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首頁javajformattedtextfieldJava Swing - 如何鏈接兩個JFormattedTextField的值

Java Swing - 如何鏈接兩個JFormattedTextField的值

我們想知道如何鏈接兩個JFormattedTextField的值。
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
public class Main {
public static void main(String[] args) {
JPanel mainPanel = new JPanel();
JTextField field = new JTextField(20);
JTextField field1 = new JTextField(20);
field.getDocument().addDocumentListener(new DocumentListener() {
@Override
public void changedUpdate(DocumentEvent e) {
updateLabel(e);
}
@Override
public void insertUpdate(DocumentEvent e) {
updateLabel(e);
}
@Override
public void removeUpdate(DocumentEvent e) {
updateLabel(e);
}
private void updateLabel(DocumentEvent e) {
field1.setText(field.getText());
}
});
 
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