スクリーンキーボードの作成

import java.awt.Container;

import java.awt.FlowLayout;

import java.awt.HeadlessException;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextField;



public class Main extends JFrame {



    private JButton a_BT;

    private JTextField textField;

    

    public Main() throws HeadlessException {

        super();

        

        Container container = this.getContentPane();

        

        container.setLayout( new FlowLayout() );

        

        a_BT = new JButton( "A" );

        textField = new JTextField( 10 );

        

        container.add( a_BT );

        container.add( textField );

        

        a_BT.addActionListener( new MyButtonListener() );

        

        pack();

    }



    class MyButtonListener implements ActionListener {

        

        public void actionPerformed( ActionEvent e ) {

            // TODO 自動生成されたメソッド・スタブ

            String text = textField.getText();

            text += ( ( JButton )e.getSource() ).getText();

            textField.setText( text );

        }



    }

    

    public static void main( String[] args ) {

        Main app = new Main();

        app.setVisible( true );

    }



}