ComboBoxes或CheckBoxes,並且這些列中的所有單元格都已設置為ComoboBoxes / CheckBoxes,但是當我將DOB列的單元格編輯器設置為帶有掩碼的JFormattedTextField時,遮罩僅應用於我在該列中單擊的第一個單元格。
編輯:這是我的SSCCE:
public class TableExample extends JFrame {
public TableExample() {
add(makeTable());
}
private JTable makeTable() {
Object[][] tableData = {{"","a","b",""}, {"","c","d",""}};
String[] columns = {"comboBox column", "column2", "column3", "dobColumn"};
JTable table = new JTable(tableData, columns);
////turn into a combo box
TableColumn comboColumn = table.getColumnModel().getColumn(0);
JComboBox<String> comboBox = new JComboBox<String>();
comboBox.addItem("1st");comboBox.addItem("2nd");
comboColumn.setCellEditor(new DefaultCellEditor(comboBox));
////DOB column formats to dd/mm/yy
TableColumn dobColumn = table.getColumnModel().getColumn(3);
DateFormat df = new SimpleDateFormat("dd/mm/yy");
JFormattedTextField tf = new JFormattedTextField(df);
tf.setColumns(8);
try {
MaskFormatter dobMask = new MaskFormatter("##/##/##");
dobMask.setPlaceholderCharacter('0');
dobMask.install(tf);
} catch (ParseException ex) {
Logger.getLogger(TableExample.class.getName()).log(Level.SEVERE, null, ex);
}
dobColumn.setCellEditor(new DefaultCellEditor(tf));
return table;
}
public static void main(String[] args) {
JFrame frame = new TableExample();
frame.setSize( 300, 300 );
frame.setVisible(true);
}
}
我仍然不確定為什么每次單擊dobColumn內的單元格都會破壞Mask。 因此,我決定實現tableChange方法,以便在dobColumn中發生更改時重新創建掩碼。
public void tableChanged(TableEvent e) {
if(e.getColumn() == 3) { //if column edited was the dobColumn
System.out.println("Remaking mask");
JFormattedTextField tf = new JFormattedTextField();
try {
MaskFormatter dobMask = new MaskFormatter("##-##-##");
dobMask.setPlaceholderCharacter('0');
dobMask.install(tf);
} catch (ParseException ex) {
Logger.getLogger(DisplayStudents.class.getName()).log(Level.SEVERE, null, ex);
}
table.getColumnModel().getColumn(3).setCellEditor(new DefaultCellEditor(tf));
}
}
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