/* Swingサンプル */

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JScrollPane;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.text.BadLocationException;

class SSample15_1 extends JFrame{

  JTextArea area;
  JTextField text;

  public static void main(String args[]){
    SSample15_1 frame = new SSample15_1("タイトル");
    frame.setVisible(true);
  }

  SSample15_1(String title){
    setTitle(title);
    setBounds(100, 100, 300, 250);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel p = new JPanel();

    area = new JTextArea();
    area.setLineWrap(true);
    JScrollPane scrollpane = new JScrollPane(area);
    scrollpane.setPreferredSize(new Dimension(200, 120));

    p.add(scrollpane);

    JPanel bottomp = new JPanel();

    text = new JTextField(10);

    JButton button = new JButton("置き換え");
    button.addActionListener(
      new ActionListener(){
        public void actionPerformed(ActionEvent event){
          try{
            int start = area.getLineStartOffset(1);
            int end = area.getLineEndOffset(1);
            area.replaceRange(text.getText(), start, end - 1);
          }catch(BadLocationException e){
            System.out.println("Bad Location Error!");
          }
        }
      }
    );

    bottomp.add(text);
    bottomp.add(button);

    Container contentPane = getContentPane();
    contentPane.add(p, BorderLayout.CENTER);
    contentPane.add(bottomp, BorderLayout.SOUTH);
  }
}