Copy selected text from one text area to another : JTextArea « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTextArea

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Main extends JFrame {
  private JTextArea t1 = new JTextArea("this is a test", 10, 15), t2;

  private JButton copy = new JButton("Copy >>>");

  public Main() {
    Box b = Box.createHorizontalBox();    
    b.add(new JScrollPane(t1));    
    copy.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        t2.setText(t1.getSelectedText());
      }
    });
    b.add(copy);

    t2 = new JTextArea(10, 15);
    t2.setEditable(false);
    b.add(new JScrollPane(t2));

    add(b); 
    setSize(425, 200);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
  public static void main(String args[]) {
    new Main();
  }
}

14.16.JTextArea
	14.16.1.	JTextArea: for multiple-line input.
	14.16.2.	Setting JTextArea Line Wrap and Wrap Style
	14.16.3.	Using JTextArea
	14.16.4.	Set font for I18N to JTextArea
	14.16.5.	Hello in Japanese
	14.16.6.	Using Actions with Text Components: JTextArea
	14.16.7.	Copy selected text from one text area to another
	14.16.8.	Modifying Text in a JTextArea Component
	14.16.9.	Insert some text after the 5th character
	14.16.10.	Append some text to JTextArea
	14.16.11.	Replace the first 3 characters with some text
	14.16.12.	Delete the first 5 characters
	14.16.13.	Enumerating the Lines in a JTextArea Component
	14.16.14.	Setting the Tab Size of a JTextArea Component
	14.16.15.	Moving the Focus with the TAB Key in a JTextArea Component
	14.16.16.	Customizing a JTextArea Look and Feel
	14.16.17.	Highlight of discontinous string
	14.16.18.	Setting text drag in a JTextArea
	14.16.19.	Enumerate the content elements with a ElementIterator