import java.awt.Dimension;

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

public class Test {
	public static void main(final String... args) {
		final JFrame f = new JFrame("test");
		f.add(new JLabel("您好"));
		f.setSize(new Dimension(400, 300));
		f.setLocationRelativeTo(null);
		f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		f.setVisible(true);
	}
}