there are three ways starting with easiest, ending with useless, maybe nonsense in comparing with points 1st and 2nd.
- use
NumberFormat.getCurrencyInstance();
orNumberFormat.getCurrencyInstance(Locale);
forCurrency symbol
, then this value is valid for concreteJTextField
/JFormattedTextField
/JSpinner
/XxxCellRenderer
/XxxCellEditor
,
code
import java.awt.GridLayout;
import java.math.RoundingMode;
import java.text.NumberFormat;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.text.NumberFormatter;
public class MaskFormatterTest {
public static void main(String[] args) throws Exception {
//NumberFormat format = NumberFormat.getNumberInstance();
NumberFormat format = NumberFormat.getCurrencyInstance();
format.setMaximumFractionDigits(2);
format.setMinimumFractionDigits(2);
format.setParseIntegerOnly(true);
format.setRoundingMode(RoundingMode.HALF_UP);
NumberFormatter formatter = new NumberFormatter(format);
formatter.setMaximum(1000.0);
formatter.setMinimum(0.0);
formatter.setAllowsInvalid(false);
formatter.setOverwriteMode(false);
JFormattedTextField tf = new JFormattedTextField(formatter);
tf.setColumns(10);
tf.setValue(123456789.99);
JFormattedTextField tf1 = new JFormattedTextField(formatter);
tf1.setValue(1234567890.99);
JFormattedTextField tf2 = new JFormattedTextField(formatter);
tf2.setValue(1111.1111);
JFormattedTextField tf3 = new JFormattedTextField(formatter);
tf3.setValue(-1111.1111);
JFormattedTextField tf4 = new JFormattedTextField(formatter);
tf4.setValue(-56);
JFrame frame = new JFrame("Test");
frame.setLayout(new GridLayout(5, 0));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(tf);
frame.add(tf1);
frame.add(tf2);
frame.add(tf3);
frame.add(tf4);
frame.pack();
frame.setVisible(true);
}
}
.
- apply own
NavigationFilter
, fixed possition could be on the start or ending for possition (Bias) inJTextField
/JFormattedTextField
/JSpinner
/XxxCellRenderer
/XxxCellEditor
,
code
//@see & read http://stackoverflow.com/questions/7421337/limited-selection-in-a-jtextfield-jtextcomponent
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class NavigationFilterPrefixWithBackspace extends NavigationFilter {
private int prefixLength;
private Action deletePrevious;
public NavigationFilterPrefixWithBackspace(int prefixLength, JTextComponent component) {
this.prefixLength = prefixLength;
deletePrevious = component.getActionMap().get("delete-previous");
component.getActionMap().put("delete-previous", new BackspaceAction());
component.setCaretPosition(prefixLength);
}
@Override
public void setDot(NavigationFilter.FilterBypass fb, int dot, Position.Bias bias) {
fb.setDot(Math.max(dot, prefixLength), bias);
}
@Override
public void moveDot(NavigationFilter.FilterBypass fb, int dot, Position.Bias bias) {
fb.moveDot(Math.max(dot, prefixLength), bias);
}
class BackspaceAction extends AbstractAction {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
JTextComponent component = (JTextComponent) e.getSource();
if (component.getCaretPosition() > prefixLength) {
deletePrevious.actionPerformed(null);
}
}
}
public static void main(String args[]) throws Exception {
JTextField textField = new JTextField("Prefix_", 20);
textField.setNavigationFilter(new NavigationFilterPrefixWithBackspace(7, textField));
JFrame frame = new JFrame("Navigation Filter Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(textField);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
.
- create own
InputMask
withInputVerifier
, workaroung could / couldn't be different for (each of)JTextField
/JFormattedTextField
/JSpinner
/XxxCellRenderer
/XxxCellEditor
,