Source Code : Wrap textarea

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Wrap textarea

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

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

public class TextAreaFrame extends JFrame implements ActionListener {

  private JButton insertButton = new JButton("Insert");

  private JButton wrapButton = new JButton("Wrap");

  private JButton noWrapButton = new JButton("No wrap");

  private JTextArea textArea = new JTextArea(8, 40);

  private JScrollPane scrollPane = new JScrollPane(textArea);

  public TextAreaFrame() {
    JPanel p = new JPanel();

    p.add(insertButton);
    insertButton.addActionListener(this);

    p.add(wrapButton);
    wrapButton.addActionListener(this);

    p.add(noWrapButton);
    noWrapButton.addActionListener(this);

    getContentPane().add(p, "South");

    getContentPane().add(scrollPane, "Center");

    setTitle("TextAreaTest");
    setSize(300, 300);
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
  }

  public void actionPerformed(ActionEvent evt) {
    Object source = evt.getSource();
    if (source == insertButton)
      textArea
          .append("The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog.");
    else if (source == wrapButton) {
      textArea.setLineWrap(true);
      scrollPane.validate();
    } else if (source == noWrapButton) {
      textArea.setLineWrap(false);
      scrollPane.validate();
    }
  }

  public static void main(String[] args) {
    JFrame f = new TextAreaFrame();
    f.show();
  }

}

           
         
  

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