这是我的类(class),用于以正确的方式显示土耳其里拉金额,我的类(class)没有设置输入的金额,例如,如果我输入 1200,它应该是 1,200 里拉,我会错过这里的步骤吗?我应该添加 Action 执行事件还是按键释放事件?
public class TurkisliraFormatterDemo extends JPanel
implements PropertyChangeListener {
private double amount = 100000;
private JFormattedTextField amountField;
private NumberFormat amountDisplayFormat;
private NumberFormat amountEditFormat;
public TurkisliraFormatterDemo() {
super(new BorderLayout());
setUpFormats();
amountField = new JFormattedTextField(
new DefaultFormatterFactory(
new NumberFormatter(amountDisplayFormat),
new NumberFormatter(amountDisplayFormat),
new NumberFormatter(amountEditFormat)));
amountField.setValue(new Double(amount));
amountField.setColumns(10);
amountField.addPropertyChangeListener("value", this);
JPanel fieldPane = new JPanel(new GridLayout(0, 1));
fieldPane.add(amountField);
setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
add(fieldPane, BorderLayout.LINE_END);
}
public void propertyChange(PropertyChangeEvent e) {
Object source = e.getSource();
if (source == amountField) {
amount = ((Number) amountField.getValue()).doubleValue();
amountField.setValue(amount);
}
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("FormatDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TurkisliraFormatterDemo());
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
UIManager.put("windows", Boolean.FALSE);
createAndShowGUI();
}
});
}
private void setUpFormats() {
amountDisplayFormat = NumberFormat.getCurrencyInstance(new Locale("tr", "TR"));
amountDisplayFormat.setMinimumFractionDigits(0);
amountEditFormat = NumberFormat.getNumberInstance();
}
}
最佳答案
该字段在具有焦点时不会被格式化,尝试将另一个组件添加到 UI 并将焦点切换到它。
这意味着在“编辑”模式下,它将使用编辑器格式化程序,但在不使用时将使用显示格式化程序
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.NumberFormat;
import java.util.Locale;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.text.DefaultFormatterFactory;
import javax.swing.text.NumberFormatter;
public class TurkisliraFormatterDemo extends JPanel
implements PropertyChangeListener {
private double amount = 100000;
private JFormattedTextField amountField;
private NumberFormat amountDisplayFormat;
private NumberFormat amountEditFormat;
public TurkisliraFormatterDemo() {
super(new BorderLayout());
setUpFormats();
amountField = new JFormattedTextField(
new DefaultFormatterFactory(
new NumberFormatter(amountDisplayFormat),
new NumberFormatter(amountDisplayFormat),
new NumberFormatter(amountEditFormat)));
amountField.setValue(new Double(amount));
amountField.setColumns(10);
amountField.addPropertyChangeListener("value", this);
JPanel fieldPane = new JPanel(new GridLayout(0, 1));
fieldPane.add(amountField);
setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
add(fieldPane, BorderLayout.LINE_END);
add(new JButton("Hello"), BorderLayout.SOUTH);
}
public void propertyChange(PropertyChangeEvent e) {
Object source = e.getSource();
if (source == amountField) {
amount = ((Number) amountField.getValue()).doubleValue();
System.out.println("amount = " + amount);
// amountField.setValue(amount);
}
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("FormatDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TurkisliraFormatterDemo());
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
UIManager.put("windows", Boolean.FALSE);
createAndShowGUI();
}
});
}
private void setUpFormats() {
amountDisplayFormat = NumberFormat.getCurrencyInstance(new Locale("tr", "TR"));
System.out.println(amountDisplayFormat.format(1200));
amountDisplayFormat.setMinimumFractionDigits(0);
amountEditFormat = NumberFormat.getNumberInstance();
}
}
关于java - 当输入金额和土耳其里拉 "TL"图标丢失时,JFormattedTextField 不设置值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25500167/