タブ移動のデモ

MoveTabDemo.java

package naoki;

import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;

public class MoveTabDemo {
    public static void main(String[] args) {
        var f1 = new JFrame("ひとつめ");
        f1.setSize(400, 300);
        var t1 = new JTabbedPane();
        f1.add(t1);
        
        var f2 = new JFrame("ふたつめ");
        f2.setSize(400, 300);
        var t2 = new JTabbedPane();
        f2.add(t2);
        
        var p = new JPanel();
        p.setLayout(new BorderLayout());
        p.add(new JTextArea());
        var b = new JButton("移動");
        p.add(BorderLayout.SOUTH, b);
        
        t1.add("移動してない", p);
        b.addActionListener(a -> {
            t2.add("移動した", p);
        });
        
        f1.setVisible(true);
        f2.setVisible(true);
    }
}