がめ１２１６ - プログラム倉庫

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

class game1216 extends JFrame{

  JTextArea area;
  JTextArea disparea;

  public static void main(String args[]){
    game1216 frame = new game1216("タイトル");
    frame.setVisible(true);
  }

  game1216(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 scrollpane1 = new JScrollPane(area);
    scrollpane1.setPreferredSize(new Dimension(120, 120));

    disparea = new JTextArea();
    disparea.setLineWrap(true);
    disparea.setEditable(false);
    disparea.setBackground(Color.LIGHT_GRAY);
    JScrollPane scrollpane2 = new JScrollPane(disparea);
    scrollpane2.setPreferredSize(new Dimension(120, 120));

    JButton button1 = new JButton("全て取得");
    button1.addActionListener(
      new ActionListener(){
        public void actionPerformed(ActionEvent event){
          disparea.setText(area.getText());
        }
      }
    );

    JButton button2 = new JButton("20文字取得");
    button2.addActionListener(
      new ActionListener(){
        public void actionPerformed(ActionEvent event){
          try{
            disparea.setText(area.getText(0, 20));
          }catch(BadLocationException e){
            System.out.println("Bad Location Error!");
          }
        }
      }
    );

    p.add(scrollpane1);
    p.add(scrollpane2);
    p.add(button1);
    p.add(button2);

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