Swing 예제

import java.awt.Container;
import java.awt.HeadlessException;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;

public class Exam01 extends JFrame{
	JLabel label;
	
	public Exam01() throws HeadlessException {
		label = new JLabel("Hello...Swing", SwingConstants.CENTER);
		Container cont = this.getContentPane();
		cont.add(label);
		
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	public static void main(String[] args) {
		Exam01 ex = new Exam01();
		ex.setSize(300, 400);
		ex.setVisible(true);
	}
}