public void init() {
// 添加按钮
JPanel buttonPanel = new JPanel();
buttonPanel.add(okButton);
mainPanel.setLayout(new GridLayout(0, 3));
mainWin.add(mainPanel, BorderLayout.CENTER);
JFormattedTextField intField0 =
new JFormattedTextField(
new InternationalFormatter(NumberFormat.getIntegerInstance()) {
protected DocumentFilter getDocumentFilter() {
return new NumberFilter();
}
});
intField0.setValue(100);
addRow("只接受数字的文本框", intField0);
JFormattedTextField intField1 = new JFormattedTextField(NumberFormat.getIntegerInstance());
intField1.setValue(new Integer(100));
// 添加输入校验器
intField1.setInputVerifier(new FormattedTextFieldVerifier());
addRow("带输入校验器的文本框", intField1);
// 创建自定义格式器对象
IPAddressFormatter ipFormatter = new IPAddressFormatter();
ipFormatter.setOverwriteMode(false);
// 以自定义格式器对象创建格式化文本框
JFormattedTextField ipField = new JFormattedTextField(ipFormatter);
ipField.setValue(new byte[] {(byte) 192, (byte) 168, 4, 1});
addRow("IP地址格式", ipField);
mainWin.add(buttonPanel, BorderLayout.SOUTH);
mainWin.pack();
mainWin.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainWin.setVisible(true);
}
public FormatTestFrame() {
JPanel buttonPanel = new JPanel();
okButton = new JButton("Ok");
buttonPanel.add(okButton);
add(buttonPanel, BorderLayout.SOUTH);
mainPanel = new JPanel();
mainPanel.setLayout(new GridLayout(0, 3));
add(mainPanel, BorderLayout.CENTER);
JFormattedTextField intField = new JFormattedTextField(NumberFormat.getIntegerInstance());
intField.setValue(new Integer(100));
addRow("Number:", intField);
JFormattedTextField intField2 = new JFormattedTextField(NumberFormat.getIntegerInstance());
intField2.setValue(new Integer(100));
intField2.setFocusLostBehavior(JFormattedTextField.COMMIT);
addRow("Number (Commit behavior):", intField2);
JFormattedTextField intField3 =
new JFormattedTextField(
new InternationalFormatter(NumberFormat.getIntegerInstance()) {
protected DocumentFilter getDocumentFilter() {
return filter;
}
});
intField3.setValue(new Integer(100));
addRow("Filtered Number", intField3);
JFormattedTextField intField4 = new JFormattedTextField(NumberFormat.getIntegerInstance());
intField4.setValue(new Integer(100));
intField4.setInputVerifier(
new InputVerifier() {
public boolean verify(JComponent component) {
JFormattedTextField field = (JFormattedTextField) component;
return field.isEditValid();
}
});
addRow("Verified Number:", intField4);
JFormattedTextField currencyField = new JFormattedTextField(NumberFormat.getCurrencyInstance());
currencyField.setValue(new Double(10));
addRow("Currency:", currencyField);
JFormattedTextField dateField = new JFormattedTextField(DateFormat.getDateInstance());
dateField.setValue(new Date());
addRow("Date (default):", dateField);
DateFormat format = DateFormat.getDateInstance(DateFormat.SHORT);
format.setLenient(false);
JFormattedTextField dateField2 = new JFormattedTextField(format);
dateField2.setValue(new Date());
addRow("Date (short, not lenient):", dateField2);
try {
DefaultFormatter formatter = new DefaultFormatter();
formatter.setOverwriteMode(false);
JFormattedTextField urlField = new JFormattedTextField(formatter);
urlField.setValue(new URL("http://java.sun.com"));
addRow("URL:", urlField);
} catch (MalformedURLException ex) {
ex.printStackTrace();
}
try {
MaskFormatter formatter = new MaskFormatter("###-##-####");
formatter.setPlaceholderCharacter('0');
JFormattedTextField ssnField = new JFormattedTextField(formatter);
ssnField.setValue("078-05-1120");
addRow("SSN Mask:", ssnField);
} catch (ParseException ex) {
ex.printStackTrace();
}
JFormattedTextField ipField = new JFormattedTextField(new IPAddressFormatter());
ipField.setValue(new byte[] {(byte) 130, 65, 86, 66});
addRow("IP Address:", ipField);
pack();
}
// 当输入组件失去焦点时，该方法被触发
public boolean verify(JComponent component) {
JFormattedTextField field = (JFormattedTextField) component;
// 返回用户输入是否有效
return field.isEditValid();
}