/* Swingサンプル */ 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 SSample11_1 extends JFrame{ JTextArea area; JTextArea disparea; public static void main(String args[]){ SSample11_1 frame = new SSample11_1("タイトル"); frame.setVisible(true); } SSample11_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 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); } }