Swing - やするん＠Wiki

すうぃんぐ

簡単な例

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
 
public class SwingSample extends JFrame implements ActionListener {
 
    public static void main(String[] args) {
        SwingSample sample = new SwingSample();
        sample.setBounds(0, 0, 200, 120);
        sample.setVisible(true);
    }
    
    public SwingSample() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JButton button = new JButton("押せ");
        button.setPreferredSize(new Dimension(120, 32));
        button.addActionListener(this);
        
        this.setLayout(new FlowLayout());
        this.add(button);
    }
    
    @Override
    public void actionPerformed(ActionEvent e) {
        JOptionPane.showMessageDialog(this, "押すな。");
    }
}